{"title":"Explore Scientific","description":"Founded by Scott W. Roberts in 2008, Explore Scientific has grown to include a wide range of telescopes both refractors and reflectors, innovative wide angle waterproof eyepieces, mounts and sport optics.","products":[{"product_id":"explore-scientific-es80-80mm-f-6-ed-essential-series-fcd-1-ed-apo-triplet-refractor","title":"Explore Scientific ES80 80mm f\/6 ED \"Essential Series\" FCD-1 ED APO Triplet Refractor","description":"\u003cp\u003eThis 80mm Explore Scientific \"Essential Series\" ED triplet apochromatic refractor is loaded with features and is priced hundreds of dollars less than many competitive 80mm triplet scopes - and even less than many competitive doublets . . .\u003c\/p\u003e\n\u003cdiv class=\"heading\"\u003e\u003cstrong\u003eThis Explore Scientific ES80 \"Essential Series\" refractor has:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"heading\"\u003e\n\u003cul\u003e\n\u003cli\u003e80mm f\/6 fully multicoated triplet optics using a Hoya FCD-1 FPL51-equivalent ED element\u003c\/li\u003e\n\u003cli\u003eDual-speed 2\" Crayford focuser with 10:1 ratio fine focusing\u003c\/li\u003e\n\u003cli\u003e2\" dielectric star diagonal with 2\" and 1.25\" brass compression ring eyepiece holders\u003c\/li\u003e\n\u003cli\u003eVixen-style dovetail mounting foot\u003c\/li\u003e\n\u003cli\u003ePre-mounted base for finderscope (finder not included)\u003c\/li\u003e\n\u003cli\u003eExtended lifetime warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003eThe Explore Scientific ES80 \"Essential Series\" refractor uses a premium Hoya FCD-1 ED glass element and state-of-the-art optical multicoatings in its apochromatic air-spaced ED triplet optics. The result is images that are essentially free of the annoying halo of unfocused violet light (chromatic aberration) that mars the view of bright stars and solar system objects in lesser scopes, despite the fast focal ratio of the ES80, and even at very high magnifications.\u003c\/p\u003e\n\u003cp\u003eAt only 5.95 lbs, the Explore Scientific ES80 is a natural as a lightweight grab-and-go scope for spur-of-the-moment backyard astronomy. It also makes a top-notch travel scope to take across town or around the world. In addition, it's a nifty fast focal ratio astrograph to piggyback on a larger scope for serious wide field imaging, or you can even use it on a big altazimuth or equatorial mount as the heart of your observing system.\u003c\/p\u003e\n\u003cp\u003eConsidering its surprisingly low price for an apochromatic triplet, and in view of the great optical performance that comes as standard equipment, the 80mm Explore Scientific ES80 is a terrific buy!\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures of this telescope . . .\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAir-spaced ED apochromatic triplet refractor optics:\u003c\/strong\u003e 80mm (3.1\") aperture, 480mm focal length, f\/6 focal ratio three-lens air-spaced optical system. The optics use a center lens element of Hoya FCD1 (Dense Fluor Crown) glass, the Hoya equivalent of FPL-51 ED (Extra-low Dispersion) glass. This ED element produces superior sharpness and color correction by minimizing the chromatic aberration, the \"false\" color fringing seen around bright objects when light rays pass through standard crown-and-flint doublet objectives. The result is to reduce spurious color halos and fringing to vanishingly low levels.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFully multicoated optics:\u003c\/strong\u003e The ES80 triplet objective lens has EMD™ (Enhanced Multilayer Deposition) antireflection multicoatings on all air-to-glass surfaces for high light transmission, minimal light scatter, and excellent contrast.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInternal light baffles:\u003c\/strong\u003e The aluminum tube has contrast-enhancing internal light baffles and a specially darkened tube interior to provide dark sky backgrounds and high terrestrial contrast.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCollimatable optics:\u003c\/strong\u003e One of the bonuses of owning a refractor is that, compared to standard reflector telescopes, they almost never require realigning of the optics (collimation). However, any air-spaced refractor telescope may require optical recentering if the lens elements are knocked out of alignment by a heavy blow during shipping or use. Removing the dew shield will give you access to the lens centering screws in the sides of the lens cell, which you can then adjust yourself by referring to the supplied instructions. You can also send your scope to Explore Scientific's Service Center for precision alignment. A standard service charge applies for factory realignment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDew shield:\u003c\/strong\u003e The supplied removable dew shield slows the formation of dew on the lens in cold weather to extend your undisturbed observing time. It also improves the contrast, similar to the effect of the lens shade on a camera lens, when observing during the day or when there is excessive ambient light at night, such as a neighbor's backyard security light. A single thumbscrew holds the dew shield in place, allowing the felt-lined dew shield to be removed from the scope, reversed, slid back onto the optical tube, and stored for transport in only a few seconds. The optical tube measures a compact 18.5\" long, including the dew shield. A thread-in metal dust cap for the optical tube is standard.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual speed 2\" rack and pinion focuser:\u003c\/strong\u003e The precision-made no-backlash focuser has dual-speed focusing. There are two coarse focusing knobs. The right knob also has a smaller concentric knob with a 10:1 reduction gear microfine focusing ratio. This provides exceptionally precise image control during high magnification visual observing and critical DSLR or CCD imaging. The large focus knobs have ribbed gripping surfaces so they are easy to operate, even while wearing gloves or mittens in cold weather.\u003c\/p\u003e\n\u003cp\u003eThe focuser drawtube has a scale marked in centimeters and 1mm increments. This lets you note individual focuser positions for easy return to the correct focus when switching between visual use and photography. Two knobs underneath the focuser lets you adjust the tension on the drawtube to accommodate varying eyepiece\/photo accessory loads, as well as firmly lock in a photographic focus. The focuser has a non-marring 2\" brass compression ring equipment holder.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2\" dielectric star diagonal and compression ring eyepiece holders:\u003c\/strong\u003e The supplied standard equipment 2\" mirror star diagonal of the ES80CF slips into the focuser drawtube's 2\" eyepiece\/accessory holder. The 2\" diagonal has 99% reflectivity dielectric mirror coatings for high light transmission. The star diagonal uses a non-marring soft brass compression ring to hold 2\" eyepieces in place. The compression ring won't scratch the barrel of your 2\" eyepieces as an ordinary thumbscrew can.\u003c\/p\u003e\n\u003cp\u003eA supplied 1.25\" accessory adapter slips into the 2\" diagonal to let you use 1.25\" eyepieces in the 2\" diagonal. The 1.25\" accessory adapter can also be inserted into the 2\" accessory holder on the focuser drawtube to let you use a 1.25\" image erecting diagonal, or 1.25\" photographic accessories. Like the 2\" eyepiece holder on the diagonal, the 1.25\" adapter also uses a non-marring soft brass compression ring to hold 1.25\" star diagonals and accessories in place.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMounting foot:\u003c\/strong\u003e For serious astronomy and astrophotography, the ES80 has an L-shaped dovetail mounting foot that is shaped to fit directly into the Vixen-style dovetail slot on the head of many of the most popular light to medium capacity altazimuth mounts and Celestron VX Series go-to German equatorials, among others. In addition, the dovetail has both 1\/4\"-20 and 3\/8\" holes that allow you to mount the 7.5 pound scope (when including diagonal) directly onto any good photo tripod for casual astronomy or daytime terrestrial observing. A knob on the body of the scope allows you to rotate the tube assembly and focuser to line up a camera in either a landscape or portrait orientation (or any orientation in between), then temporarily lock the focuser in that position.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eExtended lifetime warranty:\u003c\/strong\u003e This individually serial numbered Explore Scientific telescope is backed by a limited one year warranty, which will be extended to an Explore Scientific transferable Extended Life of the Product limited warranty when its warranty card is registered with Explore Scientific within 60 days of purchase.\u003c\/p\u003e\n\u003ch2\u003eTech Details: \u003c\/h2\u003e\n\u003ctable class=\"table\" id=\"product-attribute-specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eAperture\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e3.1\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBinary and Star Cluster Observation\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eVery Good\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Length\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e480mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Ratio\u003c\/th\u003e\n\u003ctd class=\"data\"\u003ef\/6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGalaxy and Nebula Observation\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eFair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHighest Useful Magnification\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e160x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLunar Observation\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eGreat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e7.5 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePlanetary Observation\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eVery Good\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eResolution\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1.45 arc seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTelescope Type\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eRefractor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eVisual Limiting Magnitude\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e12.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1 year, extendable to lifetime\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003eSupplied Accessories: \u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eVixen-style dovetail mount\u003c\/li\u003e\n\u003cli\u003eRotating 2\" dual speed rack and pinion focuser\u003c\/li\u003e\n\u003cli\u003eMounting shoe for optional finderscope\u003c\/li\u003e\n\u003cli\u003eDust covers.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40221666934857,"sku":"ES80B","price":699.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/files\/DSC09061_1390x1390_acc879c8-1beb-4165-85a7-b582ecff1f79.webp?v=1722357401"},{"product_id":"explore-scientific-es127-127mm-f-7-5-essential-series-fcd-1-ed-triplet-refractor","title":"Explore Scientific ES127 127mm f\/7.5 \"Essential Series\" FCD-1 ED Triplet Refractor","description":"\u003cp\u003eThis big 127mm (5\") Explore Scientific \u003cem\u003eEssential Series\u003c\/em\u003e air-spaced ED triplet apochromatic refractor is loaded with quality optical performance at a surprisingly reasonable price for a scope of its size and optical quality . . .\u003c\/p\u003e\n\u003cdiv class=\"heading\"\u003e\u003cstrong\u003eThis 5\" Explore Scientific ES127 \"Essential Series\" apochromatic refractor has:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"heading\"\u003e\n\u003cul\u003e\n\u003cli\u003e127mm f\/7.5 fully multicoated triplet optics using a Hoya FPL51-equivalent ED element\u003c\/li\u003e\n\u003cli\u003eDual-speed 2\" rack and pinion focuser with 10:1 ratio fine focusing\u003c\/li\u003e\n\u003cli\u003eMounting rings with dovetail for use on a Vixen-style altazimuth or German equatorial mount\u003c\/li\u003e\n\u003cli\u003eFinderscope base installed on OTA\u003c\/li\u003e\n\u003cli\u003eExtended product lifetime warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003eWith a 5\" (127mm) aperture, this Explore Scientific \"Essentials Series\" ES127 ED triplet refractor gathers 55% more light (with nearly 25% higher resolution) than the more common size 102mm (4\") doublet and triplet refractors that often cost nearly as much as the ES127.\u003c\/p\u003e\n\u003cp\u003eThe Explore Scientific ES127 uses a premium Hoya ED glass element and state-of-the-art optical multicoatings in its apochromatic air-spaced ED triplet optics. The result is images that are essentially free of the annoying halo of unfocused violet light (chromatic aberration) that mars the view of bright stars and solar system objects in lesser scopes, despite the scope's relatively large aperture, and even at very high magnifications.\u003c\/p\u003e\n\u003cp\u003eThe Explore Scientific ES127 is a natural on an equatorial mount as the heart of your primary observing system. In addition, it's an excellent astrograph for serious wide field imaging, as well as crisp solar system imaging. Considering its surprisingly reasonable price for a 5\" apochromatic triplet and in view of the great optical performance that comes as standard equipment, the 5\" Explore Scientific ES127 is a terrific buy!\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures of this Telescope . . .\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eED triplet refractor optics:\u003c\/strong\u003e 127mm (5\") aperture, 952mm focal length, f\/7.5 focal ratio three-lens air-spaced optical system. The optics use a center lens element of Hoya FCD1 (Dense Fluor Crown) glass, the Hoya equivalent of FPL-51 ED (Extra-low Dispersion) glass. This ED element produces superior sharpness and color correction by minimizing the chromatic aberration, the \"false\" color fringing seen around bright objects when light rays pass through standard crown-and-flint doublet objectives, particularly those with apertures in the ES127 class. The result is to reduce spurious color halos and fringing to vanishingly low levels.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFully multicoated optics:\u003c\/strong\u003e The ES127 triplet objective lens has EMD™ (Enhanced Multilayer Deposition) antireflection multicoatings on all air-to-glass surfaces for high light transmission, minimal light scatter, and excellent contrast.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInternal light baffles:\u003c\/strong\u003e The aluminum tube body has contrast-enhancing internal light baffles and a specially darkened tube interior to provide dark sky backgrounds and high contrast.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCollimatable optics:\u003c\/strong\u003e One of the bonuses of owning a refractor is that, compared to standard reflector telescopes, they almost never require realigning of the optics (collimation). However, any air-spaced refractor telescope may require optical recentering if the lens elements are knocked out of alignment by a heavy blow during shipping or use. Removing the dew shield will give you access to the lens centering screws in the sides of the lens cell, which you can then adjust yourself by referring to the supplied instructions. You can also send your scope to Explore Scientific's Service Center for precision alignment. A standard service charge applies for factory realignment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDew shield:\u003c\/strong\u003e The supplied retractable dew shield slows the formation of dew on the lens in cold weather to extend your undisturbed observing time. It also improves the contrast, similar to the effect of the lens shade on a camera lens, when observing during the day or when there is excessive ambient light at night, such as a neighbor's backyard security light. A slip-on metal dust cap is standard.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual speed 2\" rack and pinion focuser:\u003c\/strong\u003e The rotating precision-made no-backlash focuser has dual-speed focusing. There are two coarse focusing knobs. The right knob also has a smaller concentric knob with a 10:1 reduction gear microfine focusing ratio. This provides exceptionally precise image control during high magnification visual observing and critical DSLR or CCD imaging. The large focus knobs have ribbed gripping surfaces so they are easy to operate, even while wearing gloves or mittens in cold weather.\u003c\/p\u003e\n\u003cp\u003eThe focuser drawtube has a scale marked in centimeters and 1mm increments. This lets you note individual focuser positions for easy return to the correct focus when switching between visual use and photography. Lock knobs let you adjust the tension on the drawtube to accommodate varying eyepiece\/photo accessory loads, as well as firmly lock in a photographic focus. The focuser terminates in a non-marring 2\" compression ring accessory holder. Two 2\" draw tube extensions are included to let adjust the back focus when using a diagonal and eyepieces versus a camera.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMounting rings and dovetail:\u003c\/strong\u003e The ES127 has dual split mounting rings with a dovetail plate that fits the Vixen-style dovetail slot on the head of many of the most popular medium capacity German equatorial mounts. Such mounts include Celestron and iOptron go-to mounts, among others. A spacer\/stabilizing bar on the top of the rings provides a carrying handle that makes it easy to transport the optical tube and install it on your equatorial mount. There is a mounting shoe for an optional finderscope installed on the body of the scope.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eExtended lifetime warranty:\u003c\/strong\u003e This individually serial numbered Explore Scientific telescope is backed by a limited one year warranty, which will be extended to an Explore Scientific transferable Life of The Product limited warranty when its warranty card is registered with Explore Scientific within 60 days of purchase. Full details on this unique transferable lifetime warranty.\u003c\/p\u003e\n\u003ch2\u003eTech Details: \u003c\/h2\u003e\n\u003ctable id=\"product-attribute-specs-table\" class=\"table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eAperture\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e5\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBinary and Star Cluster Observation\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eVery Good\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Length\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e952mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Ratio\u003c\/th\u003e\n\u003ctd class=\"data\"\u003ef\/7.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGalaxy and Nebula Observation\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHighest Useful Magnification\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e271x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLunar Observation\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eGreat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e22 lbs.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePlanetary Observation\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eVery Good\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eResolution\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e0.91 arc seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTelescope Type\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eRefractor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eVisual Limiting Magnitude\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e13\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1 year, extendable to lifetime\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003eSupplied Accessories: \u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDual tube rings with Vixen-style dovetail\u003c\/li\u003e\n\u003cli\u003e2\" dual speed rack and pinion focuser\u003c\/li\u003e\n\u003cli\u003eRetractable dew shield\u003c\/li\u003e\n\u003cli\u003eDust covers\u003c\/li\u003e\n\u003cli\u003eFinderscope base\u003c\/li\u003e\n\u003cli\u003e2\" 99% reflective dielectric star diagonal\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40221667950665,"sku":"ES127B","price":1499.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/17670.jpg?v=1722357305"},{"product_id":"explore-scientific-20mm-100-field-waterproof-2-eyepiece","title":"Explore Scientific 20mm 100° field waterproof 2\" eyepiece","description":"\u003cp\u003eThe 100° apparent field of the Explore Scientific 20mm waterproof 2\" eyepiece provides superb maximum field\/medium power observing in all scopes, from small apo refractors to the largest Dobsonians and catadioptrics.\u003c\/p\u003e\n\u003cp\u003eThe 20mm Explore Scientific 100° field 2\" eyepiece is O-ring sealed and nitrogen-purged to be 100% waterproof. To insure a perfect seal, Explore Scientific tests every eyepiece in one meter of water for 30 minutes before shipping.\u003c\/p\u003e\n\u003cp\u003eInternally sealing the eyepiece and purging it with inert, dry nitrogen gas prevents internal fogging in the eyepiece when observing at sub-freezing temperatures. For observers in dusty climates, sealing keeps wind-blown dust and fine particulates from getting into the eyepiece body. For observers in very humid climates, sealing prevents the growth of fungus on the internal lens elements. For all observers, complete sealing maximizes the life of the internal optical coatings and makes the eyepiece easier to clean, as there is no risk of cleaning solution migrating from the top of the lens and seeping around edges to be trapped in between elements.\u003c\/p\u003e\n\u003cp\u003eThe 20mm Explore Scientific eyepiece, has high contrast, comfortable eye relief, and full field sharpness - with well-controlled astigmatism, field curvature, and lateral color. Its nine element optical system (using lenses of dense crown, light crown, dense flint, and lanthanum rare earth optical glasses) is designed for maximum field\/medium power deep space use with telescopes having focal ratios down as low as f\/4. It is exceptionally effective on nebulas with fast f\/ratio reflectors, such as Dobsonians, as it gives both an immense field and a bright exit pupil (almost 4.5mm with the typical f\/4.5 Dob). Its very wide field also makes it convenient for moderate power lunar and globular cluster observing with Dobsonians, as you have much longer to observe before the planet drifts out of the field and the scope has to be repositioned than you do with a 60° or 70° (or even 82°) field eyepiece. In addition to Dobs, the new 20mm Explore Scientific Explore Scientific is marvelous for observing open clusters, nebulas, galaxy clusters, and globular clusters with \u003cem\u003eany \u003c\/em\u003etelescope capable of using a 2\" eyepiece.\u003c\/p\u003e\n\u003cp\u003eThe 100° apparent field of this new 20mm Explore Scientific eyepiece is nearly 50% larger in area than an 82° field eyepiece. You \u003cem\u003ecould \u003c\/em\u003eget a similar true field with a longer focal length (but narrower apparent field) conventional eyepiece, but the 20mm Explore Scientific Explore Scientific has the benefits of the higher power and darker sky backgrounds that are inherent in its shorter focal length. \u003c\/p\u003e\n\u003cp\u003eThere is a soft roll down eyecup to shield your eye from ambient light (from a neighbor's security light, for example) and improve the image contrast. With an eye relief of 14.5mm, the 20mm Explore Scientific would normally somewhat vignette the field of view for eyeglass wearers. However, since the 100° field is so wide that you can't see the full field without having to move your head from side to side to take it all in anyway, vignetting in the conventional sense is not a problem.\u003c\/p\u003e\n\u003cp\u003eThe 20mm Explore Scientific fits 2\" focusers only. A safety groove is machined into the 2\" chrome barrel to engage your focuser thumbscrew. This helps prevent the eyepiece from falling should the thumbscrew accidentally loosen while observing.\u003c\/p\u003e\n\u003cp\u003eThis individually serial numbered Explore Scientific eyepiece is backed by a limited one year warranty, which will be extended to an ExploreScientific \u003cem\u003etransferable product lifetime\u003c\/em\u003e limited warranty when its warranty card is registered with Explore Scientific within 60 days of purchase.With the extended product lifetime warranty, this Explore Scientific eyepiece will be protected for as long as it continues to be manufactured, plus an additional five years. Full details on this \u003ca href=\"https:\/\/www.astronomics.com\/explore-scientific-warranty-information_t.aspx\"\u003eunique transferable lifetime warranty\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eTech Details:\u003c\/h2\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cstrong\u003e\u003cspan class=\"speccell speccell-left\"\u003eItem Number\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e   \u003c\/span\u003e\u003cspan class=\"speccell\"\u003eEPWP10020–01\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cstrong\u003e\u003cspan class=\"speccell speccell-left\"\u003eFocal Length\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e    2\u003c\/span\u003e\u003cspan class=\"speccell\"\u003e0mm\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cstrong\u003e\u003cspan class=\"speccell speccell-left\"\u003eLength\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e              \u003c\/span\u003e\u003cspan class=\"speccell\"\u003e156mm\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cstrong\u003e\u003cspan class=\"speccell speccell-left\"\u003eWidth\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e                \u003c\/span\u003e\u003cspan class=\"speccell\"\u003e70mm\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cstrong\u003e\u003cspan class=\"speccell speccell-left\"\u003eWeight\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e              \u003c\/span\u003e\u003cspan class=\"speccell\"\u003e916g\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cstrong\u003e\u003cspan class=\"speccell speccell-left\"\u003eBarrel Size\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e       \u003c\/span\u003e\u003cspan class=\"speccell\"\u003e2.00”\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cstrong\u003e\u003cspan class=\"speccell speccell-left\"\u003eEye Relief\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e         \u003c\/span\u003e\u003cspan class=\"speccell\"\u003e14.5mm\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cstrong\u003e\u003cspan class=\"speccell speccell-left\"\u003eField Stop Diameter\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e   \u003c\/span\u003e\u003cspan class=\"speccell\"\u003e34.8mm\u003c\/span\u003e\n\u003c\/div\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40221668573257,"sku":"ES20","price":499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/files\/EPWP10020-01_1_2000x2000_6abfe4fc-3e77-4651-9455-fa4de391a7c2.webp?v=1722011197"},{"product_id":"explore-scientific-2x-barlow-for-1-25-eyepieces","title":"Explore Scientific 2X Barlow for 1.25\" eyepieces","description":"\u003cp\u003eThis four-element 1.25\" 2x Explore Scientific focal extender (Barlow lens) has an exceptionally flat field and essentially no color fringing with all telescope types and focal ratios.\u003c\/p\u003e\n\u003cp\u003eThe 1.25\" 2x Explore Scientific premium Barlow (described by Explore Scientific as a focal extender, rather than a Barlow) uses an advanced four-element optical design to deliver a flatter field of view with sharper field edges than even the best three-element apochromatic Barlows.\u003c\/p\u003e\n\u003cp\u003eThis Explore Scientific focal extender doubles the power of any 1.25\"eyepieces used with it, providing high powers while maintaining thecomfortable eye relief of longer focal length eyepieces. This makes aBarlow\/long focal length eyepiece combination ideal for those who \u003cem\u003emust \u003c\/em\u003ewear eyeglasses while observing due to astigmatism.\u003c\/p\u003e\n\u003cp\u003eAll air-to-glass surfaces are fully coated with multiple layers of individually tuned ion-deposited anti-reflection materials for maximum light transmission and contrast. The lens edges and all internal metal surfaces are blackened to maximize the image contrast. Your eyepieces are held in place by a non-marring clamp ring that won't scratch your eyepieces as a conventional metal thumbscrew can.\u003c\/p\u003e\n\u003cp\u003eWhile not specifically claimed to be apochromatic in performance, color fringing in this Explore Scientific focal extender is essentially eliminated with all telescope types and focal ratios.\u003c\/p\u003e\n\u003cp\u003eThis Explore Scientific focal extender is protected by a one year warranty that can be extended to a transferable limited product lifetime warranty at no cost by simply sending in the warranty card. With the extended product lifetime warranty, this Explore Scientific focal extender is protected for as long as it continues to be manufactured, plus an additional five years.\u003c\/p\u003e\n\u003ch2\u003eTech Details:\u003c\/h2\u003e\n\u003cdiv class=\"tab-pane tabactive\" id=\"tab-1\"\u003e\n\u003cdiv class=\"tabcontent\"\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cspan class=\"speccell speccell-left\"\u003eItem Number\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"speccell\"\u003eFE02–125\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cspan class=\"speccell speccell-left\"\u003eBarrel Size\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"speccell\"\u003e1.25-inch\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cspan class=\"speccell speccell-left\"\u003eLength\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"speccell\"\u003e96mm\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cspan class=\"speccell speccell-left\"\u003eWidth\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"speccell\"\u003e45mm\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cspan class=\"speccell speccell-left\"\u003eWeight\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"speccell\"\u003e260 grams; 9.1 oz\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40221672341577,"sku":"ESB1X2","price":119.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/files\/2x_683x683_77ec04da-dd44-4905-b2f8-cbb8f5a37a72.webp?v=1722013586"},{"product_id":"explore-scientific-3x-barlow-for-1-25-eyepieces","title":"Explore Scientific 3X Barlow for 1.25\" eyepieces","description":"\u003cp\u003eThis new four-element 1.25\" 3x Explore Scientific focal extender (Barlow lens) triples the power of any eyepiece used with it, with flat-field and essentially apochromatic performance.  The 1.25\" 3x Explore Scientific premium focal extender (Barlow lens) uses an advanced four-element optical design to deliver a flatter field-of-view with sharper field edges than even the best three-element apochromatic Barlows.\u003c\/p\u003e\n\u003cp\u003eThis Explore Scientific focal extender triples the power of any 1.25\" eyepieces used with it, providing high powers while maintaining the comfortable eye relief of longer focal length eyepieces. This makes a Barlow\/long focal length eyepiece combination such as this ideal for those who \u003cem\u003emust \u003c\/em\u003ewear eyeglasses while observing due to astigmatism.\u003c\/p\u003e\n\u003cp\u003eAll air-to-glass surfaces are fully coated with multiple layers of individually tuned ion-deposited anti-reflection materials for maximum light transmission and contrast. The lens edges and all internal metal surfaces are blackened to maximize the image contrast. Your eyepieces are held in place by a non-marring clamp ring that won't scratch your eyepieces as a conventional metal thumbscrew can.\u003c\/p\u003e\n\u003cp\u003eWhile not specifically claimed to be apochromatic in performance, color fringing in this Explore Scientific 3x 1.25\" focal extender is essentially eliminated with all telescope types and focal ratios.\u003c\/p\u003e\n\u003cp\u003eThis Explore Scientific focal extender is protected by a one year warranty that can be extended to a transferable limited product lifetime warranty at no cost by simply sending in the warranty card. With the extended product lifetime warranty, this Explore Scientific focal extender is protected for as long as it continues to be manufactured, plus an additional five years.\u003c\/p\u003e\n\u003ch2\u003eTech Details:\u003c\/h2\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cspan class=\"speccell speccell-left\"\u003eItem Number\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"speccell\"\u003eFE03–125\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cspan class=\"speccell speccell-left\"\u003eBarrel Size\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"speccell\"\u003e1.25-inch\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cspan class=\"speccell speccell-left\"\u003eLength\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"speccell\"\u003e93mm\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cspan class=\"speccell speccell-left\"\u003eWidth\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"speccell\"\u003e45mm\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cspan class=\"speccell speccell-left\"\u003eWeight\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"speccell\"\u003e249 grams; 8.7 oz\u003c\/span\u003e\n\u003c\/div\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40221672407113,"sku":"ESB1X3","price":139.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/19242.jpg?v=1662967966"},{"product_id":"explore-scientific-5x-barlow-for-1-25-eyepieces","title":"Explore Scientific 5X Barlow for 1.25\" eyepieces","description":"\u003cp\u003eFor high power with a short focal length refractor or reflector, this Explore Scientific four-element 5x image amplifier (Barlow lens) is hard to beat. It quintuples the power of any eyepiece used with it, with a flat field and essentially no color fringing .\u003c\/p\u003e\n\u003cp\u003eThis very high power four-element 1.25\" 5x Explore Scientific premium focal extender (Barlow lens) uses an advanced four-element optical design to deliver a flatter field-of-view with sharper field edges than even the best three-element apochromatic Barlows.\u003c\/p\u003e\n\u003cp\u003eThis Explore Scientific focal extender multiplies the power of any 1.25\" eyepiece used with it by five times, providing very high powers while maintaining the comfortable eye relief of longer focal length eyepieces. This makes a Barlow\/long focal length eyepiece combination ideal for those who \u003cem\u003emust \u003c\/em\u003ewear eyeglasses while observing due to astigmatism.\u003c\/p\u003e\n\u003cp\u003eAll air-to-glass surfaces are fully coated with multiple layers of individually tuned ion-deposited anti-reflection materials for maximum light transmission and contrast. The lens edges and all internal metal surfaces are blackened to maximize image contrast. Your eyepieces are held in place by a non-marring clamp ring that won't scratch your eyepieces as a conventional metal thumbscrew can.\u003c\/p\u003e\n\u003cp\u003eIts very high power 5x optical system is a perfect match for short focal length refractors or reflectors - particularly for viewing or imaging planets in minute detail. While it is not specifically claimed to be apochromatic in performance, color fringing in this Explore Scientific focal extender is essentially eliminated, regardless of the telescope type and\/or focal ratio.\u003c\/p\u003e\n\u003cp\u003eThis Explore Scientific focal extender is protected by a one year warranty that can be extended to a transferable limited product lifetime warranty at no cost by simply sending in the warranty card. With the extended product lifetime warranty, this Explore Scientific focal extender is protected for as long as it continues to be manufactured, plus an additional five years.\u003c\/p\u003e\n\u003ch2\u003eTech Details:\u003c\/h2\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cspan class=\"speccell speccell-left\"\u003eItem Number\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"speccell\"\u003eFE05–125\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cspan class=\"speccell speccell-left\"\u003eBarrel Size\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"speccell\"\u003e1.25-inch\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cspan class=\"speccell speccell-left\"\u003eLength\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"speccell\"\u003e96mm\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cspan class=\"speccell speccell-left\"\u003eWidth\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"speccell\"\u003e45mm\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cspan class=\"speccell speccell-left\"\u003eWeight\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"speccell\"\u003e260 grams; 9.2 oz\u003c\/span\u003e\n\u003c\/div\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40221672439881,"sku":"ESB1X5","price":129.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/19243.jpg?v=1662967968"},{"product_id":"explore-scientific-2x-barlow-for-2-eyepieces-with-1-25-adapter","title":"Explore Scientific 2X Barlow for 2\" eyepieces, with 1.25\" adapter","description":"\u003cp\u003eThis new four-element 2\" 2x Explore Scientific focal extender (Barlow lens) has a 1.25\" eyepiece adapter so you can use both 2\" and 1.25\" eyepieces in your 2\" focuser.\u003c\/p\u003e\n\u003cp\u003eThe 2\" 2x Explore Scientific premium Barlow (described by Explore Scientific as a focal extender, rather than a Barlow) uses an advanced four-element optical design that delivers a flatter field-of-view with sharper field edges than even the best three-element apochromatic Barlows. A 1.25\" adapter lets you use this Explore Scientific 2\" focal extender with your 1.25\" eyepieces, as well.\u003c\/p\u003e\n\u003cp\u003eThis Explore Scientific focal extender doubles the power of any 2\" or 1.25\"eyepieces used with it, providing high powers while maintaining thecomfortable eye relief of longer focal length eyepieces. You get all ofthe wide field of view of your 2\" eyepieces without degrading thesharpness at the edge of the field as a conventional Barlow can.\u003c\/p\u003e\n\u003cp\u003eAll air-to-glass surfaces are fully coated with multiple layers of individually tuned ion-deposited anti-reflection materials for maximum light transmission and contrast. The lens edges and all internal metal surfaces are  blackened to maximize the image contrast. Eyepieces are held in place in both the 2\" focal extender and the 1.25\" adapter by non-marring clamp rings that won't scratch your eyepieces as a conventional metal thumbscrew can. The 2\" barrel is threaded to hold 2\" filters.\u003c\/p\u003e\n\u003cp\u003eWhile it is not specifically claimed to be apochromatic in performance, the color fringing in this 2\" Explore Scientific focal extender is essentially eliminated for all practical purposes with all telescope types and focal ratios.\u003c\/p\u003e\n\u003cp\u003eThis Explore Scientific focal extender is protected by a one year warranty that can be extended to a transferable limited product lifetime warranty at no cost by simply sending in the warranty card. With the extended product lifetime warranty, this Explore Scientific focal extender is protected for as long as it continues to be manufactured, plus an additional five years.\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003eTech Details:\u003c\/h2\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cspan class=\"speccell speccell-left\"\u003eItem Number\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"speccell\"\u003eFE02–020\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cspan class=\"speccell speccell-left\"\u003eBarrel Size\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"speccell\"\u003e2.0-inch\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cspan class=\"speccell speccell-left\"\u003eLength\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"speccell\"\u003e118mm\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cspan class=\"speccell speccell-left\"\u003eWidth\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"speccell\"\u003e66mm\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spanrow\"\u003e\n\u003cspan class=\"speccell speccell-left\"\u003eWeight\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"speccell\"\u003e20 oz; 0.57 kg\u003c\/span\u003e\n\u003c\/div\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40221672505417,"sku":"ESB2X2","price":179.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/files\/2xx_674x674_e40fa0fa-a37d-4d36-bfc2-66b7d97f93f0.webp?v=1722013679"},{"product_id":"explore-scientific-9mm-120-field-argon-purged-waterproof-2-eyepiece","title":"Explore Scientific 9mm 120° field argon-purged waterproof 2\" eyepiece","description":"\u003cp\u003eA first from Explore Scientific, this 2\" 9mm deep sky eyepiece has an immense 120° field that seems to make your telescope disappear and plunge you headfirst into the Universe.\u003c\/p\u003e\n\u003cp\u003eThe 9mm Explore Scientific has a hyperwide apparent field of view that's an immense 120° across! It's the widest field of view available in any commercial eyepiece. An astronomy first from Explore Scientific, the 120° apparent field of this new 9mm Explore Scientific shows more than twice the sky area of an 82° eyepiece and even a whopping 44% larger area than a 100° eyepiece.\u003c\/p\u003e\n\u003cp\u003eThe prototype 9mm was field-tested for the first time at Starfest in Canada, August 2011. Experienced astronomers who waited in line to get a chance to view through the hyperwide 120° Explore Scientific 9mm were stunned by the full-immersion observing experience. Even when compared with a 9mm 100° field eyepiece, the difference was \"quite palpable,\" to quote one experienced observer. The telescope seemed to truly disappear in the 120° field, bringing them face to face with the Universe in an intimate and personal way never before possible. It's an awe-inspiring observing experience you can repeat for yourself every night you go out with your scope.\u003c\/p\u003e\n\u003cp\u003eThis deep sky eyepiece, the first of its kind for astronomy, produces a highly corrected field across its entire 120° apparent field. The views of compact globular clusters, nebulas, and galaxies are breathtaking. You can use the field of view calculator under the formula tab above to see just how much sky the Explore Scientific can reveal with your telescope.\u003c\/p\u003e\n\u003cp\u003eThe Explore Scientific 9mm is designed specifically for nighttime deep sky observing. It is not an eyepiece for daytime use and will show some lateral color at the edges of the very wide field in daytime use. This lateral color is not visible during the nighttime observing at which this unique eyepiece is designed to excel.\u003c\/p\u003e\n\u003cp\u003eThis 2\" Explore Scientific 120° eyepiece is O-ring sealed and \u003cem\u003eargon-purged\u003c\/em\u003e to be 100% waterproof. Internally sealing the eyepiece and purging it with inert, dry argon gas (which has lower permeability through the eyepiece's polymer seals than nitrogen) prevents internal fogging in the eyepiece when observing at sub-freezing temperatures. For observers in dusty climates, sealing keeps wind-blown dust and fine particulates from getting into the eyepiece body. For observers in very humid climates, sealing prevents the growth of fungus on the internal lens elements. For all observers, complete sealing maximizes the life of the internal optical coatings and makes the eyepiece easier to clean, as there is no risk of cleaning solution migrating from the top of the lens and seeping around edges to be trapped in between elements.\u003c\/p\u003e\n\u003cp\u003eThe 9mm Explore Scientific eyepiece, has high contrast and full field sharpness - with well-controlled astigmatism, field curvature, and lateral color. Its twelve element\/eight group optical system (using lenses of dense crown, light crown, dense flint, and lanthanum rare earth optical glasses with 15-layer multicoatings on all air\/glass surfaces) is designed for maximum field\/high power deep space use with telescopes having focal ratios down to f\/4 and below.\u003c\/p\u003e\n\u003cp\u003eIts very wide field makes this 9mm eyepiece convenient for observing with Dobsonians, as you have much longer to observe before an object drifts out of the field and the scope has to be repositioned than you do with a 70° or 82° (or even 100°) field eyepiece.\u003c\/p\u003e\n\u003cp\u003eThere is a soft rolldown eyecup to shield your eye from ambient light (from a neighbor's security light, for example) and improve the image contrast. The eye relief is a comfortable 13mm.\u003c\/p\u003e\n\u003cp\u003eThe 9mm Explore Scientific fits 2\" focusers only. A shallow tapered groove is machined into the 2\" chrome barrel to engage your focuser thumbscrew or compression ring. This helps prevent the eyepiece from falling should the thumbscrew accidentally loosen while observing. The sides of the groove are slanted to avoid catching on your focuser's compression ring when removing the eyepiece from your scope.\u003c\/p\u003e\n\u003cp\u003eThis individually serial numbered Explore Scientific eyepiece is backedby a limited one year warranty, which will be extended to an ExploreScientific \u003cem\u003etransferable product lifetime\u003c\/em\u003e limited warranty when its warranty card is registered with Explore Scientific within 60 days of purchase.With the extended product lifetime warranty, this Explore Scientificeyepiece will be protected for as long as it continues to bemanufactured, plus an additional five years. Full details on this \u003ca href=\"https:\/\/www.astronomics.com\/explore-scientific-warranty-information_t.aspx\"\u003eunique transferable lifetime warranty\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40221674012745,"sku":"ES12009","price":899.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/files\/120_9mm_965x965_3bc03bfe-2753-4273-b3b3-f8d1b3427c94.webp?v=1722356783"},{"product_id":"explore-scientific-5-5mm-100-field-waterproof-2-eyepiece","title":"Explore Scientific 5.5mm 100° Field Waterproof 2\" Eyepiece","description":"\u003cp\u003eThe Explore Scientific 5.5mm argon-purged waterproof 2\" eyepiece combines a high power capability with a 100° apparent field to provide a jaw-dropping observing experience in your telescope.\u003c\/p\u003e\n\u003cp\u003eThe 5.5mm 100° field argon-purged Explore Scientific eyepiece is designed to provide a spectacular maximum field\/high power image with telescopes having focal ratios as fast as f\/4. Its very wide field also makes it convenient for moderate power lunar and planetary observing with Dobsonians, as you have much longer to observe before the planet drifts out of the field and the scope has to be repositioned. That said, it is worth noting that the new 5.5mm Explore Scientific is marvelous for open clusters, nebulas, galaxy clusters, and globular clusters with any telescope capable of using a 2” eyepiece.\u003c\/p\u003e\n\u003cp\u003eThe 100° apparent field of this 5.5mm Explore Scientific eyepiece is nearly 50% larger in area than an 82° field eyepiece. You could get a similar true field with a longer focal length (but narrower apparent field) conventional eyepiece, but the 5.5mm Explore Scientific Explore Scientific has the benefits of the higher power and darker sky backgrounds that are inherent in its shorter focal length.\u003c\/p\u003e\n\u003cp\u003eThe new 5.5mm Explore Scientific 100° field 2” eyepiece is O-ring sealed and argon-purged to be 100% waterproof. While waterproofing might seem important only for observing underwater, waterproofing serves five useful purposes for the astronomical observer as well.\u003c\/p\u003e\n\u003cp\u003eOne, internally sealing the eyepiece and purging it with inert, dry nitrogen gas prevents internal fogging in the eyepiece when observing at very low temperatures. Two, for observers in dusty climates, it halts the intrusion of wind-blown dust and fine particulates into the eyepiece body. Three, for observers in very humid climates, it prevents the growth of fungus on the internal lens elements. Four, for all observers, it maximizes the life of the internal optical coatings. And finally, five, the waterproof 5.5mm Explore Scientific eyepiece is easier to clean, as there is no risk of cleaning solution migrating from the top of the lens and seeping around edges to be trapped in between elements. To insure a perfect seal, Explore Scientific tests every eyepiece in one meter of water for 30 minutes before shipping.\u003c\/p\u003e\n\u003cp\u003eThere is a soft rolldown eyecup to shield the eye from ambient light (from a neighbor’s security light, for example) and improve the image contrast. At an eye relief of 12.5mm, the 5.5mm Explore Scientific would normally somewhat vignette the field of view for eyeglass wearers. However, since the 100° field is so wide that you can’t see the full field without having to move your head from side to side to take it all in anyway, vignetting in the conventional sense is not a problem.\u003c\/p\u003e\n\u003cp\u003eThe 5.5mm Explore Scientific has high contrast, comfortable eye relief, and full field sharpness – with well-controlled astigmatism, field curvature, and lateral color. The 5.5mm Explore Scientific fits 2\" focusers only. A safety groove is machined into the 2\" chrome barrel to engage your focuser thumbscrew. This helps prevent the eyepiece from falling should the thumbscrew accidentally loosen while observing.\u003c\/p\u003e\n\u003cp\u003eThis individually serial numbered Explore Scientific eyepiece is backed by a limited one year warranty, which will be extended to an Explore Scientific transferable lifetime limited warranty when its warranty card is registered with Explore Scientific within 60 days of purchase.\u003c\/p\u003e\n\u003ch2\u003eTech Details:\u003c\/h2\u003e\n\u003ctable id=\"product-attribute-specs-table\" class=\"table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1 year, extendable to lifetime\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40481972125769,"sku":"ES05","price":299.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/files\/EPWP10055-01_3_2000x2000_04e50e19-f0fb-4717-ba33-2417a2e640bd.webp?v=1722018745"},{"product_id":"explore-scientific-25mm-100-field-argon-purged-waterproof-2-eyepiece","title":"Explore Scientific 25mm 100° Field Argon-Purged Waterproof 2\" Eyepiece","description":"\u003cp\u003eThe 100° apparent field of this Explore Scientific first-of-its-kind 25mm argon-purged waterproof 2\" eyepiece provides superb maximum field\/medium power observing in all scopes, from small apo refractors to the largest Dobsonians and catadioptrics.\u003c\/p\u003e\n\u003cp\u003eThe new 25mm Explore Scientific 100° field 2\" eyepiece is O-ring sealed and argon-purged to be 100% waterproof. To insure a perfect seal, Explore Scientific tests every eyepiece in one meter of water for 30 minutes before shipping.\u003c\/p\u003e\n\u003cp\u003eInternally sealing the eyepiece and purging it with inert, dry argon gas prevents internal fogging in the eyepiece when observing at sub-freezing temperatures. For observers in dusty climates, sealing keeps wind-blown dust and fine particulates from getting into the eyepiece body. For observers in very humid climates, sealing prevents the growth of fungus on the internal lens elements. For all observers, complete sealing maximizes the life of the internal optical coatings and makes the eyepiece easier to clean, as there is no risk of cleaning solution migrating from the top of the lens and seeping around edges to be trapped in between elements.\u003c\/p\u003e\n\u003cp\u003eThe 25mm Explore Scientific eyepiece has high contrast, comfortable eye relief, and full field sharpness - with well-controlled astigmatism, field curvature, and lateral color. Its optical system (using lenses of dense crown, light crown, dense flint, and lanthanum rare earth optical glasses) is designed for maximum field\/medium power deep space use with telescopes having focal ratios down as low as f\/4. It is exceptionally effective on nebulas with fast f\/ratio reflectors, such as Dobsonians, as it gives both an immense field and a bright exit pupil (over 5.5mm with the typical f\/4.5 Dob). Its very wide field also makes it convenient for moderate power lunar and globular cluster observing with Dobsonians, as you have much longer to observe before the planet drifts out of the field and the scope has to be repositioned than you do with a 60° or 70° (or even 82°) field eyepiece. In addition to Dobs, the new 25mm Explore Scientific Explore Scientific is marvelous for observing open clusters, nebulas, galaxy clusters, and globular clusters with any telescope capable of using a 2\" eyepiece.\u003c\/p\u003e\n\u003cp\u003eThe 100° apparent field of this new 25mm Explore Scientific eyepiece is nearly 50% larger in area than an 82° field eyepiece. You \u003cem\u003ecould \u003c\/em\u003eget a similar true field with a longer focal length (but narrower apparent field) conventional eyepiece, but the 25mm Explore Scientific Explore Scientific has the benefits of the higher power and darker sky backgrounds that are inherent in its shorter focal length. \u003c\/p\u003e\n\u003cp\u003eThere is a soft rolldown eyecup to shield your eye from ambient light (from a neighbor's security light, for example) and improve the image contrast.\u003c\/p\u003e\n\u003cp\u003eThe 25mm Explore Scientific fits 2\" focusers only. A safety groove is machined into the 2\" chrome barrel to engage your focuser thumbscrew. This helps prevent the eyepiece from falling should the thumbscrew accidentally loosen while observing.\u003c\/p\u003e\n\u003cp\u003eThis individually serial numbered Explore Scientific eyepiece is backed by a limited one year warranty, which will be extended to an Explore Scientific \u003cem\u003etransferable lifetime\u003c\/em\u003e limited warranty when its warranty card is registered with Explore Scientific within 60 days of purchase. Here's a link to full details on this \u003ca href=\"https:\/\/www.astronomics.com\/explore-scientific-warranty-information_t.aspx\"\u003eunique transferable lifetime warranty\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eTech Details: \u003c\/h2\u003e\n\u003ctable id=\"product-attribute-specs-table\" class=\"table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBarrel Size\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEye Relief\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e14mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eField of view\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Length\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e25mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of optical elements\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e2 lbs, 10 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1 year, extendable to lifetime\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40481972158537,"sku":"ES25","price":899.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/files\/EPWP10025-01_1_2000x2000_bdaa229a-baa0-4b2b-a1ce-b799dbb94b86.webp?v=1722012940"},{"product_id":"explore-scientific-ar102-4-f-6-5-achromatic-doublet-refractor-optical-tube","title":"Explore Scientific AR102 4\" f\/6.5 Achromatic Doublet Refractor Optical Tube","description":"\u003cdiv class=\"heading\"\u003e\u003cstrong\u003eThis Explore Scientific 4\" refractor has:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"heading\"\u003e\n\u003cul\u003e\n\u003cli\u003eBig 4\" aperture fully multicoated achromatic doublet refractor optics\u003c\/li\u003e\n\u003cli\u003eCollimatable objective lens cell for fine-tuning the images\u003c\/li\u003e\n\u003cli\u003eBig 8 x 50mm finderscope\u003c\/li\u003e\n\u003cli\u003e2\" dielectric star diagonal with 1.25\" eyepiece adapter\u003c\/li\u003e\n\u003cli\u003eTube rings with carry handle and Vixen-style dovetail plate\u003c\/li\u003e\n\u003cli\u003eLifetime transferrable warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003eThis highly portable 4\" achromatic refractor optical tube (only 25.5\" long, with a weight of 11.3 pounds) is a sensational value! It has a 102mm (4\") diameter multicoated doublet objective lens (663mm focal length f\/6.5). Its diffraction limited optics are sharp and well suited to serious deep space observing of binary stars, star clusters, and the brighter nebulas and galaxies, in addition to excellent high contrast planetary and lunar images. The objective lens cell is fully collimatable, using push\/pull collimation screws, so you can optimize your image quality.\u003c\/p\u003e\n\u003cp\u003eThe 4\" Explore Scientific is a great grab-and-go scope for quick looks at the sky when mounted on a suitable altazimuth mount. It's good enough optically to be the heart of a reasonably-priced serious observing system when mounted on one of the many equatorial mounts and go-to altazimuth mounts from Celestron, iOptron, and others.\u003c\/p\u003e\n\u003cp\u003eSome chromatic aberration is visible on stars and objects of 2nd or 3rd magnitude and brighter, as you would expect in an achromatic refractor with such a fast focal ratio. However, the spurious color is well controlled and not unreasonable, thanks to careful optical design, and has little effect on deep space observing. Most observers feel the relatively limited amount of chromatic aberration visible is a small price to pay for the scope's many other virtues of portability, sharpness, contrast, and optical clarity.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDetails About This Optical Tube . . .\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAchromatic refractor optics:\u003c\/strong\u003e 4\" (102mm) aperture, 663mm focal length, f\/6.5 air-spaced crown and flint glass doublet lens. Tube diameter is 3.96\" (100.7mm) and the tube length with dewshield installed is 25.5\" (648mm). Scope weight is 11.3 pounds (4.67 kg).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCollimatable lens cell:\u003c\/strong\u003e The 4\" Explore Scientific lens is precision collimated at the factory to give optimum performance. Although you may never need to adjust optical alignment, the ES102D allows for collimating the lens set should the telescope ever require it due to a fall or very rough handling.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMulticoated optics:\u003c\/strong\u003e Fully coated on all surfaces with multiple layers of antireflection materials for high light transmission and good contrast.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInternal light baffles:\u003c\/strong\u003e Multiple internal knife-edge baffles in the optical tube mask and deflect unwanted stray light for improved contrast.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDew shield:\u003c\/strong\u003e The removable 190.5mm (7.5\") diameter dew shield slows the formation of dew on the lens in cold weather to extend your undisturbed observing time. Also improves visual and photographic contrast by shielding the lens from off-axis ambient light (the neighbor's yard light, moonlight, etc.)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDust covers:\u003c\/strong\u003e Front and rear dust covers are provided.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual-speed Crayford-style focuser:\u003c\/strong\u003e 2\" focuser, with adjustable tension and lock knobs. The 2\" eyepiece holder uses a non-marring brass compression ring to hold the supplied 2\" star diagonal in place without scratching the diagonal barrel. The precision-made 2\" focuser has dual-speed focusing. There are two coarse focusing knobs. The right knob also has a smaller concentric knob with 10:1 ratio reduction gear microfine focusing. This provides exceptionally precise image control during high power visual observing or critical DSLR or CCD imaging. The focus knobs have ribbed gripping surfaces so they are easy to operate, even while wearing gloves or mittens in cold weather.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDielectric star diagonal:\u003c\/strong\u003e 90° viewing angle first surface mirror 2\" star diagonal with 1.25\" eyepiece adapter. The diagonal uses durable 99% reflectivity for maximum light transmission and long life.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFinderscope:\u003c\/strong\u003e 8 x 50mm straight-through achromatic design, in a dual-ring six-point adjustment bracket with a quick release mounting shoe. Focuses by loosening the trim ring behind the objective lens cell, screwing the lens cell in or out to focus, and tightening the trim ring to lock in the correct focus.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDovetail and tube rings:\u003c\/strong\u003e The optical tube comes with two split and hinged tube rings for installing the optical tube on your mount. The rings are connected to a dovetail mounting plate that slips into the industry standard Vixen-style dovetail groove on altazimuth and equatorial mounts from Astro-Tech, Explore Scientific, Celestron, iOptron, and others. A carrying handle is conveniently fitted to the top of the tube rings.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eExtended lifetime warranty:\u003c\/strong\u003e This individually serial numbered Explore Scientific telescope is backed by a limited one year warranty, which will be extended to an Explore Scientific transferable Life of the Product Limited Warranty when its warranty card is registered with Explore Scientific within 60 days of purchase.\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003eTech Details:\u003c\/h2\u003e\n\u003ctable id=\"product-attribute-specs-table\" class=\"table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eAperture\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e4\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBinary and Star Cluster Observation\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eVery Good\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Length\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e663mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Ratio\u003c\/th\u003e\n\u003ctd class=\"data\"\u003ef\/6.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGalaxy and Nebula Observation\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eFair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeaviest Single Component\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1.3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHighest Useful Magnification\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e166x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLunar Observation\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eGreat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e11.3 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePlanetary Observation\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eVery Good\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eResolution\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1.14 arc seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eVisual Limiting Magnitude\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e12.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eLimited Lifetime\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40481972518985,"sku":"ES102D","price":499.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/19782.jpg?v=1675378869"},{"product_id":"explore-scientific-ar127-5-f-6-5-achromatic-doublet-refractor","title":"Explore Scientific AR127 5\" f\/6.5 Achromatic Doublet Refractor Optical Tube","description":"\u003cp\u003eThis 5\" Explore Scientific achromatic refractor optical tube is a big performer, both inside the solar system and out in the realm of the nebulas and galaxies, at a not so very big price.\u003c\/p\u003e\n\u003cdiv class=\"heading\"\u003e\u003cstrong\u003eThis 5\" Explore Scientific ES127D achromatic doublet refractor has:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"heading\"\u003e\n\u003cul\u003e\n\u003cli\u003eBig 5\" aperture fully multicoated achromatic doublet refractor optics\u003c\/li\u003e\n\u003cli\u003eCollimatable objective lens cell for fine-tuning the images\u003c\/li\u003e\n\u003cli\u003eBig 8 x 50mm finderscope\u003c\/li\u003e\n\u003cli\u003e2\" dielectric star diagonal with 1.25\" eyepiece adapter\u003c\/li\u003e\n\u003cli\u003eTube rings with carry handle and Vixen-style dovetail plate\u003c\/li\u003e\n\u003cli\u003eExtended lifetime transferrable warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003eThis highly portable 5\" Explore Scientific ES127D achromatic doublet refractor optical tube (only 35\" long, with a weight of 15 pounds) is an exceptional value. It has a 127mm (5\") diameter multicoated doublet objective lens (825mm focal length f\/6.5). Its diffraction limited optics are sharp and well suited to serious deep space observing of binary stars, star clusters, and the brighter nebulas and galaxies, in addition to excellent high contrast planetary and lunar images. The objective lens cell is fully collimatable, so you can optimize your image quality.\u003c\/p\u003e\n\u003cp\u003eThe 5\" Explore Scientific ES127D is a great grab-and-go scope for quick looks at the sky when mounted on a suitable altazimuth mount. It's good enough optically to be the heart of a reasonably-priced serious observing system when mounted on one of the many equatorial mounts and go-to altazimuth mounts from Celestron, iOptron, and others.\u003c\/p\u003e\n\u003cp\u003eSome chromatic aberration is visible on stars and objects of 2nd or 3rd magnitude and brighter, as you would expect in an achromatic refractor with such a fast focal ratio. However, the spurious color is well controlled and not unreasonable, thanks to careful optical design, and has little effect on deep space observing. Most observers feel the relatively limited amount of chromatic aberration visible is a small price to pay for the scope's many other virtues of portability, sharpness, contrast, and optical clarity.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures of This Optical Tube . . .\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAchromatic refractor optics:\u003c\/strong\u003e 5\" (127mm) aperture, 825mm focal length, f\/6.5 air-spaced crown and flint glass doublet lens. Tube diameter is 5.13\" (130.4mm) and the tube length with dew shield installed is 34\" (864mm). Scope weight is 15 pounds (6.82 kg).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCollimatable lens cell:\u003c\/strong\u003e The 5\" Explore Scientific lens is precision collimated at the factory to give optimum performance. Although you may never need to adjust optical alignment, the ES127D allows for collimating the lens set should the telescope ever require it due to a fall or very rough handling.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMulticoated optics:\u003c\/strong\u003e Fully coated on all surfaces with multiple layers of antireflection materials for high light transmission and good contrast.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInternal light baffles:\u003c\/strong\u003e Multiple internal knife-edge baffles in the optical tube mask and deflect unwanted stray light for improved contrast.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDew shield:\u003c\/strong\u003e The removable dew shield slows the formation of dew on the lens in cold weather to extend your undisturbed observing time. It also improves visual and photographic contrast by shielding the lens from off-axis ambient light (the neighbor's yard light, moonlight, etc.)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDust covers:\u003c\/strong\u003e Front and rear dust covers are provided.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual-speed Crayford-style focuser:\u003c\/strong\u003e 2\" focuser, with adjustable tension and lock knobs. The 2\" eyepiece holder uses a non-marring brass compression ring to hold the supplied 2\" star diagonal in place without scratching the diagonal barrel. The precision-made 2\" focuser has dual-speed focusing. There are two coarse focusing knobs. The right knob also has a smaller concentric knob with 10:1 ratio reduction gear microfine focusing. This provides exceptionally precise image control during high power visual observing or critical DSLR or CCD imaging. The focus knobs have ribbed gripping surfaces so they are easy to operate, even while wearing gloves or mittens in cold weather.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDielectric star diagonal:\u003c\/strong\u003e 90° viewing angle first surface mirror 2\" star diagonal with 1.25\" eyepiece adapter. The diagonal uses durable 99% reflectivity for maximum light transmission and long life.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFinderscope:\u003c\/strong\u003e 8 x 50mm straight-through achromatic design, in a dual-ring six-point adjustment bracket with a quick release mounting shoe. Focuses by loosening the trim ring behind the objective lens cell, screwing the lens cell in or out to focus, and tightening the trim ring to lock in the correct focus.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRings and dovetail tube mount:\u003c\/strong\u003e The optical tube comes with two split and hinged tube rings for installing the optical tube on your mount. The rings are connected to a dovetail mounting plate that slips into the standard dovetail groove on Astro-Tech Voyager, Explore Scientific, Celestron, and iOptron mounts, among others. A carrying handle is conveniently fitted to the top of the tube rings\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eExtended lifetime warranty:\u003c\/strong\u003e This individually serial numbered Explore Scientific telescope is backed by a limited one year warranty, which will be extended to an Explore Scientific transferable Life of the Product limited warranty when its warranty card is registered with Explore Scientific within 60 days of purchase.\u003c\/p\u003e\n\u003ch2\u003eTech Details: \u003c\/h2\u003e\n\u003ctable class=\"table\" id=\"product-attribute-specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eAperture\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e5\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBinary and Star Cluster Observation\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eVery Good\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Length\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e825mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Ratio\u003c\/th\u003e\n\u003ctd class=\"data\"\u003ef\/6.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGalaxy and Nebula Observation\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHighest Useful Magnification\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e236x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLunar Observation\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eGreat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e15 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePlanetary Observation\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eVery Good\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eResolution\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e0.91 arc seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTelescope Type\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eRefractor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eVisual Limiting Magnitude\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e13\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eLimited Lifetime\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003eSupplied Accessories: \u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDual tube rings with Vixen-style dovetail and carry handle\u003c\/li\u003e\n\u003cli\u003e8 x 50mm straight-through finderscope\u003c\/li\u003e\n\u003cli\u003e2\" dual speed Crayford focuser\u003c\/li\u003e\n\u003cli\u003e2\" dielectric star diagonal with 2\" and 1.25\" brass compression ring eyepiece holders\u003c\/li\u003e\n\u003cli\u003eRemovable dew shield\u003c\/li\u003e\n\u003cli\u003eDust covers\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40481972617289,"sku":"ES127D","price":749.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/19920.jpg?v=1675378875"},{"product_id":"explore-scientific-ar152-6-f-6-5-achromatic-doublet-refractor-optical-tube","title":"Explore Scientific AR152 6\" f\/6.5 Achromatic Doublet Refractor Optical Tube","description":"\u003cp\u003eThis 6\" Explore Scientific AR152 achromatic refractor optical tube is a sensational value - a big 6\" (152mm) and fast f\/6.5 refractor that's priced like an 80mm scope.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThis Explore Scientific AR152 6\" achromatic refractor has:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ebig 6\" aperture fully multicoated achromatic doublet refractor optics\u003c\/li\u003e\n\u003cli\u003ecollimatable objective lens cell for fine-tuning the images\u003c\/li\u003e\n\u003cli\u003edual-speed 2\" Crayford focuser with 10:1 ratio fine focusing \u003c\/li\u003e\n\u003cli\u003e2\" dielectric star diagonal with 2\" and 1.25\" brass compression ring eyepiece holders\u003c\/li\u003e\n\u003cli\u003ebig 8 x 50mm finderscope\u003c\/li\u003e\n\u003cli\u003etube rings with carry handle and Vixen-style dovetail plate\u003c\/li\u003e\n\u003cli\u003ebright high contrast deep space views, plus excellent performance inside the solar system\u003c\/li\u003e\n\u003cli\u003eextended lifetime warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis large aperture 6\" Explore Scientific ES152D achromatic doublet refractor optical tube is a big scope (41\" long, with a weight of 23.5 pounds), with big performance to match. It has a 152mm (6\") diameter multicoated doublet objective lens (988mm focal length f\/6.5) that gathers 44% more light than a 5\" scope. Its diffraction limited optics are sharp and well suited to serious deep space observing of binary stars, star clusters, and faint nebulas and galaxies, in addition to excellent high contrast planetary and lunar images. The objective lens cell is fully collimatable, so you can optimize your image quality.\u003c\/p\u003e\n\u003cp\u003eThe 6\" Explore Scientific ES152D is good enough optically to be the heart of a reasonably-priced serious observing system when mounted on one of the many equatorial mounts and go-to altazimuth mounts from Celestron, Meade, iOptron, and others.\u003c\/p\u003e\n\u003cp\u003eSome chromatic aberration is visible on stars and objects of 2nd or 3rd magnitude and brighter, as you would expect in a big achromatic refractor with such a fast focal ratio. However, the spurious color is well controlled and not unreasonable, thanks to careful optical design, and has little effect on deep space observing. Most observers feel the relatively limited amount of chromatic aberration visible is a small price to pay for the scope's many other virtues of portability, sharpness, contrast, and optical clarity.\u003c\/p\u003e\n\u003cp style=\"font-weight: bold;\"\u003e\u003cstrong\u003eDetails About This Optical Tube . . . \u003c\/strong\u003e\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong style=\"font-weight: bold;\"\u003eAchromatic refractor optics: \u003c\/strong\u003e6\" (152mm) aperture, 988mm focal length, f\/6.5 air-spaced crown and flint glass doublet lens. Tube diameter is 6.21\" (157.7mm) and the tube length with dewshield installed is 41\" (1041mm). Scope weight is 23.5 pounds (10.7 kg).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"font-weight: bold;\"\u003eCollimatable lens cell: \u003c\/strong\u003eThe 6\" Explore Scientific lens is precision collimated at the factory to give optimum performance. Although you may never need to adjust optical alignment, the ES152D allows for collimating the lens set should the telescope ever require it due to a fall or very rough handling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"font-weight: bold;\"\u003eMulticoated optics: \u003c\/strong\u003eFully coated on all surfaces with multiple layers of antireflection materials for high light transmission and good contrast.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"font-weight: bold;\"\u003eInternal light baffles: \u003c\/strong\u003eMultiple internal knife-edge baffles in the optical tube mask and deflect unwanted stray light for improved contrast.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"font-weight: bold;\"\u003eDew shield: \u003c\/strong\u003eThe removable dew shield slows the formation of dew on the lens in cold weather to extend your undisturbed observing time. It also improves visual and photographic contrast by shielding the lens from off-axis ambient light (the neighbor's yard light, moonlight, etc.)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"font-weight: bold;\"\u003eDust covers: \u003c\/strong\u003eFront and rear dust covers are provided.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"font-weight: bold;\"\u003eDual-speed Crayford-style focuser: \u003c\/strong\u003e2\" focuser, with adjustable tension and lock knobs. The 2\" eyepiece holder uses a non-marring brass compression ring to hold the supplied 2\" star diagonal in place without scratching the diagonal barrel. The precision-made 2\" focuser has dual-speed focusing. There are two coarse focusing knobs. The right knob also has a smaller concentric knob with 10:1 ratio reduction gear microfine focusing. This provides exceptionally precise image control during high power visual observing or critical DSLR or CCD imaging. The focus knobs have ribbed gripping surfaces so they are easy to operate, even while wearing gloves or mittens in cold weather.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"font-weight: bold;\"\u003eDielectric star diagonal: \u003c\/strong\u003e90° viewing angle first surface mirror 2\" star diagonal with 1.26\" eyepiece adapter. The diagonal uses durable 99% reflectivity for maximum light transmission and long life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"font-weight: bold;\"\u003eFinderscope:\u003c\/strong\u003e 8 x 50mm straight-through achromatic design, in a dual-ring six-point adjustment bracket with a quick release mounting shoe. Focuses by loosening the trim ring behind the objective lens cell, screwing the lens cell in or out to focus, and tightening the trim ring to lock in the correct focus.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"font-weight: bold;\"\u003eDovetail tube mount: \u003c\/strong\u003eThe optical tube comes with two split and hinged tube rings for installing the optical tube on your mount. The rings are connected to a dovetail mounting plate that slips into the standard dovetail groove on Explore Scientific, Celestron, Meade LX80, Vixen, and similar mounts. A carrying handle is conveniently fitted to the top of the tube rings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong style=\"font-weight: bold;\"\u003eExtended lifetime warranty: \u003c\/strong\u003eThis individually serial numbered Explore Scientific telescope is backed by a limited one year warranty, which will be extended to an Explore Scientific \u003cem\u003etransferable product lifetime\u003c\/em\u003e limited warranty when its warranty card is registered with Explore Scientific within 60 days of purchase. Full details on this \u003ca href=\"https:\/\/www.astronomics.com\/explore-scientific-warranty-information_t.aspx\"\u003eunique transferable lifetime warranty\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTech Details: \u003c\/h2\u003e\n\u003ctable class=\"table\" id=\"product-attribute-specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eAperture\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e6\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBinary and Star Cluster Observation\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eGreat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Length\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e988mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Ratio\u003c\/th\u003e\n\u003ctd class=\"data\"\u003ef\/6.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGalaxy and Nebula Observation\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHighest Useful Magnification\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e282x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLunar Observation\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eGreat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e23.5 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePlanetary Observation\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eGreat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eResolution\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e0.76 arc seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTelescope Type\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eRefractor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eVisual Limiting Magnitude\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e13.4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eLimited Lifetime\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003eSupplied Accessories: \u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDual tube rings with Vixen-style dovetail and carry handle\u003c\/li\u003e\n\u003cli\u003e8 x 50mm straight-through finderscope\u003c\/li\u003e\n\u003cli\u003e2\" dual speed Crayford focuser\u003c\/li\u003e\n\u003cli\u003e2\" dielectric star diagonal with 2\" and 1.26\" brass compression ring eyepiece holders\u003c\/li\u003e\n\u003cli\u003eRemovable dew shield\u003c\/li\u003e\n\u003cli\u003eDust covers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/blockquote\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40481972682825,"sku":"ES152D","price":849.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/19921.jpg?v=1675378876"},{"product_id":"explore-scientific-30mm-100-field-argon-purged-waterproof-3-eyepiece","title":"Explore Scientific 30mm 100° Field Argon-Purged Waterproof 3\" Eyepiece","description":"\u003cp\u003eThe 100° apparent field of the Explore Scientific 30mm waterproof 3\" eyepiece provides superb maximum field\/medium to medium-low power observing in all scopes capable of handling this massive 5.2 pound eyepiece .\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eExplore Ultra-Wide Eyepieces - Comfort, Quality, Value. The Explore Scientific 100° Series eyepieces are hyper-wide class oculars that can transform your visual astronomy experience. You may be startled at the amazingly wide expanse of inky black sky you behold the first time you bring your eye to a 100° Series eyepiece, and after awhile, you may even forget that you have an eyepiece between you and the universe! With an apparent field of view that is close to the maximum for hyper-wide eyepiece design, objects are not only easier to locate, but for non-driven telescopes the object will stay in the field of view for a very long time before any adjustments need to be made.\u003c\/p\u003e\n\u003cp\u003eAnother great benefit of hyper-wide eyepieces is the ease with which you can gaze, not directly at an object, but slightly to either side. This skill, called using averted vision, is especially helpful when observing faint objects, because using averted vision puts the image on a part of your eye that is more sensitive to light, allowing you to see fainter images.\u003c\/p\u003e\n\u003ch2\u003eTech Details:\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e30mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e200mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWidth\u003c\/td\u003e\n\u003ctd\u003e107mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e82.9oz; 2353g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBarrel Size\u003c\/td\u003e\n\u003ctd\u003e3.00\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEye Relief\u003c\/td\u003e\n\u003ctd\u003e19mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eField Stop Diameter\u003c\/td\u003e\n\u003ctd\u003e52.2mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003eTech Details: \u003c\/h2\u003e\n\u003ctable id=\"product-attribute-specs-table\" class=\"table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBarrel Size\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e3\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEye Relief\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e19mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eField of view\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Length\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e30mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of optical elements\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e5.2 lbs.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1 year, extendable to lifetime\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40481973731401,"sku":"ES30100","price":999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/20033.jpg?v=1675378945"},{"product_id":"explore-scientific-16mm-68-field-argon-purged-waterproof-1-25-eyepiece","title":"Explore Scientific 16mm 68° Field Argon-Purged Waterproof 1.25\" Eyepiece","description":"\u003cp\u003eThis Explore Scientific 16mm argon-purged eyepiece is a truly fine medium power eyepiece with a substantial 68° field of view that can provide a comfortable \"picture window onto space\" viewing experience with virtually any telescope type.\u003c\/p\u003e\n\u003cp\u003eThis new 68° 16mm Explore Scientific is an excellent medium power wide field eyepiece with an unusual benefit. It is O-ring sealed and argon-purged to be 100% waterproof. This prevents internal fogging in the eyepiece; keeps the interior dust-and fungus-free; and makes it easier to clean, as there is no risk of excess cleaning solution getting trapped between the lenses.\u003c\/p\u003e\n\u003cp\u003eMany observers feel that a 68° field eyepiece like this Explore Scientific hits the \"sweet spot\" between the affordable, but \"looking down a tube\" view of 45°-50° field eyepieces, and the \u003cem\u003efull-immersion, \u003c\/em\u003ebut very expensive, observing experience of an ultra-wide field 82° or 100° eyepiece.\u003c\/p\u003e\n\u003cp\u003eThe 16mm 68° Explore Scientific works with any telescope from a fast focal ratio reflector to a long focal length refractor. It's particularly good with Dobsonians and fast focal ratio refractors, providing high magnification with a very wide field of view for observing globular clusters and compact nebulas. It provides a substantial 0.95° field of view (nearly twice the diameter of the full Moon) and a bright 3.55mm exit pupil with a 10\" f\/4.5 Dobsonian at 71x. \u003c\/p\u003e\n\u003cp\u003eThe eye relief of this six lens\/fully multicoated optical system is an acceptable 12mm. The field is vignetted somewhat for those with severe astigmatism who \u003cem\u003emust \u003c\/em\u003ewear eyeglasses while observing, but markedly less so than with many competitive eyepieces. The eyepiece has a soft fold-down rubber eyecup and comes with dust covers for both ends of the eyepiece.\u003c\/p\u003e\n\u003cp\u003eThis individually serial numbered Explore Scientific eyepiece is backed by a limited one year warranty, which will be extended to an Explore Scientific \u003cem\u003etransferable lifetime limited warranty \u003c\/em\u003ewhen its warranty card is registered with Explore Scientific within 60 days of purchase. Here's a link to the full details on this \u003ca href=\"https:\/\/www.astronomics.com\/explore-scientific-warranty-information_t.aspx\"\u003eunique transferable lifetime warranty\u003c\/a\u003e\u003c\/p\u003e\n\u003ch2\u003eTech Details: \u003c\/h2\u003e\n\u003ctable id=\"product-attribute-specs-table\" class=\"table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBarrel Size\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEye Relief\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e12mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eField of view\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e68\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Length\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e16mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of optical elements\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e5.6 oz.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1 year, extendable to lifetime\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40481975992393,"sku":"ES6816A","price":109.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/files\/16_1200x1200_e96b33c3-4913-45b4-acc7-3394ac393412.webp?v=1722009800"},{"product_id":"explore-scientific-20mm-68-field-argon-purged-waterproof-1-25-eyepiece","title":"Explore Scientific 20mm 68° Field Argon-Purged Waterproof 1.25\" Eyepiece","description":"\u003cp\u003eThis Explore Scientific 20mm argon-purged waterproof eyepiece is a fine medium power 1.25\" eyepiece whose substantial 68° field of view gives you \"big picture\" deep space performance with virtually any telescope type.\u003c\/p\u003e\n\u003cp\u003eThis new 68° 20mm Explore Scientific is an excellent medium power wide field eyepiece with an unusual benefit. It is O-ring sealed and argon-purged to be 100% waterproof. This prevents internal fogging in the eyepiece; keeps the interior dust-and fungus-free; and makes it easier to clean, as there is no risk of excess cleaning solution getting trapped between the lenses.\u003c\/p\u003e\n\u003cp\u003eMany observers feel that a 68° field eyepiece like this Explore Scientific hits the \"sweet spot\" between the affordable, but \"looking down a tube\" view of conventional 45°-50° field eyepieces, and the \u003cem\u003efull-immersion, \u003c\/em\u003ebut very expensive, observing experience of an ultra-wide field 82° or 100° eyepiece.\u003c\/p\u003e\n\u003cp\u003eThe 20mm 68° Explore Scientific works with any telescope from a fast focal ratio reflector to a long focal length refractor. It provides a substantial 1.19° field of view (almost two and a half times the diameter of the full Moon) and a bright 3.64mm exit pupil with a 10\" f\/4.5 Dobsonian at 57x. This gives you about four minutes and forty-five seconds with such a scope to observe an object as it drifts from one side of the eyepiece's flat field to the other. That's plenty of time for multiple observers to look at the object or for you to absorb as much detail as possible before having to reposition your scope. \u003c\/p\u003e\n\u003cp\u003eThe eye relief of this six lens\/fully multicoated optical system is a respectable 15mm, so observers who \u003cem\u003emust \u003c\/em\u003ewear eyeglasses when observing will see an almost unvignetted field of view. The eyepiece has a soft fold-down rubber eyecup and comes with dust covers for both ends of the eyepiece.\u003c\/p\u003e\n\u003cp\u003eThis individually serial numbered Explore Scientific eyepiece is backed by a limited one year warranty, which will be extended to an Explore Scientific \u003cem\u003etransferable lifetime limited warranty \u003c\/em\u003ewhen its warranty card is registered with Explore Scientific within 60 days of purchase. Here's a link to the full details on this \u003ca href=\"https:\/\/www.astronomics.com\/explore-scientific-warranty-information_t.aspx\"\u003eunique transferable lifetime warranty\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eTech Details: \u003c\/h2\u003e\n\u003ctable class=\"table\" id=\"product-attribute-specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBarrel Size\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEye Relief\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e15mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eField of view\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e68\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Length\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e20mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of optical elements\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e8.8 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1 year, extendable to lifetime\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40481976025161,"sku":"ES6820A","price":109.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/files\/20_1200x1200_84a7523a-ff1d-4492-8801-e3775dc4a1eb.webp?v=1722011772"},{"product_id":"explore-scientific-24mm-68-field-argon-purged-waterproof-1-25-eyepiece","title":"Explore Scientific 24mm 68° Field Argon-Purged Waterproof 1.25\" Eyepiece","description":"\u003cp\u003eThis Explore Scientific 24mm argon-purged eyepiece has a wide 68° field that gives impressively sharp and contrasty medium power images with virtually any telescope, from short focal length refractor to long focal length Maksutov.\u003c\/p\u003e\n\u003cp\u003eThis new 68° 24mm Explore Scientific is an excellent low to medium power wide field eyepiece with an unusual benefit. It is O-ring sealed and argon-purged to be 100% waterproof. This prevents internal fogging in the eyepiece; keeps the interior dust-and fungus-free; and makes it easier to clean, as there is no risk of excess cleaning solution getting trapped between the lenses.\u003c\/p\u003e\n\u003cp\u003eMany observers feel that a 68° field eyepiece like this Explore Scientific hits the \"sweet spot\" between the affordable, but \"looking down a tube\" view of conventional 45°-50° field eyepieces, and the \u003cem\u003efull-immersion, \u003c\/em\u003ebut very expensive, observing experience of an ultra-wide field 82° or 100° eyepiece.\u003c\/p\u003e\n\u003cp\u003eWhile the 24mm Explore Scientific is particularly well-suited to observing with Dobsonian reflectors and fast focal ratio refractors (it provides a big 5.3mm exit pupil for rich field observing on an f\/4.5 Dobsonian, for example), it provides \"picture window onto space\" images with any telescope type and is a superb eyepiece to replace the so-so 25mm or 26mm that is usually supplied as standard equipment with many new scopes.\u003c\/p\u003e\n\u003cp\u003eFor example, it will give you a 1.43° field at 48x with a 10\" f\/4.5 Dobsonian, more than enough to take in all of the Pleiades at one time. This gives you over five and a half minutes of uninterrupted observing with such a scope while an object drifts from one side of the eyepiece's flat field to the other. That's plenty of time for multiple observers to look at the same object, or for you to absorb as much detail as possible, before having to reposition the scope.\u003c\/p\u003e\n\u003cp\u003eThe eye relief of this six lens\/fully multicoated optical system is 18mm, foe essentially unvignetted views for those with severe astigmatism who \u003cem\u003emust \u003c\/em\u003ewear eyeglasses while observing. The eyepiece has a soft fold-down rubber eyecup and comes with dust covers for both ends of the eyepiece.\u003c\/p\u003e\n\u003cp\u003eThis is an excellent eyepiece for observing galaxy clusters, framing emission nebulas with the black of space, observing the nebulosity around the Pleiades, etc. The 24mm Explore Scientific waterproof would be a welcome addition to any serious deep space observer's eyepiece collection.\u003c\/p\u003e\n\u003cp\u003eThis individually serial numbered Explore Scientific eyepiece is backed by a limited one year warranty, which will be extended to an Explore Scientific \u003cem\u003etransferable lifetime limited warranty \u003c\/em\u003ewhen its warranty card is registered with Explore Scientific within 60 days of purchase. Here's a link to the full details on this \u003ca href=\"https:\/\/www.astronomics.com\/explore-scientific-warranty-information_t.aspx\"\u003eunique transferable lifetime warranty\u003c\/a\u003e\u003c\/p\u003e\n\u003ch2\u003eTech Details: \u003c\/h2\u003e\n\u003ctable id=\"product-attribute-specs-table\" class=\"table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBarrel Size\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEye Relief\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e18mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eField of view\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e68\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Length\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e24mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of optical elements\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e11.2 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1 year, extendable to lifetime\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40481976057929,"sku":"ES6824A","price":109.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/files\/24_1200x1200_3828239b-d1f0-409f-9909-0182b52a806f.webp?v=1722012250"},{"product_id":"explore-scientific-28mm-68-field-argon-purged-waterproof-2-eyepiece","title":"Explore Scientific 28mm 68° Field Argon-Purged Waterproof 2\" Eyepiece","description":"\u003cp\u003eThis Explore Scientific 28mm argon-purged is a substantial 2\" eyepiece that gives impressively sharp and contrasty wide field views of nebulas, compact open clusters, globular clusters, etc. with virtually any telescope that can use 2\" eyepieces.\u003c\/p\u003e\n\u003cp\u003eThis new 68° 28mm Explore Scientific is a high-quality low to medium power wide field 2\" eyepiece with an unusual benefit. It is O-ring sealed and argon-purged to be 100% waterproof. This prevents internal fogging in the eyepiece; keeps the interior dust-and fungus-free; and makes it easier to clean, as there is no risk of excess cleaning solution getting trapped between the lenses.\u003c\/p\u003e\n\u003cp\u003eMany observers feel that a 68° field eyepiece like this Explore Scientific hits the \"sweet spot\" between the affordable, but \"looking down a tube\" view of conventional 45°-50° field eyepieces, and the \u003cem\u003efull-immersion, \u003c\/em\u003ebut very expensive, observing experience of an ultra-wide field 82° or 100° eyepiece.\u003c\/p\u003e\n\u003cp\u003eThe 2\" 28mm Explore Scientific is designed for the serious deep space explorer - no matter what your telescope type. The calculator in the \"formula\" tab above will show you just how wide the field will be with your particular telescope. For example, the 28mm Explore Scientific will give you a 0.95 degree field at 71x with the 2000mm focal length of either a \u003cem\u003ebig \u003c\/em\u003e17.5\" f\/4.5 Dobsonian or an 8\" f\/10 Schmidt-Cassegrain. That's almost two lunar diameters and is ideal for observing emission and reflection nebulas and nebula remnants.\u003c\/p\u003e\n\u003cp\u003eWhile it's particularly well-suited for use with Dobsonians (it provides a huge 6.2mm exit pupil for rich field observing on an f\/4.5 scope, close to the maximum usable), it can provide \"picture window onto space\" images with any telescope that can use a 2\" eyepiece. With a short focal length refractor such as the TeleVue TV-85, for example, it will give you a huge 3.17° field at 21x. This eyepiece would be a welcome addition to any serious eyepiece collection.\u003c\/p\u003e\n\u003cp\u003eThe eye relief of this six lens\/fully multicoated is an excellent 22mm. That means that this 28mm Explore Scientific can be used by most eyeglass wearers with no vignetting of the field of view. The eyepiece has a soft fold-down rubber eyecup and comes with dust covers for both ends of the eyepiece.\u003c\/p\u003e\n\u003cp\u003eThis individually serial numbered Explore Scientific eyepiece is backed by a limited one year warranty, which will be extended to an Explore Scientific \u003cem\u003etransferable lifetime limited warranty \u003c\/em\u003ewhen its warranty card is registered with Explore Scientific within 60 days of purchase. Here's a link to the full details on this \u003ca href=\"https:\/\/www.astronomics.com\/explore-scientific-warranty-information_t.aspx\"\u003eunique transferable lifetime warranty\u003c\/a\u003e\u003c\/p\u003e\n\u003ch2\u003eTech Details: \u003c\/h2\u003e\n\u003ctable id=\"product-attribute-specs-table\" class=\"table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBarrel Size\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEye Relief\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e22mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eField of view\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e68\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Length\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e28mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of optical elements\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e16 oz.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1 year, extendable to lifetime\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40481976090697,"sku":"ES6828A","price":169.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/files\/28_1200x1200_31d33f31-89fb-4914-940c-21ae972cee3f.webp?v=1722013098"},{"product_id":"explore-scientific-34mm-68-field-argon-purged-waterproof-2-eyepiece","title":"Explore Scientific 34mm 68° Field Argon-Purged Waterproof 2\" Eyepiece","description":"\u003cp\u003eThis Explore Scientific 34mm argon-purged 2\" is a big eyepiece - big in size, big in weight, big in field of view, big in performance. It gives you impressively sharp high contrast images with virtually any telescope with a focal ratio of f\/5 and above that uses 2\" eyepieces.\u003c\/p\u003e\n\u003cp\u003eThis new 68° 34mm Explore Scientific is a high-quality and physically-impressive low power wide field 2\" eyepiece for the serious deep space explorer. It comes with an unusual benefit. It is O-ring sealed and argon-purged to be 100% waterproof. This prevents internal fogging in the eyepiece; keeps the interior dust-and fungus-free; and makes it easier to clean, as there is no risk of excess cleaning solution getting trapped between the lenses.\u003c\/p\u003e\n\u003cp\u003eMany observers feel that a 68° field eyepiece like this Explore Scientific hits the \"sweet spot\" between the affordable, but \"looking down a tube\" view of conventional 45°-50° field eyepieces, and the \u003cem\u003efull-immersion, \u003c\/em\u003ebut very expensive, observing experience of an ultra-wide field 82° or 100° eyepiece.\u003c\/p\u003e\n\u003cp\u003eThe 2\" 34mm Explore Scientific is ideal for observing galaxy clusters, large emission and reflection nebulas, and nebula remnants. - no matter what your telescope type, as long as your telescope has a focal ratio of f\/5 and longer. A shorter focal ratio will waste some of your scope's light gathering capacity when used with the 34mm Explore Scientific.\u003c\/p\u003e\n\u003cp\u003eFor example, an f\/4.5 Dobsonian reflector will have a huge 7.55mm exit pupil with this 34mm eyepiece, a larger light cone than your eye can probably dilate to accept. Some of the scope's light will therefore fall on your iris instead of entering your eye, wasting the light. If your scope's focal ratio is f\/5 or above, however, this 34mm Explore Scientific can give you some truly excellent \"big picture\" views of deep space. \u003c\/p\u003e\n\u003cp\u003eWith a huge 26mm of usable eye relief, the six lens\/fully multicoated 34mm Explore Scientific can be used by eyeglass wearers with no vignetting of the field. The eyepiece has a soft fold-down rubber eyecup and comes with dust covers for both ends of the eyepiece.\u003c\/p\u003e\n\u003cp\u003eThis individually serial numbered Explore Scientific eyepiece is backed by a limited one year warranty, which will be extended to an Explore Scientific \u003cem\u003etransferable lifetime limited warranty \u003c\/em\u003ewhen its warranty card is registered with Explore Scientific within 60 days of purchase. Here's a link to the full details on this \u003ca href=\"https:\/\/www.astronomics.com\/explore-scientific-warranty-information_t.aspx\"\u003eunique transferable lifetime warranty\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eTech Details: \u003c\/h2\u003e\n\u003ctable id=\"product-attribute-specs-table\" class=\"table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBarrel Size\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEye Relief\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e26mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eField of view\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e68\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Length\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e34mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of optical elements\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e24 oz.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1 year, extendable to lifetime\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40481976123465,"sku":"ES6834A","price":219.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/files\/34_1200x1200_d0e31417-c4ad-49ef-80e9-4e2037363dbe.webp?v=1722016008"},{"product_id":"explore-scientific-40mm-68-field-argon-purged-waterproof-2-eyepiece","title":"Explore Scientific 40mm 68° Field Argon-Purged Waterproof 2\" Eyepiece","description":"\u003cp\u003eIf you have room in your observing kit for only one long focal length wide angle eyepiece, this Explore Scientific 40mm argon-purged eyepiece may well be the one eyepiece for you.\u003c\/p\u003e\n\u003cp\u003eThis new 68° 40mm Explore Scientific is a high-quality and physically-impressive low power wide field 2\" eyepiece for the serious deep space explorer. It comes with an unusual benefit. It is O-ring sealed and argon-purged to be 100% waterproof. This prevents internal fogging in the eyepiece; keeps the interior dust-and fungus-free; and makes it easier to clean, as there is no risk of excess cleaning solution getting trapped between the lenses.\u003c\/p\u003e\n\u003cp\u003eMany observers feel that a 68° field eyepiece like this Explore Scientific hits the \"sweet spot\" between the affordable, but \"looking down a tube\" view of conventional 45°-50° field eyepieces, and the \u003cem\u003efull-immersion, \u003c\/em\u003ebut very expensive, observing experience of an ultra-wide field 82° or 100° eyepiece.\u003c\/p\u003e\n\u003cp\u003eBecause of its long focal length, the 2\" 40mm Explore Scientific is at its best with telescopes having a focal ratio of f\/6 or longer (an f\/6 scope gives it a 6.67mm exit pupil, about the largest most observers can fully utilize). A shorter focal ratio will waste some of your scope's light gathering capacity when used with the 40mm Explore Scientific. If your scope's focal ratio is f\/6 or above, however, this wide field eyepiece can give you some truly excellent \"big picture\" views of deep space. It is ideal for observing galaxy clusters, large emission and reflection nebulas, and nebula remnants - no matter what your telescope type, as long as your telescope has a focal ratio of f\/6 and longer. You can use the calculator in the \"formula\" tabe above to see just how wide the field will be with your particular scope.\u003c\/p\u003e\n\u003cp\u003eWith a huge 31mm of usable eye relief, the six lens\/fully multicoated 40mm Explore Scientific can be used by eyeglass wearers with no vignetting of the field. The eyepiece has a soft fold-down rubber eyecup and comes with dust covers for both ends of the eyepiece.\u003c\/p\u003e\n\u003cp\u003eThis individually serial numbered Explore Scientific eyepiece is backed by a limited one year warranty, which will be extended to an Explore Scientific \u003cem\u003etransferable lifetime limited warranty \u003c\/em\u003ewhen its warranty card is registered with Explore Scientific within 60 days of purchase. Here's a link to the full details on this \u003ca href=\"https:\/\/www.astronomics.com\/explore-scientific-warranty-information_t.aspx\"\u003eunique transferable lifetime warranty\u003c\/a\u003e\u003c\/p\u003e\n\u003ch2\u003eTech Details: \u003c\/h2\u003e\n\u003ctable class=\"table\" id=\"product-attribute-specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBarrel Size\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEye Relief\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e31mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eField of view\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e68\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Length\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e40mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of optical elements\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e34.4 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1 year, extendable to lifetime\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40481976156233,"sku":"ES6840A","price":309.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/files\/40_1200x1200_b1453953-28cc-4573-8359-0ef1db8fa4c8.webp?v=1722018619"},{"product_id":"explore-scientific-11mm-82-field-argon-purged-waterproof-1-25-eyepiece","title":"Explore Scientific 11mm 82° Field Argon-Purged Waterproof 1.25\" Eyepiece","description":"\u003cp\u003eThe \"picture window on space\" viewing experience of this 82° field Explore Scientific 11mm 1.25\" argon-purged eyepiece gives you the magnification you want, without cramping your field of view like an ordinary high power eyepiece.\u003c\/p\u003e\n\u003cp\u003eThis 11mm Explore Scientific is an exceptional medium high power\/ultra wide field eyepiece that's great for resolving globular clusters, picking up detail in smaller galaxies, investigating the Moon and planets in depth, and more. It works with any type of telescope, from a fast focal ratio Dobsonian reflector to a long focal ratio achromatic refractor or Maksutov. The wide field of the 11mm Explore Scientific makes observing through it feel like you're gazing serenely through a \"picture window on space\" rather than squinting through an eyepiece. It provides an almost ideal match of an 8\" f\/10 Schmidt-Cassegrain's resolving power to the resolving power of your eye, for maximum lunar and planetary detail.\u003c\/p\u003e\n\u003cp\u003eIn addition to its wide, wide field the 11mm 82° Explore Scientific comes with another very useful benefit. It is O-ring sealed and argon-purged to be 100% waterproof. This prevents internal fogging in the eyepiece; keeps the interior dust-and fungus-free; and makes it easier to clean, as there is no risk of excess cleaning solution getting trapped between the lenses.\u003c\/p\u003e\n\u003cp\u003eThe latest computer design programs have been used to optimize its performance. Its seven element\/four group design uses low dispersion and high refractive index lenses and full multicoatings for high contrast, high resolution, and flat field images across its very wide 82° field of view. The lens edges have been blackened to improve contrast.\u003c\/p\u003e\n\u003cp\u003eA 10\" f\/4.5 Dobsonian reflector gives you a full 0.79° field at 103x with this eyepiece, half again as wide as the full Moon, for eyepiece filling views of showpiece nebulas like Orion. Even an 8\" f\/10 catadioptric has a 0.45° field at 182x that's almost as wide as the full Moon itself, for thrilling close-up views of our nearest celestial neighbor. Use the calculator in the \"formula\" tab above to see just how wide a field you'll get with your particular telescope.\u003c\/p\u003e\n\u003cp\u003eAt 15mm, the eye relief is surprisingly good, although eyeglass wearers will still see a somewhat vignetted image. This isn't as much a problem as you might think, as the 82° field of view is so wide that even non-eyeglass wearers have trouble seeing the whole field at once. This is an eyepiece that shows you a \"picture window view\" of space for a true \u003cem\u003efull-immersion \u003c\/em\u003eobserving experience. With its unconstricted view, your eye relaxes, allowing you to easily use the \"averted vision\" technique to study faint details across a huge field of view.\u003c\/p\u003e\n\u003cp\u003eThe eyepiece has a soft fold-down rubber eyecup and comes with dust covers for both ends of the eyepiece.\u003c\/p\u003e\n\u003cp\u003eThis individually serial numbered Explore Scientific eyepiece is backed by a limited one year warranty, which will be extended to an Explore Scientific \u003cem\u003etransferable lifetime limited warranty \u003c\/em\u003ewhen its warranty card is registered with Explore Scientific within 60 days of purchase. Here's a link to the full details on this \u003ca href=\"https:\/\/www.astronomics.com\/explore-scientific-warranty-information_t.aspx\"\u003eunique transferable lifetime warranty\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eTech Details: \u003c\/h2\u003e\n\u003ctable id=\"product-attribute-specs-table\" class=\"table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBarrel Size\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEye Relief\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e15mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eField of view\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e82\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Length\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e11mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of optical elements\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e10 oz.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1 year, extendable to lifetime\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40481976189001,"sku":"ES8211A","price":149.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/20164.jpg?v=1675379083"},{"product_id":"explore-scientific-14mm-82-field-argon-purged-waterproof-1-25-eyepiece","title":"Explore Scientific 14mm 82° Field Argon-Purged Waterproof 1.25\" Eyepiece","description":"\u003cp\u003eThis medium power 14mm Explore Scientific 82° field argon-purged eyepiece will show you surprisingly wide deep space panoramas with any type or focal ratio telescope.This 82° 14mm Explore Scientific is an exceptional medium focal length\/ultra wide field eyepiece with an unusual benefit. It is O-ring sealed and argon-purged to be 100% waterproof. This prevents internal fogging in the eyepiece; keeps the interior dust-and fungus-free; and makes it easier to clean, as there is no risk of excess cleaning solution getting trapped between the lenses.\u003c\/p\u003e\n\u003cp\u003eThe latest computer design programs have been used to optimize its performance. Its seven element\/four group design uses low dispersion and high refractive index lenses and full multicoatings for high contrast, high resolution, and flat field images across a very wide 82° field of view. The lens edges have been blackened to improve contrast.\u003c\/p\u003e\n\u003cp\u003eThe 14mm 82° Explore Scientific works with any type of telescope, from a fast focal ratio Dobsonian reflector to a long focal ratio achromatic refractor. Its wide field makes observing through it feel like you're looking through a \"picture window on space\" rather than through an eyepiece, particularly with fast focal ratio\/short focal length scopes such as fast apo refractors or Dobsonian reflectors.\u003c\/p\u003e\n\u003cp\u003eA 10\" f\/4.5 Dobsonian reflector will have a 1° field at 82x with this eyepiece. This gives you a full four minutes to observe as an object drifts from one side of the sharp field of view to the other before you have to reposition the scope. A 4\" f\/7 refractor like the Explore Scientific 102mm will have a 1.6° field (over three times the diameter of the full Moon) at 51x. \u003c\/p\u003e\n\u003cp\u003eAt 15mm, the eye relief is surprisingly good, although eyeglass wearers will still see a somewhat vignetted image. This isn't as much a problem as you might think, as the 82° field of view is so wide that even non-eyeglass wearers have trouble seeing the whole field at once. This is an eyepiece that shows you a \"picture window view\" of space for a true \u003cem\u003efull-immersion \u003c\/em\u003eobserving experience. With its unconstricted view, your eye relaxes, allowing you to easily use the \"averted vision\" technique to study faint details across a huge field of view.\u003c\/p\u003e\n\u003cp\u003eThe eyepiece has a soft fold-down rubber eyecup and comes with dust covers for both ends of the eyepiece.\u003c\/p\u003e\n\u003cp\u003eThis individually serial numbered Explore Scientific eyepiece is backed by a limited one year warranty, which will be extended to an Explore Scientific \u003cem\u003etransferable lifetime limited warranty \u003c\/em\u003ewhen its warranty card is registered with Explore Scientific within 60 days of purchase. Here's a link to full details on this \u003ca href=\"https:\/\/www.astronomics.com\/explore-scientific-warranty-information_t.aspx\"\u003eunique transferable lifetime warranty\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eTech Details: \u003c\/h2\u003e\n\u003ctable id=\"product-attribute-specs-table\" class=\"table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBarrel Size\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEye Relief\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e15mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eField of view\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e82\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Length\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e14mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of optical elements\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e9 oz.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1 year, extendable to lifetime\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40481976221769,"sku":"ES8214A","price":149.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/es8214.jpg?v=1675379085"},{"product_id":"explore-scientific-18mm-82-field-argon-purged-waterproof-2-eyepiece","title":"Explore Scientific 18mm 82° Field Argon-Purged Waterproof 2\" Eyepiece","description":"\u003cp\u003eThis 82° field Explore Scientific 18mm 2\" argon-purged waterproof eyepiece makes observing with many telescopes feel like you're taking a stroll through the cosmos rather than looking through an eyepiece.\u003c\/p\u003e\n\u003cp\u003eThis 2\" 18mm Explore Scientific is an exceptional medium focal length eyepiece with a wide, wide 82° field. It makes observing feel like you're floating above the Earth, taking a space walk, rather than looking through a telescope eyepiece, particularly with short focal length scopes such as fast focal ratio apo refractors or Dobsonian reflectors.\u003c\/p\u003e\n\u003cp\u003eIn addition to its wide field, the 18mm Explore Scientific has an extra benefit for you. It is O-ring sealed and nitrogen-purged to be 100% waterproof. This prevents internal fogging in the eyepiece; keeps the interior dust-and fungus-free; and makes it easier to clean, as there is no risk of excess cleaning solution getting trapped between the lenses.\u003c\/p\u003e\n\u003cp\u003eThe latest computer design programs have been used to optimize its performance. Its six element\/four group design uses low dispersion and high refractive index lenses and full multicoatings for high contrast, high resolution, and flat field images across its very wide 82° field of view. The lens edges have been blackened to improve contrast.\u003c\/p\u003e\n\u003cp\u003eA 10\" f\/4.5 Dobsonian reflector will have a full 1.29° field at 63.5x with this eyepiece, able to encompass all of the Pleiades in one field. Even an 8\" f\/10 catadioptric will have a field almost one and a half lunar diameters across, able to encompass the full Moon with room to spare, the Orion Nebula, and many globular clusters, as well. \u003c\/p\u003e\n\u003cp\u003eAt 13mm, the eye relief will somewhat vignette the field of view for eyeglass wearers. This isn't as much a problem as you might think, as the 82° field of view is so wide that even non-eyeglass wearers have trouble seeing the whole field at once. All observers have to move their eye from side to side to take in the immense view, so vignetting in the conventional sense is not a problem. This is one of those eyepieces that can truly be described as showing you a \"picture window view\" of space. The visual effect of its long eye-relief and 82° apparent field is truly a full-immersion experience. Your eye is relaxed, allowing you to easily use the \"averted vision\" technique to study faint details across its huge field of view.\u003c\/p\u003e\n\u003cp\u003eThe eyepiece has a soft fold-down rubber eyecup and comes with dust covers for both ends of the eyepiece.\u003c\/p\u003e\n\u003cp\u003eThis individually serial numbered Explore Scientific eyepiece is backed by a limited one year warranty, which will be extended to an Explore Scientific transferable product lifetime limited warranty when its warranty card is registered with Explore Scientific within 60 days of purchase. Here's a link to the full details on this \u003ca href=\"https:\/\/www.astronomics.com\/explore-scientific-warranty-information_t.aspx\"\u003eunique transferable lifetime warranty\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eTech Details: \u003c\/h2\u003e\n\u003ctable id=\"product-attribute-specs-table\" class=\"table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBarrel Size\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEye Relief\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e13mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eField of view\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e82\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Length\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e18mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of optical elements\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e14 oz.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1 year, extendable to lifetime\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40481976254537,"sku":"ES8218A","price":189.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/files\/18_1200x1200_ec3bc7fc-fd7d-4929-b62f-f671283d2a1a.webp?v=1722010232"},{"product_id":"explore-scientific-4-7mm-82-field-argon-purged-waterproof-1-25-eyepiece","title":"Explore Scientific 4.7mm 82° Field Argon-Purged Waterproof 1.25\" Eyepiece","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan style=\"color: rgb(255, 42, 0);\"\u003e\u003cstrong\u003eThis Product Has Been Discontinued And This Is Here for Informational Purposes Only. It Is No Longer For  Sale.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis 4.7mm Explore Scientific 82° field argon-purged waterproof eyepiece is an excellent very high power, very wide field waterproof eyepiece for resolving globular clusters and closely-spaced binary stars. \u003c\/p\u003e\n\u003cp\u003eThis 82° 4.7mm Explore Scientific is an excellent short focal length\/ultra wide field eyepiece with an unusual benefit. It is O-ring sealed and argon-purged to be 100% waterproof. This prevents internal fogging in the eyepiece; keeps the interior dust-and fungus-free; and makes it easier to clean, as there is no risk of excess cleaning solution getting trapped between the lenses.\u003c\/p\u003e\n\u003cp\u003eThe latest computer design programs have been used to optimize its performance. Its seven element\/four group design uses low dispersion and high refractive index lenses and full multicoatings for high contrast, high resolution, and flat field images across a very wide 82° field of view. The lens edges have been blackened to improve contrast.\u003c\/p\u003e\n\u003cp\u003eThe 4.7mm 82° Explore Scientific works with any telescope from a fast focal ratio reflector to a long focal length refractor or Maksutov. It's particularly good with Dobsonians and fast focal ratio refractors, providing high magnification with a very wide field of view for observing smaller globular clusters and compact nebulas.\u003c\/p\u003e\n\u003cp\u003eAt 14mm, the eye relief is surprisingly good for such a short focal length eyepiece, although eyeglass wearers will still see a somewhat vignetted image. This is not as much a problem as you might think, as the 82° field of view is so wide that even non-eyeglass wearers have trouble seeing the whole field at once. This is an eyepiece that shows you a \"picture window view\" of space for a true \u003cem\u003efull-immersion \u003c\/em\u003eobserving experience. With its unconstricted view, your eye relaxes, allowing you to easily use the \"averted vision\" technique to study faint details across a huge field of view.\u003c\/p\u003e\n\u003cp\u003eYou can use the calculator in the \"formula\" tab above to see just how wide the field will be with your particular telescope. For example, it will give you a 0.54° field (slightly wider than the full Moon) at 152x with a 4\" f\/7 refractor like the Explore Scientific 102mm triplet apo refractor.\u003c\/p\u003e\n\u003cp\u003eThe eyepiece has a soft fold-down rubber eyecup and comes with dust covers for both ends of the eyepiece.\u003c\/p\u003e\n\u003cp\u003eThis individually serial numbered Explore Scientific eyepiece is backed by a limited one year warranty, which will be extended to an Explore Scientific \u003cem\u003etransferable lifetime limited warranty \u003c\/em\u003ewhen its warranty card is registered with Explore Scientific within 60 days of purchase.  Here's a link to the full details on this \u003ca href=\"https:\/\/www.astronomics.com\/explore-scientific-warranty-information_t.aspx\"\u003eunique transferable lifetime warranty\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eTech Details: \u003c\/h2\u003e\n\u003ctable id=\"product-attribute-specs-table\" class=\"table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBarrel Size\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEye Relief\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e14mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eField of view\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e82\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Length\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e4.7mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of optical elements\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e7.5 oz.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1 year, extendable to lifetime\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40481976287305,"sku":"ES8204A","price":229.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/es8204.jpg?v=1675379089"},{"product_id":"explore-scientific-6-7mm-82-field-argon-purged-waterproof-1-25-eyepiece","title":"Explore Scientific 6.7mm 82° Field Argon-Purged Waterproof 1.25\" Eyepiece","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan style=\"color: rgb(255, 42, 0);\"\u003e\u003cstrong\u003eThis Product Has Been Discontinued And This Is Here for Informational Purposes Only. It Is No Longer For  Sale.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis high power 6.7mm Explore Scientific 82° argon-purged waterproof eyepiece will show you surprisingly wide deep space panoramas, even with short focal length\/fast focal ratio refractors and Dobsonian scopes.\u003c\/p\u003e\n\u003cp\u003eThis 82° 6.7mm Explore Scientific is an excellent short focal length\/ultra wide field eyepiece with an unusual benefit. It is O-ring sealed and argon-purged to be 100% waterproof. This prevents internal fogging in the eyepiece; keeps the interior dust-and fungus-free; and makes it easier to clean, as there is no risk of excess cleaning solution getting trapped between the lenses.\u003c\/p\u003e\n\u003cp\u003eThe latest computer design programs have been used to optimize its performance. Its seven element\/four group design uses low dispersion and high refractive index lenses and full multicoatings for high contrast, high resolution, and flat field images across a very wide 82° field of view. The lens edges have been blackened to improve contrast.\u003c\/p\u003e\n\u003cp\u003eThe 6.7mm 82° Explore Scientific works with any telescope from a fast focal ratio reflector to a long focal length refractor. It's particularly good with Dobsonians and fast focal ratio refractors, providing high magnification with a very wide field of view for observing globular clusters and compact nebulas.\u003c\/p\u003e\n\u003cp\u003eAt 14mm, the eye relief is surprisingly good for such a short focal length eyepiece, although eyeglass wearers will still see a somewhat vignetted image. This isn't as much a problem as you might think, as the 82° field of view is so wide that even non-eyeglass wearers have trouble seeing the whole field at once. This is an eyepiece that shows you a \"picture window view\" of space for a true \u003cem\u003efull-immersion \u003c\/em\u003eobserving experience. With its unconstricted view, your eye relaxes, allowing you to easily use the \"averted vision\" technique to study faint details across a huge field of view.\u003c\/p\u003e\n\u003cp\u003eYou can use the calculator in the \"formula\" tab above to see just how wide the field will be with your particular telescope. For example, it will give you a 0.77° field (half again as wide as the full Moon) at 106x with a 4\" f\/7 refractor like the Explore Scientific 102mm triplet apo refractor.\u003c\/p\u003e\n\u003cp\u003eThe eyepiece has a soft fold-down rubber eyecup and comes with dust covers for both ends of the eyepiece.\u003c\/p\u003e\n\u003cp\u003eThis individually serial numbered Explore Scientific eyepiece is backed by a limited one year warranty, which will be extended to an Explore Scientific \u003cem\u003etransferable lifetime limited warranty\u003c\/em\u003e when its warranty card is registered with Explore Scientific within 60 days of purchase.  This link will take you to full details on this \u003ca href=\"https:\/\/www.astronomics.com\/explore-scientific-warranty-information_t.aspx\"\u003eunique transferable lifetime warranty\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eTech Details:\u003c\/h2\u003e\n","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40481976516681,"sku":"ES8206A","price":229.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/20168.jpg?v=1675379091"},{"product_id":"explore-scientific-8-8mm-82-field-argon-purged-waterproof-1-25-eyepiece","title":"Explore Scientific 8.8mm 82° Field Argon-Purged Waterproof 1.25\" Eyepiece","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan style=\"color: rgb(255, 42, 0);\"\u003e\u003cstrong\u003eThis Product Has Been Discontinued And This Is Here for Informational Purposes Only. It Is No Longer For  Sale.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis 8.8mm Explore Scientific 82° field argon-purged waterproof eyepiece is the right focal length to give you very useful exit pupil sizes and magnifications with all scope types and focal ratios - f\/10 Schmidt-Cassegrains, short focal length f\/6 refractors, and f\/4.5 Dobsonian reflectors alike.This 82° 8.8mm Explore Scientific is an excellent medium focal length\/ultra wide field eyepiece with an unusual benefit. It is O-ring sealed and argon-purged to be 100% waterproof. This prevents internal fogging in the eyepiece; keeps the interior dust-and fungus-free; and makes it easier to clean, as there is no risk of excess cleaning solution getting trapped between the lenses.\u003c\/p\u003e\n\u003cp\u003eThe latest computer design programs have been used to optimize its performance. Its seven element\/four group design uses low dispersion and high refractive index lenses and full multicoatings for high contrast, high resolution, and flat field images across a very wide 82° field of view. The lens edges have been blackened to improve contrast.\u003c\/p\u003e\n\u003cp\u003eThe 8.8mm 82° Explore Scientific works with any telescope, from a fast focal ratio reflector, to a catadioptric, to a long focal length refractor. With an 8\" Schmidt-Cassegrain, for example, it gives you 227x, a 0.88mm exit pupil (very close to the 1mm exit pupil recommended for high magnification observing under average to good seeing conditions), and a 0.36° field of view (about three-quarters the diameter of the full Moon). With a 10\" f\/4.5 Dobsonian, it gives you 129x, a generous 1.95mm exit pupil suitable for nebula observing, and an equally generous 0.64° field of view (more than one and a quarter times the diameter of the full Moon). \u003c\/p\u003e\n\u003cp\u003eAt 14mm, the eye relief is surprisingly good for an eyepiece in this focal length range, although eyeglass wearers will still see a somewhat vignetted image. This isn't as much a problem as you might think, as the 82° field of view is so wide that even non-eyeglass wearers have trouble seeing the whole field at once. This is an eyepiece that shows you a \"picture window view\" of space for a true \u003cem\u003efull-immersion \u003c\/em\u003eobserving experience. With its unconstricted view, your eye relaxes, allowing you to easily use the \"averted vision\" technique to study faint details across a huge field of view.\u003c\/p\u003e\n\u003cp\u003eThe eyepiece has a soft fold-down rubber eyecup and comes with dust covers for both ends of the eyepiece.\u003c\/p\u003e\n\u003cp\u003eThis individually serial numbered Explore Scientific eyepiece is backed by a limited one year warranty, which will be extended to an Explore Scientific \u003cem\u003etransferable lifetime limited warranty \u003c\/em\u003ewhen its warranty card is registered with Explore Scientific within 60 days of purchase. This link will take you to full details on this \u003ca href=\"https:\/\/www.astronomics.com\/explore-scientific-warranty-information_t.aspx\"\u003eunique transferable lifetime warranty\u003c\/a\u003e.\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40481976549449,"sku":"ES8208A","price":229.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/20169.jpg?v=1675379093"},{"product_id":"explore-scientific-24mm-82-field-argon-purged-waterproof-2-eyepiece","title":"Explore Scientific 24mm 82° Field Argon-Purged Waterproof 2\" Eyepiece","description":"\u003cp\u003eThis 82° field Explore Scientific 24mm 2\" argon-purged waterproof eyepiece makes observing feel like you're relaxing in front of a picture window on the Universe, rather than squinting through an eyepiece.\u003c\/p\u003e\n\u003cp\u003eThis 2\" 24mm Explore Scientific is an excellent low power eyepiece with a wide, wide fully-immersive 82° field of view that's particularly well-matched to big Dobsonian scopes and short focal ratio refractors. Viewing through this 24mm Explore Scientific makes you feel like you're floating above the Earth, taking a space walk, rather than looking through a telescope eyepiece. This is an eyepiece that shows you a truly relaxed and unconfined \"picture window\" view of space.\u003c\/p\u003e\n\u003cp\u003eWhile the longer focal length 30mm Explore Scientific provides an even wider field of view with an f\/4.5 scope, the 30mm also has a very large 6.7mm exit pupil that is larger than many observers' eyes can dilate. That effectively wastes some of a Dob's light gathering capacity, as some of the full light cone falls on the observer's iris, rather than entering his or her eye.\u003c\/p\u003e\n\u003cp\u003eIn addition to its wide field, the 24mm Explore Scientific has an extra benefit for you. It is O-ring sealed and argon-purged to be 100% waterproof. This prevents internal fogging in the eyepiece; keeps the interior dust-and fungus-free; and makes it easier to clean, as there is no risk of excess cleaning solution getting trapped between the lenses.\u003c\/p\u003e\n\u003cp\u003eThe latest computer design programs have been used to optimize its performance. Its six element\/four group design uses low dispersion and high refractive index lenses and full multicoatings for high contrast, high resolution, and flat field images across its very wide 82° field of view. The lens edges have been blackened to improve contrast.\u003c\/p\u003e\n\u003cp\u003eA 12\" f\/4.5 Dobsonian reflector will have a full 1.43° field at 57x with this eyepiece, able to encompass all of the Pleiades in one field. Even an 8\" f\/10 catadioptric will have a 0.98° field almost two lunar diameters across, for thrilling views of the larger nebulas, like Orion. \u003c\/p\u003e\n\u003cp\u003eWith 17mm of eye relief, this Explore Scientific eyepiece provides virtually unvignetted views for eyeglass wearers, although the 82° field of view is so wide that even non-eyeglass wearers can't see the whole field at once. All observers have to move their eye from side to side to take in the immense view, so vignetting in the conventional sense is not a problem.\u003c\/p\u003e\n\u003cp\u003eThe eyepiece has a soft fold-down rubber eyecup and comes with dust covers for both ends of the eyepiece.\u003c\/p\u003e\n\u003cp\u003eThis individually serial numbered Explore Scientific eyepiece is backed by a limited one year warranty, which will be extended to an Explore Scientific \u003cem\u003etransferable lifetime limited warranty \u003c\/em\u003ewhen its warranty card is registered with Explore Scientific within 60 days of purchase.  Here's a link to full details on this \u003ca href=\"https:\/\/www.astronomics.com\/explore-scientific-warranty-information_t.aspx\"\u003eunique transferable lifetime warranty\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eTech Details: \u003c\/h2\u003e\n\u003ctable class=\"table\" id=\"product-attribute-specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBarrel Size\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEye Relief\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e17mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eField of view\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e82\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Length\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e24mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of optical elements\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1.6 lbs.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1 year, extendable to lifetime\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40481976582217,"sku":"ES8224A","price":249.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/es8224.jpg?v=1675379095"},{"product_id":"explore-scientific-30mm-82-field-argon-purged-waterproof-2-eyepiece","title":"Explore Scientific 30mm 82° Field Argon-Purged Waterproof 2\" Eyepiece","description":"\u003cp\u003eThis 82° field Explore Scientific 30mm 2\" argon-purged waterproof eyepiece gives you the big picture, making you feel like you're relaxing in front of an expansive picture window on the Universe, rather than squinting through an eyepiece.\u003c\/p\u003e\n\u003cp\u003eThis 2\" 30mm Explore Scientific is an excellent low power eyepiece with an ultra-wide 82° field of view, one so wide you have to move your head from side to side to see it all. It is particularly suited to get the maximum image brightness and field of view out of big Dobsonian scopes, but will work well with any scope that can use 2\" eyepieces, even an f\/15 Maksutov. Viewing through this 30mm Explore Scientific makes you feel like you're floating above the Earth, taking a space walk, rather than looking through a telescope eyepiece. If you want a truly relaxed and unconfined \"picture window\" view of the Universe, this is the eyepiece for you.\u003c\/p\u003e\n\u003cp\u003eWith an f\/4.5 Dobsonian reflector, this 30mm eyepiece has a very large 6.7mm exit pupil larger than some observers' eyes can dilate. That can effectively waste some of the Dob's light gathering capacity for those observers, as some of the full light cone will fall on their iris, rather than entering his or her eye. Even so, many observers are willing to trade a little light gathering for the jaw-dropping fully-immersive view through this 82° apparent field eyepiece. If you want to see the big picture, this is an eyepiece you will treasure for years to come.\u003c\/p\u003e\n\u003cp\u003eIn addition to its wide field, the 30mm Explore Scientific has an extra benefit for you. It is O-ring sealed and argon-purged to be 100% waterproof. This prevents internal fogging in the eyepiece; keeps the interior dust-and fungus-free; and makes it easier to clean, as there is no risk of excess cleaning solution getting trapped between the lenses.\u003c\/p\u003e\n\u003cp\u003eThe latest computer design programs have been used to optimize its performance. Its six element\/four group design uses low dispersion and high refractive index lenses and full multicoatings for high contrast, high resolution, and flat field images across its very wide 82° field of view. The lens edges have been blackened to improve contrast.\u003c\/p\u003e\n\u003cp\u003eA 12\" f\/4.5 Dobsonian reflector gives you a full 1.79° field at 45.7x with this eyepiece, well over three lunar diameters, and easily able to encompass all of the Pleiades or Orion in one field. You get over seven minutes of uninterrupted observing with such a scope while an object drifts from one side of the sharp and flat eyepiece field to the other. That's plenty of time for multiple observers to look at the same object, or for you to absorb as much detail as possible, before having to reposition the scope. Even an 8\" f\/10 catadioptric has a 1.23° field that's almost two and a half lunar diameters across, for thrilling views of the larger nebulas, like the Omega and Orion. \u003c\/p\u003e\n\u003cp\u003eWith 21mm of eye relief, this 30mm Explore Scientific eyepiece provides unvignetted views for eyeglass wearers, although the 82° field of view is so wide that even non-eyeglass wearers can't see the whole field at once. All observers have to move their eye from side to side to see out to the field stop.\u003c\/p\u003e\n\u003cp\u003eThe eyepiece has a soft fold-down rubber eyecup and comes with dust covers for both ends of the eyepiece.\u003c\/p\u003e\n\u003cp\u003eThis individually serial numbered Explore Scientific eyepiece is backed by a limited one year warranty, which will be extended to an Explore Scientific \u003cem\u003etransferable lifetime limited warranty \u003c\/em\u003ewhen its warranty card is registered with Explore Scientific within 60 days of purchase. This link will give you full details on this \u003ca href=\"https:\/\/www.astronomics.com\/explore-scientific-warranty-information_t.aspx\"\u003eunique transferable lifetime warranty\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eTech Details: \u003c\/h2\u003e\n\u003ctable class=\"table\" id=\"product-attribute-specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBarrel Size\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEye Relief\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e21mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eField of view\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e82\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Length\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e30mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of optical elements\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e2.2 lbs.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1 year, extendable to lifetime\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40481976614985,"sku":"ES8230A","price":299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/files\/30_1200x1200_5b7493da-ba91-42d6-b808-a411bc89b77f.webp?v=1722014344"},{"product_id":"explore-scientific-9mm-100-field-argon-purged-waterproof-2-eyepiece","title":"Explore Scientific 9mm 100° Field Argon-Purged Waterproof 2\" Eyepiece","description":"\u003cp\u003eThe Explore Scientific 9mm argon-purged waterproof 2\" eyepiece combines a high power capability with a 100° apparent field to provide a jaw-dropping observing experience in scopes ranging from small refractors to the largest Dobsonians and catadioptrics.\u003c\/p\u003e\n\u003cp\u003eThe 9mm 100° field argon-purged Explore Scientific eyepiece is designed to provide a spectacular maximum field\/medium to medium-high power image with telescopes having focal ratios as fast as f\/4. It is exceptionally effective on nebulas with fast f\/ratio reflectors, such as Dobsonians, giving both an immense field and a good 2mm exit pupil with the typical f\/4.5 Dob that is very effective at darkening the sky background so that faint stars and diffuse objects pop out more clearly.\u003c\/p\u003e\n\u003cp\u003eIts very wide field also makes it convenient for moderate power lunar and planetary observing with Dobsonians, as you have much longer to observe before the planet drifts out of the field and the scope has to be repositioned. That said, it is worth noting that the new 9mm Explore Scientific Explore Scientific is marvelous for open clusters, nebulas, galaxy clusters, and globular clusters with \u003cem\u003eany \u003c\/em\u003etelescope capable of using a 2\" eyepiece.\u003c\/p\u003e\n\u003cp\u003eThe 100° apparent field of this 9mm Explore Scientific eyepiece is nearly 50% larger in area than an 82° field eyepiece. You \u003cem\u003ecould \u003c\/em\u003eget a similar true field with a longer focal length (but narrower apparent field) conventional eyepiece, but the 9mm Explore Scientific Explore Scientific has the benefits of the higher power and darker sky backgrounds that are inherent in its shorter focal length. \u003c\/p\u003e\n\u003cp\u003eThe 9mm Explore Scientific 100° field 2\" eyepiece is O-ring sealed and argon-purged to be 100% waterproof. While waterproofing might seem important only for observing underwater, waterproofing serves several five useful purposes for the astronomical observer as well.\u003c\/p\u003e\n\u003cp\u003eOne, internally sealing the eyepiece and purging it with inert, dry nitrogen gas prevents internal fogging in the eyepiece when observing at very low temperatures. Two, for observers in dusty climates, it halts the intrusion of wind-blown dust and fine particulates into the eyepiece body. Three, for observers in very humid climates, it prevents the growth of fungus on the internal lens elements. Four, for all observers, it maximizes the life of the internal optical coatings. And finally, five, the waterproof 9mm Explore Scientific eyepiece is easier to clean, as there is no risk of cleaning solution migrating from the top of the lens and seeping around edges to be trapped in between elements. To insure a perfect seal, Explore Scientific tests every eyepiece in one meter of water for 30 minutes before shipping.\u003c\/p\u003e\n\u003cp\u003eThere is a soft rolldown eyecup to shield the eye from ambient light (from a neighbor's security light, for example) and improve the image contrast. At an eye relief of 12.5mm, the 9mm Explore Scientific would normally somewhat vignette the field of view for eyeglass wearers. However, since the 100° field is so wide that you can't see the full field without having to move your head from side to side to take it all in anyway, vignetting in the conventional sense is not a problem.\u003c\/p\u003e\n\u003cp\u003eThe 9mm Explore Scientific has high contrast, comfortable eye relief, and full field sharpness - with well-controlled astigmatism, field curvature, and lateral color. The 9mm Explore Scientific fits 2\" focusers only. A safety groove is machined into the 2\" chrome barrel to engage your focuser thumbscrew. This helps prevent the eyepiece from falling should the thumbscrew accidentally loosen while observing.\u003c\/p\u003e\n\u003cp\u003eThis individually serial numbered Explore Scientific eyepiece is backed by a limited one year warranty, which will be extended to an Explore Scientific \u003cem\u003etransferable lifetime limited warranty \u003c\/em\u003ewhen its warranty card is registered with Explore Scientific within 60 days of purchase. Here's a link to the full details on this \u003ca href=\"https:\/\/www.astronomics.com\/explore-scientific-warranty-information_t.aspx\"\u003eunique transferable lifetime warranty\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eTech Details: \u003c\/h2\u003e\n\u003ctable class=\"table\" id=\"product-attribute-specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBarrel Size\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEye Relief\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e12.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eField of view\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Length\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e9mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of optical elements\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e9\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1 lb. 5 oz.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1 year, extendable to lifetime\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40481976647753,"sku":"ES09A","price":299.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/20172.jpg?v=1675379100"},{"product_id":"explore-scientific-14mm-100-field-argon-purged-waterproof-2-eyepiece","title":"Explore Scientific 14mm 100° Field Argon-Purged Waterproof 2\" Eyepiece","description":"\u003cp\u003eThe 100° apparent field of the Explore Scientific 14mm argon-purged waterproof 2\" eyepiece provides incredible maximum field\/medium power observing in scopes ranging from small refractors to the largest Dobsonians and catadioptrics.\u003c\/p\u003e\n\u003cdiv\u003eThe new 14mm Explore Scientific 100° field 2\" eyepiece is O-ring sealed and argon-purged to be 100% waterproof. While waterproofing might seem important only for observing underwater, waterproofing serves several five useful purposes for the astronomical observer as well.\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003eOne, internally sealing the eyepiece and purging it with inert, dry nitrogen gas prevents internal fogging in the eyepiece when observing at very low temperatures. Two, for observers in dusty climates, it halts the intrusion of wind-blown dust and fine particulates into the eyepiece body. Three, for observers in very humid climates, it prevents the growth of fungus on the internal lens elements. Four, for all observers, it maximizes the life of the internal optical coatings. And finally, five, the waterproof 14mm Explore Scientific eyepiece is easier to clean, as there is no risk of cleaning solution migrating from the top of the lens and seeping around edges to be trapped in between elements. To insure a perfect seal, Explore Scientific tests every eyepiece in one meter of water for 30 minutes before shipping.\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003eThe 14mm Explore Scientific is a nine element optical system using lenses of dense crown, light crown, dense flint, and lanthanum rare earth optical glasses. It is designed for maximum field\/medium power deep space use with telescopes having focal ratios down to f\/4. It is exceptionally effective on nebulas with fast f\/ratio reflectors, such as Dobsonians, giving both an immense field and a bright exit pupil (over 3mm with the typical f\/4.5 Dob). Its very wide field also makes it convenient for moderate power lunar and planetary observing with Dobsonians, as you have much longer to observe before the planet drifts out of the field and the scope has to be repositioned. That said, it is worth noting that the new 14mm Explore Scientific Explore Scientific is marvelous for open clusters, nebulas, galaxy clusters, and globular clusters with \u0026lt;em\u0026gt;any \u0026lt;\/em\u0026gt;telescope capable of using a 2\" eyepiece.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThe 100° apparent field of this new 14mm Explore Scientific eyepiece is nearly 50% larger in area than an 82° field eyepiece. You \u0026lt;em\u0026gt;could \u0026lt;\/em\u0026gt;get a similar true field with a longer focal length (but narrower apparent field) conventional eyepiece,  but the 14mm Explore Scientific Explore Scientific has the benefits of the higher power and darker sky backgrounds that are inherent in its shorter focal length.\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003eThere is a soft rolldown eyecup to shield the eye from ambient light (from a neighbor's security light, for example) and improve the image contrast. At an eye relief of 14.5mm, the 14mm Explore Scientific would normally somewhat vignette the field of view for eyeglass wearers. However, since the 100° field is so wide that you can't see the full field without having to move your head from side to side to take it all in anyway, vignetting in the conventional sense is not a problem.\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003eThe 14mm Explore Scientific has high contrast, comfortable eye relief, and full field sharpness - with well-controlled astigmatism, field curvature, and lateral color. Initial comments from unbiased observers have been uniformly favorable. Here's an example from one experienced observer. \"I've looked at the stars for 30 years and I have never had an eyepiece gave me a wow factor like the Explore Scientific 100 degree 14mm did. At 100 degrees it is an awesome vista to see. Not only were the stars pin-point to the very edges of the field, the contrast was greatly enhanced as well. I was totally blown away, it is incredible.\"\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThe 14mm Explore Scientific fits 2\" focusers only. A safety groove is machined into the 2\" chrome barrel to engage your focuser thumbscrew. This helps prevent the eyepiece from falling should the thumbscrew accidentally loosen while observing.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThis individually serial numbered Explore Scientific eyepiece is backed by a limited one year warranty, which will be extended to an Explore Scientific transferable lifetime limited warranty when its warranty card is registered with Explore Scientific within 60 days of purchase. \u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch2\u003eTech Details: \u003c\/h2\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ctable class=\"table\" id=\"product-attribute-specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBarrel Size\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEye Relief\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e14.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eField of view\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Length\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e14mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of optical elements\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e9\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1 lb, 14 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1 year, extendable to lifetime\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40481976680521,"sku":"ES14A","price":349.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/files\/EPWP10014-01_2_1390x1390_e40b0942-317d-4c86-a9d3-deacab8018f5.webp?v=1722009063"},{"product_id":"explore-scientific-102mm-f-7-essential-series-fcd-1-ed-triplet-refractor","title":"Explore Scientific 102mm f\/7 \"Essential Series\" FCD-1 ED Triplet Refractor","description":"\u003cp\u003eThis 102mm (4\") Explore Scientific \u003cem\u003eEssential Series\u003c\/em\u003e air-spaced ED triplet apochromatic refractor is loaded with quality optical performance at a surprisingly reasonable price for a scope of its size and optical quality.\u003c\/p\u003e\n\u003cdiv class=\"heading\"\u003eThis 4\" Explore Scientific ES102 \"Essential Series\" apochromatic refractor has:\u003c\/div\u003e\n\u003cdiv class=\"heading\"\u003e\n\u003cul\u003e\n\u003cli\u003e102mm f\/7 fully multicoated triplet optics using a Hoya FPL51-equivalent ED element\u003c\/li\u003e\n\u003cli\u003eDual-speed 2\" rack and pinion focuser with 10:1 ratio fine focusing\u003c\/li\u003e\n\u003cli\u003eMounting rings with dovetail for use on a Vixen-style altazimuth or German equatorial mount\u003c\/li\u003e\n\u003cli\u003eFinderscope base installed on OTA\u003c\/li\u003e\n\u003cli\u003eExtended product lifetime warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003eThe Explore Scientific 4\" (102mm) aperture \"Essentials Series\" ES102 ED triplet refractor uses a premium Hoya ED glass element and state-of-the-art optical multicoatings in its apochromatic air-spaced ED triplet optics. The result is images that are essentially free of the annoying halo of unfocused violet light (chromatic aberration) that mars the view of bright stars and solar system objects in lesser scopes, despite the scope's relatively large aperture, and even at very high magnifications.\u003c\/p\u003e\n\u003cp\u003eThe Explore Scientific ES102 is a natural on an equatorial mount as the heart of your primary observing system. In addition, it's an excellent astrograph for serious wide field imaging, as well as crisp solar system imaging. Considering its lifetime warranty, its surprisingly reasonable price for a 4\" apochromatic triplet, and in view of the great optical performance that comes as standard equipment, the 4\" Explore Scientific ES102 is a terrific buy!\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures of this Telescope . . .\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eED triplet refractor optics:\u003c\/strong\u003e 102mm (4\") aperture, 714mm focal length, f\/7 focal ratio three-lens air-spaced optical system. The optics use a center lens element of Hoya FCD1 (Dense Fluor Crown) glass, the Hoya equivalent of FPL-51 ED (Extra-low Dispersion) glass. This ED element produces superior sharpness and color correction by minimizing the chromatic aberration, the \"false\" color fringing seen around bright objects when light rays pass through standard crown-and-flint doublet objectives, particularly those with apertures in the ES102 class. The result is to reduce spurious color halos and fringing to vanishingly low levels.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFully multicoated optics:\u003c\/strong\u003e The ES102 triplet objective lens has EMD™ (Enhanced Multilayer Deposition) antireflection multicoatings on all air-to-glass surfaces for high light transmission, minimal light scatter, and excellent contrast.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInternal light baffles:\u003c\/strong\u003e The aluminum tube body has contrast-enhancing internal light baffles and a specially darkened tube interior to provide dark sky backgrounds and high contrast.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCollimatable optics:\u003c\/strong\u003e One of the bonuses of owning a refractor is that, compared to standard reflector telescopes, they almost never require realigning of the optics (collimation). However, any air-spaced refractor telescope may require optical recentering if the lens elements are knocked out of alignment by a heavy blow during shipping or use. Removing the dew shield will give you access to the lens centering screws in the sides of the lens cell, which you can then adjust yourself by referring to the supplied instructions. You can also send your scope to Explore Scientific's Service Center for precision alignment. A standard service charge applies for factory realignment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDew shield:\u003c\/strong\u003e The supplied dew shield slows the formation of dew on the lens in cold weather to extend your undisturbed observing time. It also improves the contrast, similar to the effect of the lens shade on a camera lens, when observing during the day or when there is excessive ambient light at night, such as a neighbor's backyard security light. A slip-on metal dust cap is standard.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual speed 2\" rack and pinion focuser:\u003c\/strong\u003e The rotating precision-made no-backlash focuser has dual-speed focusing. There are two coarse focusing knobs. The right knob also has a smaller concentric knob with a 10:1 reduction gear microfine focusing ratio. This provides exceptionally precise image control during high magnification visual observing and critical DSLR or CCD imaging. The large focus knobs have ribbed gripping surfaces so they are easy to operate, even while wearing gloves or mittens in cold weather.\u003c\/p\u003e\n\u003cp\u003eThe focuser drawtube has a scale marked in centimeters and 1mm increments. This lets you note individual focuser positions for easy return to the correct focus when switching between visual use and photography. Lock knobs let you adjust the tension on the drawtube to accommodate varying eyepiece\/photo accessory loads, as well as firmly lock in a photographic focus. The focuser terminates in a non-marring 2\" compression ring accessory holder. Two 2\" draw tube extensions are included to let adjust the back focus when using a diagonal and eyepieces versus a camera.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMounting rings and dovetail:\u003c\/strong\u003e The ES102 has dual split mounting rings with a dovetail plate that fits the Vixen-style dovetail slot on the head of many of the most popular medium capacity German equatorial mounts. Such mounts include go-to mounts from Celestron and iOptron, among others. A spacer\/stabilizing bar on the top of the rings provides a carrying handle that makes it easy to transport the optical tube and install it on your equatorial mount. There is a mounting shoe for an optional finderscope installed on the body of the scope.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eExtended lifetime warranty:\u003c\/strong\u003e This individually serial numbered Explore Scientific telescope is backed by a limited one year warranty, which will be extended to an Explore Scientific transferable Life of the Product limited warranty when its warranty card is registered with Explore Scientific within 60 days of purchase.\u003c\/p\u003e\n\u003ch2\u003eTech Details: \u003c\/h2\u003e\n\u003ctable id=\"product-attribute-specs-table\" class=\"table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eAperture\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e4\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Ratio\u003c\/th\u003e\n\u003ctd class=\"data\"\u003ef\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Length\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e714mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTube Length w\/ Dew Shield\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e30.5\" (774mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTube Length w\/out Dew Shield\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e23.75\" (603mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHighest Useful Magnification\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e204x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTube Diameter\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e119mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e12 lbs.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDovetail\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eVixen\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eResolution\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1.14 arc seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTelescope Type\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eRefractor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eVisual Limiting Magnitude\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e\n\u003cp\u003e12.5\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1 year, extendable to lifetime\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003eSupplied Accessories: \u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDual tube rings with Vixen-style dovetail\u003c\/li\u003e\n\u003cli\u003e2\" dual speed rack and pinion focuser\u003c\/li\u003e\n\u003cli\u003eRetractable dew shield\u003c\/li\u003e\n\u003cli\u003eDust covers\u003c\/li\u003e\n\u003cli\u003eFinderscope base\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40481976713289,"sku":"ES102B","price":999.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/files\/ed102_b_854x854_4c39a1cf-2de3-43f1-ac91-a0da84a096c2.webp?v=1722007736"},{"product_id":"explore-scientific-152mm-f-8-fcd-1-ed-triplet-refractor-carbon-fiber-3-hex-rack-and-pinion-focuser","title":"Explore Scientific 152mm f\/8 FCD-1 ED Triplet Refractor, Carbon Fiber, 2.5\" Hex Rack And Pinion Focuser","description":"\u003cp\u003eThis big and optically excellent 152mm (6\") Explore Scientific air-spaced ED triplet apochromatic refractor has a carbon fiber body and a 2.5\" Hex rack and pinion focuser. It is superb for visual observing and long-exposure DSLR and CCD imaging.\u003c\/p\u003e\n\u003cdiv class=\"heading\"\u003eThis 6\" Explore Scientific ES152CF apochromatic carbon fiber refractor has:\u003c\/div\u003e\n\u003cdiv class=\"heading\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"heading\"\u003e• 152mm (6\") fully multicoated f\/8 apochromatic triplet optics using a Hoya FPL51-equivalent ED element\u003cbr\u003e• lightweight low thermal expansion carbon-fiber body\u003cbr\u003e• dual-speed 2.5\" HEX rack-and-pinion focuser with 2\" accessory holder\u003cbr\u003e• 2\" dielectric star diagonal with 2\" and 1.25\" brass compression ring eyepiece holders\u003cbr\u003e• dual split mounting rings with handle and Losmandy-style \"D-plate\" dovetail\u003cbr\u003e• extended lifetime warranty\u003c\/div\u003e\n\u003cdiv class=\"heading\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003eThe 6\" (152mm) aperture Explore Scientific ES152CF with 3\" HEX focuser uses a premium ED glass element and state-of-the-art optical multicoatings in its apochromatic air-spaced ED triplet optics. The result is visual and photographic images that are essentially free of the annoying halo of unfocused violet light (chromatic aberration) that mars the view of bright stars and solar system objects in lesser scopes, despite the scope's large aperture, and even at very high magnifications.\u003c\/p\u003e\n\u003cp\u003eThe body and dew shield of this 152mm Explore Scientific are made of high strength, low weight, low thermal expansion carbon fiber. This keeps the scope sharply focused as the ambient temperature changes during critical long-exposure CCD imaging.\u003c\/p\u003e\n\u003cp\u003eThis version of the Explore Scientific ES152CF is a natural on an equatorial mount as the heart of your observing system. In addition to it's superb visual images, it's an excellent astrograph for both serious wide field deep space imaging and crisp solar system imaging.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures of this Telescope . . .\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eED triplet refractor optics:\u003c\/strong\u003e 152mm (6\") aperture, 1216mm focal length, f\/8 focal ratio three-lens air-spaced optical system. The optics use a center lens element of Hoya FCD1 (Dense Fluor Crown) glass, the Hoya equivalent of FPL-51 ED (Extra-low Dispersion) glass. This ED element produces superior sharpness and color correction by essentially eliminating chromatic aberration, the \"false\" color fringing seen around bright objects when light rays pass through standard crown-and-flint doublet objectives, particularly those with apertures in the 152mm class. The result is to reduce spurious color halos and fringing to vanishingly low levels for both imaging and visual use.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFully multicoated optics:\u003c\/strong\u003e The triplet objective lens of the ES152CF has EMD™ (Enhanced Multilayer Deposition) antireflection multicoatings on all air-to-glass surfaces for high light transmission, minimal light scatter, and excellent contrast.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInternal light baffles:\u003c\/strong\u003e Contrast-enhancing internal light baffles and a specially darkened tube interior provide dark sky backgrounds and high terrestrial contrast.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCollimatable optics:\u003c\/strong\u003e One of the bonuses of owning a refractor is that, compared to standard reflector telescopes, they almost never require realigning of the optics (collimation). However, any air-spaced refractor telescope may require optical recentering if the lens elements are knocked out of alignment by a heavy blow during shipping or use. Removing the dew shield will give you access to the lens centering screws in the sides of the lens cell, which you can then adjust yourself by referring to the supplied instructions. You can also send your scope to Explore Scientific's Service Center for precision alignment. A standard service charge applies for factory realignment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCarbon fiber body:\u003c\/strong\u003e The body and dew shield of the 152mm Explore Scientific are made of woven carbon fiber fabric, encapsulated in epoxy. Carbon fiber, the same material used to fabricate much of the fuselage and wings of the new Boeing 787 Dreamliner passenger jet, has a high strength-to-weight ratio to keep the scope almost 20% lighter than comparable aperture aluminum-body scopes. In addition, it has low thermal expansion characteristics when subjected to temperature variations. This helps to keep the instrument sharply focused as the ambient temperature changes, which is particularly important during critical long-exposure CCD imaging.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDew shield:\u003c\/strong\u003e The supplied removable carbon fiber dew shield slows the formation of dew on the lens in cold weather to extend your undisturbed observing time. It also improves the contrast, similar to the effect of the lens shade on a camera lens, when there is excessive ambient light at night, such as a neighbor's backyard security light. A slip-on metal dust cap for the dew shield is standard.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual speed 2.5\" HEX rack-and-pinion focuser:\u003c\/strong\u003e This version of the ES152CF uses a heavy-duty 2.5\" rack-and-pinion focuser from JOC (Junghua Optical Company, the parent company of Explore Scientific). This 2.5\" JOC has dual-speed focusing. There are two coarse focusing knobs. The right knob also has a smaller concentric knob with a 10:1 fine focusing ratio. This provides very precise image control during high magnification visual observing and critical DSLR or CCD imaging. The large focus knobs have ribbed gripping surfaces so they are easy to operate, even while wearing gloves or mittens in cold weather.\u003c\/p\u003e\n\u003cp\u003eThe focuser can be rotated 360° for the best photographic composition without affecting the focus, which is locked in place with a large brass knob on the top of the focuser. Three large brass knobs lock the focuser at any desired rotational orientation. The focuser drawtube has a scale marked on both sides in centimeters and 1mm increments. This lets you note individual focuser positions for easy return to the correct focus when switching between visual use and photography. A knob underneath the focuser lets you adjust the tension on the built-in drawtube brake to accommodate varying eyepiece\/photo accessory loads.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2\" dielectric star diagonal and compression ring eyepiece holders:\u003c\/strong\u003e The supplied standard equipment 2\" mirror star diagonal of the ES152CF slips into the 2.5\" focuser drawtube. The 2\" diagonal has 99% reflectivity dielectric mirror coatings for high light transmission. The star diagonal uses a non-marring soft brass compression ring to hold 2\" eyepieces in place. The compression ring won't scratch the barrel of your 2\" eyepieces as an ordinary thumbscrew can. A supplied 1.25\" accessory adapter slips into the 2\" diagonal to let you use 1.25\" eyepieces in the 2\" diagonal.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMounting rings and dovetail:\u003c\/strong\u003e The ES152CF has dual split mounting rings mounted on a Losmandy-style \"D-plate\" dovetail that fits the Losmandy-style dovetail slot on the head of many of the most popular heavy duty German equatorial mounts. Such mounts include the Celestron CGEM DX and CGE Pro, the iOptron iEQ45, the Losmandy G11 and HGM Titan, and the Software Bisque Paramount MX go-to equatorial mounts, among others. A spacer\/stabilizing bar on the top of the rings provides a carrying handle that makes it easy to transport the optical tube and install it on your equatorial mount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eExtended lifetime warranty:\u003c\/strong\u003e This individually serial numbered Explore Scientific telescope is backed by a limited one year warranty, which will be extended to an Explore Scientific transferable lifetime limited warranty when its warranty card is registered with Explore Scientific within 60 days of purchase. \u003c\/p\u003e\n\u003ch2\u003eTech Details:\u003c\/h2\u003e\n\u003ctable id=\"product-attribute-specs-table\" class=\"table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eAperture\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e6\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBinary and Star Cluster Observation\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eGreat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Length\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1216\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Ratio\u003c\/th\u003e\n\u003ctd class=\"data\"\u003ef\/8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGalaxy and Nebula Observation\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHighest Useful Magnification\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e304x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLunar Observation\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eGreat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e21 lbs.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePlanetary Observation\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eGreat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eResolution\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e0.76 arc seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTelescope Type\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eRefractor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eVisual Limiting Magnitude\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e13.4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1 year, extendable to lifetime\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40481977434185,"sku":"ES152C3","price":3999.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/vwb_1800x1800_f0fe874b-a156-45f3-8623-529931defbfe.jpg?v=1722009416"},{"product_id":"explore-scientific-twilight-1-altazimuth-mount","title":"Explore Scientific Twilight 1 Altazimuth Mount","description":"\u003cp\u003eThe solid and stable Explore Scientific Twilight I light-to-medium-duty altazimuth mount and tripod has geared slow motion controls.  It weighs only 17.6 pounds, yet has a payload capacity of 18 pounds.\u003c\/p\u003e\n\u003cdiv\u003eThe Explore Scientific Twilight I is a solid and low-vibration light-to-medium-duty altazimuth mount and tripod designed to quickly and easily accept small to medium sized refractors in the 80mm to 127mm range. With a payload capacity of 18 pounds (8.2 kg), even light weight, fast focal ratio Newtonians will match up nicely with the Explore Scientific Twilight I mount. For payloads greater than 18 pounds, consider the bigger Explore Scientific Twilight II mount.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThe Twilight I alt-azimuth mount head is made of powder-coated aluminum. There are worm gear slow motion controls on both axes to let you smoothly follow the motion of the Moon, planets, and deep space objects across the heavens. The adjustable angle head can tilt forward or back at a 45° angle, as well as point straight up, depending on the length of your optical tube and your observing preferences. The slow motion control cables on the vertical and horizontal axes are easy to turn smoothly, even with gloves on in cold weather, due to their over-sized knurled control knobs. \u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eA small wrench is included with this package If you need to make quick adjustments to your mount in the field. It is stored in the fork arm and held in place with a magnet, so it is a snap to access the wrench and then store it safely away when done. It is a small thing, but an adjustment wrench is one less tool you will need to remember to bring with you on observing sessions.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThe chrome-plated steel tripod of the Explore Scientific Twilight I mount has adjustable height legs. It has a wide foot print of 42 inches with the legs fully extended, which makes the tripod very stable. A spreader bar locks against the inside of the legs for maximum rigidity to keep vibrations to a minimum. With the legs fully retracted, the tripod is 38.5\" high at highest point, and 36\" to the center of the mounting bracket. With the legs fully extended, the tripod is 55.5\" high at highest point, and 53\" to the center of the mounting bracket.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThe Explore Scientific Twilight 1 tripod weighs 11 pounds (5 kg), the head weighs 6.6 pounds (3 kg), for a total weight of 17.6 pounds (8 kg).\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003ch2\u003eTech Details: \u003c\/h2\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ctable id=\"product-attribute-specs-table\" class=\"table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e17.6 lbs.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1 year, extendable to lifetime\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40481977466953,"sku":"TWI-ONE","price":299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/files\/ES_Twilight1Mount_1_2021_1080x1080_b89e01fe-42cd-44fd-b3a2-a38762e3254e.webp?v=1722358674"},{"product_id":"explore-scientific-8-x-50mm-right-angle-illuminated-finderscope-with-polar-reticle","title":"Explore Scientific 8 X 50mm Right Angle Illuminated Finderscope With Polar Reticle","description":"\u003cp\u003eThis Explore Scientific 8x50mm illuminated right angle erect\/right-reading image finderscope with polar alignment reticle has all the features you want and need in a finderscope.\u003c\/p\u003e\n\u003cp\u003eThis right-angle illuminated Explore Scientific 8 x 50mm finderscope has an image-erecting amici prism built into its right-angle diagonal that gives you images that are correctly oriented (upright and right-reading), so that star patterns are seen exactly the way you see them on star charts and with your bare eye. This makes star-hopping from object to object when using the finder easier than with a conventional finderscope's mirror-image or inverted view.\u003c\/p\u003e\n\u003cp\u003eThe Explore Scientific finder's large 50mm aperture has a limiting magnitude of 11, fainter than the stars on any commercial star chart, making it easy for you to locate faint nebulas and galaxies. The field of view is a generous 7 degrees wide. \u003c\/p\u003e\n\u003cp\u003eThe finder weighs 1 pound, 9.1 ounces, including its standard equipment finder bracket. The bracket fits into the dovetail shoe mounted on all Explore Scientific scopes that do not have a finder as standard equipment. An optional mounting shoe is available for installing the finder on a scope from another manufacturer. The finder body is aluminum, with a black anodized aluminum lens cell and diagonal.\u003c\/p\u003e\n\u003cp\u003eThe supplied illuminated reticle eyepiece has northern and southern hemisphere polar alignment patterns to allow quick and precise polar alignment with any equatorial mount anywhere in the world. Rotating the eyecup focuses the eyepiece reticle, while a separate rubber ring at the rear of the finder body focuses the objective. The brightness of the Explore Scientific 8 x 50mm finder's reticle is controlled by a variable brightness knob on the cordless illuminator, which also serves as the illuminator's on\/off switch. The illuminator's deep red illumination will not disturb your dark adapted vision.  \u003c\/p\u003e\n\u003ch2\u003eTech Details: \u003c\/h2\u003e\n\u003ctable class=\"table\" id=\"product-attribute-specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1.6 lbs.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1 year, extendable to lifetime\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40481977827401,"sku":"ES850RA","price":199.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/files\/VFEI0850-RA_with_Illuminator_2_2400x2400_2af1d31f-f487-4a53-be76-7e44a529741a.webp?v=1722025020"},{"product_id":"explore-scientific-8-x-50mm-straight-through-illuminated-crosshair-finderscope","title":"Explore Scientific 8 X 50mm Straight-Through Illuminated Crosshair Finderscope","description":"\u003cp\u003eThis Explore Scientific 8x50mm illuminated crosshair reticle straight-through finder provides erect and right-reading images.\u003c\/p\u003e\n\u003cp\u003eThis straight-though illuminated Explore Scientific 8 x 50mm finderscope uses an image-erecting amici prism to give you images that are correctly oriented (upright and right-reading). Star patterns in the finder are seen exactly the way you see them on star charts and with your bare eye. This makes star-hopping from object to object when using the finder easier than with a conventional finderscope's mirror-image or inverted view.\u003c\/p\u003e\n\u003cp\u003eThe Explore Scientific finder's large 50mm aperture has a limiting magnitude of 11, fainter than the stars on any commercial star chart, making it easy for you to locate faint nebulas and galaxies. The field of view is a generous 6 degrees wide. The illuminated reticle of the finder has crosshairs with scale markings and an open center that not only helps you center objects precisely, but lets you judge the exact field of view in degrees.\u003c\/p\u003e\n\u003cp\u003eThe finder weighs 15.9 ounces, including its standard equipment finder bracket. The bracket fits into the dovetail shoe mounted on all Explore Scientific scopes that do not have a finder as standard equipment. An optional mounting shoe is available for installing the finder on a scope from another manufacturer. The finder body is aluminum, with a black anodized aluminum lens cell and diagonal.\u003c\/p\u003e\n\u003cp\u003eRotating the eyecup of the supplied illuminated crosshair reticle eyepiece focuses the crosshairs of the reticle to match your eyesight, while a separate ribbed ring at the front of the finder body focuses the objective. The brightness of the Explore Scientific 8 x 50mm finder's reticle is controlled by a variable brightness knob on the cordless illuminator, which also serves as the illuminator's on\/off switch. The illuminator's deep red illumination will not disturb your dark adapted vision.  \u003c\/p\u003e\n\u003ch2\u003eTech Details:\u003c\/h2\u003e\n\u003ctable class=\"table\" id=\"product-attribute-specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e15.9 oz.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1 year, extendable to lifetime\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40481977860169,"sku":"ES850SIL","price":179.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/files\/VFEI0850-01_StraightVF_2_2021_2400x2400_0c11b03f-2bdd-4bd0-a4fa-61550931a09c.webp?v=1722025214"},{"product_id":"explore-scientific-17mm-92-field-argon-purged-waterproof-2-eyepiece","title":"Explore Scientific 17mm 92° Field Argon-Purged Waterproof 2\" Eyepiece","description":"\u003cdiv\u003eYou may be startled at the amazingly wide expanse of inky black sky that greets you when you first look into the 92° field of this Explore Scientific 17mm hyper-wide eyepiece. Observing with the 17mm Explore 92° feels more like you are in orbit above the Earth, taking a space walk, rather than looking through a telescope eyepiece. \u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThe Explore Scientific 2\" 17mm is one of those eyepieces that can truly be described as showing you a \"picture window view\" of space. The visual effect of its long eye relief and 92° apparent field is truly a full-immersion experience. Your eye is relaxed, allowing you to easily use the \"averted vision\" technique to study faint details across its huge field of view.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eWith an apparent field of view that is close to the maximum possible for a hyper-wide eyepiece design, celestial objects are easier to locate with the Explore 92°. In non-driven telescopes, like Dobsonians or altazimuth mount refractors, an object stays in the field of view for a long time before you need to nudge the scope to center it again.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThe 17mm 92° field Explore Scientific is O-ring sealed and argon-purged to be 100% waterproof. This prevents internal fogging in the eyepiece in cold weather; keeps the interior dust-and fungus-free; and makes it easier to clean, as there is no risk of excess cleaning solution getting trapped between the lens elements.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThe latest computer design programs have been used to optimize its performance. Its eight element\/six group design uses low dispersion and high refractive index lenses and full multicoatings for high contrast, high resolution, and flat field images across its very wide 92° field of view. The lens edges have been blackened to improve contrast.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eA 10\" f\/4.5 Dobsonian reflector has a full 1.37° field at 67x with this eyepiece, able to encompass all of the Pleiades in one field. Even an 8\" f\/10 catadioptric has a field more than one and a half lunar diameters across, able to encompass the full Moon with room to spare, the Orion Nebula, and many globular clusters, as well. \u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThe long 20mm eye relief of the Explore Scientific 92° will not vignette the field of view for eyeglass wearers. The eyepiece has a soft fold-down rubber eyecup for eyeglass use and comes with dust covers for both ends of the eyepiece.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThis individually serial numbered 17mm Explore Scientific 92° field eyepiece is backed by a limited one year warranty, which will be extended to an Explore Scientific transferable product lifetime limited warranty when its warranty card is registered with Explore Scientific within 60 days of purchase. Here's a link to the \u003cspan\u003e\u003ca href=\"https:\/\/www.astronomics.com\/explore-scientific-warranty-information_t.aspx\"\u003efull details on this unique transferable lifetime warranty\u003c\/a\u003e\u003c\/span\u003e.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch2\u003eTech Details: \u003c\/h2\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ctable class=\"table\" id=\"product-attribute-specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBarrel Size\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEye Relief\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e20mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eField of view\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e92\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Length\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e17mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of optical elements\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e2 lbs. 9.5 oz.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1 year, extendable to lifetime\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40481979727945,"sku":"ES9217","price":369.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/files\/cq_1200x1200_9bc7762b-437b-4290-bcf2-2a83cbec2f40.webp?v=1722010143"},{"product_id":"explore-scientific-12mm-92-field-argon-purged-waterproof-2-eyepiece","title":"Explore Scientific 12mm 92° Field Argon-Purged Waterproof 2\" Eyepiece","description":"\u003cp\u003eThis 2\" 12mm 92° field Explore Scientific hyper-wide eyepiece provides an exceptionally immersive medium\/medium high power observing experience.\u003c\/p\u003e\n\u003cdiv\u003eYou may be startled at the amazingly wide expanse of inky black sky that greets you when you first look into the 92° field of this Explore Scientific 12mm hyper-wide eyepiece. Observing with the 12mm Explore 92° feels more like you are in orbit above the Earth, taking a space walk, rather than looking through a telescope eyepiece. \u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThe Explore Scientific 2\" 12mm is one of those eyepieces that can truly be described as showing you a \"picture window view\" of space. The visual effect of its long eye relief and 92° apparent field is truly a full-immersion experience. Your eye is relaxed, allowing you to easily use the \"averted vision\" technique to study faint details across its huge field of view.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eWith an apparent field of view that is close to the maximum possible for a hyper-wide eyepiece design, celestial objects are easier to locate with the Explore 92°. In non-driven telescopes, like Dobsonians or altazimuth mount refractors, an object stays in the field of view for a long time before you need to nudge the scope to center it again.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThe 12mm 92° field Explore Scientific is O-ring sealed and argon-purged to be 100% waterproof. This prevents internal fogging in the eyepiece in cold weather; keeps the interior dust-and fungus-free; and makes it easier to clean, as there is no risk of excess cleaning solution getting trapped between the lens elements.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThe latest computer design programs have been used to optimize its performance. Its eight element\/six group design uses low dispersion and high refractive index lenses and full multicoatings for high contrast, high resolution, and flat field images across its very wide 92° field of view. The lens edges have been blackened to improve contrast.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eA 10\" f\/4.5 Dobsonian reflector has a full 0.97° field at 95x with this eyepiece, nearly two lunar diameters across. Even an 8\" f\/10 catadioptric has a field 0.55° in diameter, able to encompass the full Moon with room to spare, the Orion Nebula, and many other nebulas and globular clusters, as well. \u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThe long 20mm eye relief of the Explore Scientific 92° will not vignette the field of view for eyeglass wearers. The eyepiece has a soft fold-down rubber eyecup for eyeglass use and comes with dust covers for both ends of the eyepiece.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThis individually serial numbered 12mm Explore Scientific 92° field eyepiece is backed by a limited one year warranty, which will be extended to an Explore Scientific transferable product lifetime limited warranty when its warranty card is registered with Explore Scientific within 60 days of purchase. Here's a link to the \u003cspan\u003e\u003ca href=\"https:\/\/www.astronomics.com\/explore-scientific-warranty-information_t.aspx\"\u003efull details on this unique transferable lifetime warranty\u003c\/a\u003e\u003c\/span\u003e.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch2\u003eTech Details: \u003c\/h2\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ctable id=\"product-attribute-specs-table\" class=\"table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBarrel Size\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEye Relief\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e20mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eField of view\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e92\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Length\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e12mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of optical elements\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e2 lbs. 1.9 oz.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1 year, extendable to lifetime\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40481979760713,"sku":"ES9212","price":309.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/files\/12_1_1200x1200_ab5ce826-4b08-40cf-857d-8adb8fa4f6b5.webp?v=1722008787"},{"product_id":"explore-scientific-10-truss-tube-dobsonian-telescope-generation-ii","title":"Explore Scientific 10\" Truss Tube Dobsonian Telescope Generation II","description":"Enjoy the heavens with this large, yet portable, Explore Scientific 10\" Truss Dobsonian.\n\u003cp\u003eNo telescope type has changed the hobby quite as much as the Dobsonian Telescope. Before the popularization of John Dobson's altazimuth mount design with low center of gravity combined with a Newtonian optical assembly, the vast majority of amateur telescopes consisted of small telescopes with small mounts - which made them difficult to use for serious deep sky observations by beginners. Large commercial telescopes could certainly do the job but were relatively expensive. The ingenious combination of simple yet effective mechanisms with big-aperture Newtonian optics gives the Dobsonian Telescope worldwide popularity, and this telescope design typically offers the largest aperture per dollar of any telescope type.\u003c\/p\u003e\n\u003cp\u003eDisassembly of the scope without tools ensures a trouble-free transport of this great scope even in very small cars. The entire structure has been optimized for maximum stiffness with minimal weight. The combination of large altitude bearings with optimized metal structural design allows fine and smooth adjustment, even at higher magnifications.The ideal workhorse for the deep sky observers.\u003c\/p\u003e\n\u003cp\u003eA 254mm aperture mirror collects more than 1,500 times as much light as the naked eye. Details on planets and deep sky objects will be visible even for inexperienced observers. Many star clusters are resolved to the core, spiral structure in distant galaxies is visible, and the complex matrix of bright and dark nebulae are an unforgettable experience. Oversize altitude (16.5-inch with adjustable clutch) and azimuth (13-inch) bearings allow for smooth operation. Easy-to-adjust collimation mechanisms for primary and secondary mirrors require no additional tools and only one person is a unique feature of this design.\u003c\/p\u003e\n\u003ch2\u003eTech Details: \u003c\/h2\u003e\n\u003ctable class=\"table\" id=\"product-attribute-specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eAperture\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e10\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Length\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1270mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Ratio\u003c\/th\u003e\n\u003ctd class=\"data\"\u003ef\/5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeaviest Single Component\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e44.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e59.3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOptical Coatings\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eAluminum with Quartz Overcoat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTelescope Type\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eReflector\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eView Finder\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eIluminated Red Dot\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eVisual Limiting Magnitude\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e14.7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1 year, extendable to lifetime\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003eSupplied Accessories: \u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eTwo-Speed 2-inch Rack \u0026amp; Pinion Focuser with 1.25-inch Adapter; LED Red Dot Finder, Collimation Assist Tool; Flexible Light Weight Light Baffle; Two Primary Mirror Fans with Battery Pack; Instructions\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40481980481609,"sku":"ES10D","price":1089.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/dob1045-00_full_hot_product_2016_1493x_1e3b6338-ae68-4157-b219-585c7d7cce2c.jpg?v=1722008170"},{"product_id":"explore-scientific-12-truss-tube-dobsonian-telescope-generation-ii","title":"Explore Scientific 12\" Truss Tube Dobsonian Telescope Generation II","description":"\u003cp data-end=\"402\" data-start=\"327\"\u003e\u003cstrong data-end=\"402\" data-start=\"327\"\u003eExplore Scientific Generation II 12-inch Truss Tube Dobsonian Telescope\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"795\" data-start=\"404\"\u003eThe Explore Scientific Generation II 12-inch Truss Tube Dobsonian is designed for serious visual observers who want big-aperture performance in a portable, easy-to-use package. With a large parabolic primary mirror, improved mechanical features, and a collapsible truss tube design, this telescope delivers deep-sky capability without the bulk and storage demands of a solid-tube instrument.\u003c\/p\u003e\n\u003cp data-end=\"972\" data-start=\"797\"\u003eWhether you're navigating the star clouds of the Milky Way or chasing distant galaxies, this scope offers the optical punch and flexibility that experienced stargazers demand.\u003c\/p\u003e\n\u003ch3 data-end=\"1005\" data-start=\"974\"\u003e12 Inches of Deep-Sky Power\u003c\/h3\u003e\n\u003cp data-end=\"1432\" data-start=\"1007\"\u003eThe 305mm (12\") primary mirror is precisely figured and polished from low-expansion optical glass, delivering high-contrast, sharp views of faint and extended deep-sky objects. At f\/5 (1525mm focal length), this telescope provides a generous field of view—perfect for sweeping nebulae or resolving globular clusters—while also retaining enough focal length for detailed planetary and lunar observing with the right eyepieces.\u003c\/p\u003e\n\u003cp data-end=\"1643\" data-start=\"1434\"\u003eThe light-gathering power of this scope is substantial. Compared to an 8\" reflector, it collects over 2.25x the light, giving fainter targets greater visibility and making brighter objects explode with detail.\u003c\/p\u003e\n\u003ch3 data-end=\"1695\" data-start=\"1645\"\u003eTruss Tube Portability Meets Solid Performance\u003c\/h3\u003e\n\u003cp data-end=\"2044\" data-start=\"1697\"\u003eA key strength of the Generation II design is its collapsible truss tube system. This structure reduces the size of the telescope for transport and storage while maintaining optical alignment and rigidity during use. The truss poles are solid, lightweight, and connect with minimal tools, making setup at a dark sky site quick and straightforward.\u003c\/p\u003e\n\u003cp data-end=\"2265\" data-start=\"2046\"\u003eThe open-frame design also promotes faster cooling of the primary mirror, which helps reduce thermal distortion and gets you to sharp images faster—an especially welcome benefit on nights when observing time is limited.\u003c\/p\u003e\n\u003ch3 data-end=\"2305\" data-start=\"2267\"\u003eSmooth Tracking and Stable Support\u003c\/h3\u003e\n\u003cp data-end=\"2648\" data-start=\"2307\"\u003eThe base features oversized altitude bearings with adjustable friction, allowing precise control of up-and-down motion whether you're using lightweight Plössls or heavy wide-angle eyepieces. The azimuth axis glides smoothly on a Teflon-on-laminate bearing system, making the telescope easy to push and nudge when star-hopping across the sky.\u003c\/p\u003e\n\u003cp data-end=\"2887\" data-start=\"2650\"\u003eThe entire rocker box is built from moisture-resistant laminated wood panels, designed to withstand regular use in the field. A built-in handle aids in transport, and the base can be disassembled for storage or vehicle loading if needed.\u003c\/p\u003e\n\u003ch3 data-end=\"2939\" data-start=\"2889\"\u003eDual-Speed Focuser and Red Dot Finder Included\u003c\/h3\u003e\n\u003cp data-end=\"3230\" data-start=\"2941\"\u003eA 2\" Crayford-style focuser with dual-speed control comes standard. The fine-focus knob gives you precise adjustment—particularly useful when observing fine planetary details or splitting close double stars. A 1.25\" adapter is included for full compatibility with your eyepiece collection.\u003c\/p\u003e\n\u003cp data-end=\"3474\" data-start=\"3232\"\u003eInstead of a traditional optical finder, the telescope includes a zero-magnification red dot finder, ideal for quick aiming and alignment. The red dot makes it easy to locate bright stars or celestial landmarks when navigating to your target.\u003c\/p\u003e\n\u003ch3 data-end=\"4094\" data-start=\"4030\"\u003eDesigned for Observers Who Travel Light—but Want to See Deep\u003c\/h3\u003e\n\u003cp data-end=\"4474\" data-start=\"4096\"\u003eThe Explore Scientific Generation II 12\" Truss Tube Dobsonian is a well-balanced telescope for amateur astronomers who want serious optical performance in a design that doesn't require a permanent observatory or a second pair of hands to move. It’s equally at home in the backyard or under pristine dark skies, and it’s ready to grow with you as your observing interests expand.\u003c\/p\u003e\n\u003cp data-end=\"4755\" data-start=\"4476\"\u003eFrom the sweeping arms of M101 to the delicate tendrils of the Veil Nebula, this telescope opens up the deep sky with clarity, contrast, and immersive views. If you’re ready to take the next big step in aperture—without taking over your garage—this is the scope to get you there.\u003c\/p\u003e\n\u003ch2\u003eTech Details: \u003c\/h2\u003e\n\u003ctable class=\"table\" id=\"product-attribute-specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eAperture\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e12\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Length\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1525mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Ratio\u003c\/th\u003e\n\u003ctd class=\"data\"\u003ef\/5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeaviest Single Component\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e50.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e66.2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1 year, extendable to lifetime\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40481980514377,"sku":"ES12D","price":1999.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/dob1245-00_full_hot_product_2016_1493x_6c499ca1-54a9-491f-88ad-5d86736778bd.jpg?v=1675379342"},{"product_id":"explore-scientific-16-truss-tube-dobsonian-telescope","title":"Explore Scientific 16\" Generation II Truss Tube Dobsonian Telescope","description":"\u003cp data-end=\"516\" data-start=\"429\"\u003e\u003cstrong data-end=\"516\" data-start=\"429\"\u003eExplore Scientific Generation II 16\" Truss Tube Dobsonian Telescope - ES-DOB1645-01\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"1035\" data-start=\"518\"\u003eIf you’re searching for a serious deep-sky telescope that delivers breathtaking views and true portability for a scope of this size, the Explore Scientific Generation II 16\" Truss Tube Dobsonian is a powerhouse worth considering. With its massive 406mm aperture, stable and smooth motion, and practical breakdown design, this scope is made for the dedicated visual observer ready to uncover structure in galaxies, trace filamentary detail in nebulae, and resolve distant globular clusters into star-sprinkled spheres.\u003c\/p\u003e\n\u003ch3 data-end=\"1081\" data-start=\"1037\"\u003eA 16\" Mirror That Brings the Sky to Life\u003c\/h3\u003e\n\u003cp data-end=\"1416\" data-start=\"1083\"\u003eAt the core of the ES-DOB1645-01 is a precision 406mm (16\") parabolic primary mirror, optimized for deep-sky performance. The fast f\/4.5 focal ratio (1829mm focal length) makes it easy to achieve wide-field views while still delivering enough focal length for high-magnification planetary and lunar observing with the right eyepiece.\u003c\/p\u003e\n\u003cp data-end=\"1728\" data-start=\"1418\"\u003eThe mirror is coated with standard aluminum and a protective overcoat, providing bright, high-contrast images across the visual spectrum. Whether you’re sweeping through the Virgo Cluster or studying the Veil Nebula under dark skies, this scope gathers enough light to make faint targets leap out with clarity.\u003c\/p\u003e\n\u003ch3 data-end=\"1772\" data-start=\"1730\"\u003eTruss Tube Portability Meets Stability\u003c\/h3\u003e\n\u003cp data-end=\"2123\" data-start=\"1774\"\u003eDespite its large aperture, this telescope is surprisingly transportable. The open truss design breaks the optical tube down into compact sections, with numbered truss poles and tool-free connectors for fast and secure assembly. Once fully set up, the structure is sturdy and well-aligned, holding collimation throughout extended observing sessions.\u003c\/p\u003e\n\u003cp data-end=\"2446\" data-start=\"2125\"\u003eA rear-mounted cooling fan comes standard and helps bring the large primary mirror to ambient temperature faster—an important feature for maintaining sharp, steady views as night falls. The open design of the truss structure promotes airflow and minimizes tube currents, which can soften images in enclosed optical tubes.\u003c\/p\u003e\n\u003ch3 data-end=\"2475\" data-start=\"2448\"\u003eSmooth Manual Operation\u003c\/h3\u003e\n\u003cp data-end=\"2813\" data-start=\"2477\"\u003eThe Generation II Dobsonian mount provides a stable, low-profile platform with smooth movement on both axes. The altitude bearings are generously sized, delivering fluid motion with reliable balance even when using heavier eyepieces or accessories. Adjustable tension knobs allow you to fine-tune altitude resistance to your preference.\u003c\/p\u003e\n\u003cp data-end=\"3123\" data-start=\"2815\"\u003eThe azimuth axis glides on Teflon pads over a durable laminate base, offering consistent resistance without sticking or backlash. The result is a mount that’s well-suited for manual tracking and star-hopping—precise enough to nudge at high magnification and forgiving enough for casual sweeping at low power.\u003c\/p\u003e\n\u003cp data-end=\"3474\" data-start=\"3125\"\u003eThe rocker box is made from reinforced laminated wood, designed to hold up to repeated setup and takedown in field conditions. Carry handles are built into the panels for easier transport and positioning. \u003c\/p\u003e\n\u003ch3 data-end=\"3504\" data-start=\"3476\"\u003eObserver-Friendly Design\u003c\/h3\u003e\n\u003cp data-end=\"3839\" data-start=\"3506\"\u003eExplore Scientific has outfitted this scope with a simple red dot reflex finder, ideal for initial alignment and coarse targeting of bright stars or deep-sky objects. While not as precise as an optical finder, the red dot unit is lightweight, quick to align, and well-suited to users who prefer to star-hop with wide-field eyepieces.\u003c\/p\u003e\n\u003cp data-end=\"4108\" data-start=\"3841\"\u003eThe 2\" dual-speed Crayford focuser delivers smooth, precise focusing with zero image shift. A 1.25\" adapter is included, letting you use either size eyepiece seamlessly. Focus adjustments are easy, even at high magnifications or when using heavy eyepieces or filters.\u003c\/p\u003e\n\u003cp data-end=\"4285\" data-start=\"4110\"\u003eThe open truss layout also makes collimation more accessible, with a rear-access primary mirror cell that features tool-free adjustment knobs for quick alignment in the field.\u003c\/p\u003e\n\u003ch3 data-end=\"4324\" data-start=\"4287\"\u003eVisual Astronomy on a Grand Scale\u003c\/h3\u003e\n\u003cp data-end=\"4798\" data-start=\"4326\"\u003eA telescope in this class opens up a staggering amount of the night sky. Thousands of objects show detail that’s beyond the reach of smaller scopes. Under dark skies, you’ll see spiral arms in galaxies like M51 and NGC 7331, resolve the dense cores of globulars such as M13 and M15, and tease out subtle variations in planetary nebulae and supernova remnants. Even familiar targets like M42 or the Double Cluster reveal new levels of complexity through a 16-inch aperture.\u003c\/p\u003e\n\u003cp data-end=\"5014\" data-start=\"4800\"\u003eDespite its size, the Generation II 16\" remains a practical and rewarding instrument for backyard observing, weekend trips to dark sites, or public outreach events where the \"wow\" factor of a big Dob really shines.\u003c\/p\u003e\n\u003ch2\u003eTech Details: \u003c\/h2\u003e\n\u003ctable class=\"table\" id=\"product-attribute-specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eAperture\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e16\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Length\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1826mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Ratio\u003c\/th\u003e\n\u003ctd class=\"data\"\u003ef\/4.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeaviest Single Component\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e66.1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e88.1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eView Finder\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eIlluminated Red Dot\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1 year, extendable to lifetime\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40481980547145,"sku":"ES16","price":3599.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/dob1645-00_full_hot_product_2016_1493x_e9d898b1-de65-444e-9737-3b6d5f9a7841.jpg?v=1675379344"},{"product_id":"explore-scientific-8-f-3-8-aluminum-tube-newtonian-br-n20839","title":"Explore Scientific 8\" f\/3.8 Aluminum Tube Newtonian  BR-N20839","description":"\u003cp\u003e\u003cspan style=\"font-size: 17.3333px; background-color: #ffffff; font-family: tahoma, verdana, sans-serif; color: #17161d;\"\u003e\u003cmeta charset=\"utf-8\"\u003e\n\u003cspan style=\"color: rgb(255, 42, 0);\"\u003e\u003cstrong\u003eThis Product Has Been Discontinued And This Is Here for Informational Purposes Only. It Is No Longer For  Sale.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"font-size: 17.3333px; background-color: #ffffff; font-family: tahoma, verdana, sans-serif; color: #17161d;\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 17.3333px; background-color: #ffffff; font-family: tahoma, verdana, sans-serif; color: #17161d;\"\u003eAre you looking for a telescope that is large, yet light weight?  Are you on the search for a wide field\/fast instrument?  Do you want your bank account to be happy about your purchase?  While not as \"cool\" as the Carbon Fiber model, optically it packs the same punch.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003eThe Bresser 208mm f\/3.9 Newtonian with White Aluminum Tube; 812mm focal length; 97% EMD Coatings; No Tool Secondary Collimation;ES Finder Scope Base ONLY installed on scope and Soft Carrying Case. Cradle Rings with Handle and Vixen-Style Dovetail. Weighs 23 lbs.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThis newtonian design is excellent for astrophotography. With fast optics and nice focal length, this scope produces great images of nebulae, galaxies and star clusters.\u003c\/div\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40481981530185,"sku":"ES8N","price":679.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/20509.jpg?v=1675379408"},{"product_id":"explore-scientific-62-40mm-2-waterproof-eyepiece","title":"Explore Scientific 40mm 62° 2\" Waterproof Eyepiece","description":"\u003cp data-end=\"307\" data-start=\"251\"\u003e\u003cstrong data-end=\"305\" data-start=\"251\"\u003eExplore Scientific 40mm 62° 2\" Waterproof Eyepiece\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"713\" data-start=\"309\"\u003eThe Explore Scientific 40mm 62° Series 2\" Eyepiece is a superb choice for deep-sky observers and planetary imagers looking to maximize field of view, eye relief, and contrast in one premium package. Designed with a wide 62-degree apparent field, this eyepiece delivers immersive views with edge-to-edge sharpness, excellent correction, and long-term durability thanks to its waterproof and purged design.\u003c\/p\u003e\n\u003cp data-end=\"1079\" data-start=\"715\"\u003eThis eyepiece is a great option for low-power sweeping of the night sky, especially when paired with larger focal length telescopes like Schmidt-Cassegrains, Dobsonians, or refractors. With its 40mm focal length and wide-angle design, it’s ideal for scanning open clusters, bright nebulae, and rich star fields with a sense of space and depth that’s hard to match.\u003c\/p\u003e\n\u003ch3 data-end=\"1116\" data-start=\"1081\"\u003eWide Field, Comfortable Viewing\u003c\/h3\u003e\n\u003cp data-end=\"1676\" data-start=\"1118\"\u003eThe 62° apparent field of view strikes a smart balance between expansive sky coverage and manageable size and weight. It's wide enough to feel immersive but without pushing into the realm of ultra-wide designs that sometimes trade off eye relief or introduce edge distortions. In fast focal ratio scopes, this eyepiece maintains a well-corrected image across the field, delivering pinpoint stars and crisp detail. It’s an especially attractive choice for observers who want a more natural, porthole-like view compared to narrower Plössl or Kellner eyepieces.\u003c\/p\u003e\n\u003ch3 data-end=\"1704\" data-start=\"1678\"\u003eExceptional Eye Relief\u003c\/h3\u003e\n\u003cp data-end=\"2032\" data-start=\"1706\"\u003eOne of the key advantages of this eyepiece is its long 28mm of eye relief. That makes it extremely comfortable to use—even for eyeglass wearers—without sacrificing field of view. The twist-up eyecup provides a customizable experience for those who prefer to observe without glasses, while still giving full access to the view.\u003c\/p\u003e\n\u003ch3 data-end=\"2079\" data-start=\"2034\"\u003eWaterproof and Argon-Purged for Longevity\u003c\/h3\u003e\n\u003cp data-end=\"2482\" data-start=\"2081\"\u003eLike all of Explore Scientific’s 62° series eyepieces, the 40mm is fully waterproof and filled with inert argon gas. This design prevents internal fogging, protects against fungus growth, and eliminates dust or moisture infiltration over time. Whether you’re observing in humid summer conditions or taking your scope into colder climates, this eyepiece is built to last and perform without compromise.\u003c\/p\u003e\n\u003ch3 data-end=\"2515\" data-start=\"2484\"\u003eOptical Design and Coatings\u003c\/h3\u003e\n\u003cp data-end=\"2900\" data-start=\"2517\"\u003eThis eyepiece uses a multi-element optical design with fully multi-coated lenses for superior light transmission and contrast. Internal baffling and blackened lens edges reduce internal reflections and scatter, delivering darker backgrounds and cleaner contrast between stars and nebulae. The result is a noticeably rich, high-contrast image that's ideal for low-light deep sky work.\u003c\/p\u003e\n\u003ch3 data-end=\"2919\" data-start=\"2902\"\u003eCompatibility\u003c\/h3\u003e\n\u003cp data-end=\"3226\" data-start=\"2921\"\u003eThe 40mm 62° eyepiece features a 2\" barrel format, making it compatible with any telescope that accepts standard 2\" eyepieces. It's also threaded for 2\" filters, allowing easy integration of nebula filters, light pollution reduction filters, or broadband contrast filters to enhance your viewing sessions.\u003c\/p\u003e\n\u003cp data-end=\"3598\" data-start=\"3228\"\u003eThis eyepiece performs particularly well in telescopes with longer focal ratios (f\/8 and up), but remains a solid performer even in faster optical systems. In large Dobsonian reflectors, it can offer up to a 1.4°–1.7° true field, depending on your scope’s focal length—perfect for capturing the full extent of large objects like the North America Nebula or the Pleiades.\u003c\/p\u003e\n\u003chr data-end=\"3603\" data-start=\"3600\"\u003e\n\u003cp data-end=\"3620\" data-start=\"3605\"\u003e\u003cstrong data-end=\"3620\" data-start=\"3605\"\u003eIn Summary:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"4018\" data-start=\"3622\"\u003eThe Explore Scientific 40mm 62° 2\" Waterproof Eyepiece is an excellent choice for the serious observer seeking immersive wide-field views, premium build quality, and long-term performance. Its optical clarity, generous eye relief, and rugged construction make it a go-to for low-power observing sessions, whether you're sweeping the Milky Way or framing entire star clusters in one majestic view.\u003c\/p\u003e\n\u003cp data-end=\"4212\" data-start=\"4020\"\u003eIf you're ready to take your visual astronomy to the next level, this eyepiece offers an exceptional balance of performance and value—and it’s backed by Explore Scientific’s lifetime warranty.\u003c\/p\u003e\n\u003ch2\u003eTech Details:\u003c\/h2\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cmeta charset=\"UTF-8\"\u003e\n\u003ctable id=\"product-attribute-specs-table\" class=\"table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBarrel Size\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEye Relief\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e28.2mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eField of view\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e62°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eField Stop\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e42.2mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Length\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e40mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e23.6 ozs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eLimited Lifetime\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40481981825097,"sku":"ES6240","price":259.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/20562.jpg?v=1675379427"},{"product_id":"explore-scientific-62-32mm-2-waterproof-eyepiece","title":"Explore Scientific  32mm 62° 2\" Waterproof Eyepiece","description":"\u003ch3 data-start=\"254\" data-end=\"308\"\u003eExplore Scientific 32mm 62° 2\" Waterproof Eyepiece\u003c\/h3\u003e\n\u003cp data-start=\"310\" data-end=\"693\"\u003eIf you're aiming to take full advantage of your telescope's 2\" focuser for wide-field, low-power views, the \u003cstrong data-start=\"418\" data-end=\"469\"\u003eExplore Scientific 32mm 62° Waterproof Eyepiece\u003c\/strong\u003e delivers beautifully. Designed for immersive deep-sky observing with excellent optical correction, this eyepiece brings expansive vistas and solid mechanical build quality together in a package that won’t empty your wallet.\u003c\/p\u003e\n\u003ch4 data-start=\"695\" data-end=\"755\"\u003eExpansive 62° Apparent Field with True Wide-Field Views\u003c\/h4\u003e\n\u003cp data-start=\"757\" data-end=\"1070\"\u003eThe 62° apparent field of view gives you that wide-screen experience, offering noticeably more sky than standard Plössls or narrow-field designs. In a 32mm focal length, this eyepiece is a low-power powerhouse—excellent for large targets like the Veil Nebula, the Double Cluster, or simply sweeping the Milky Way.\u003c\/p\u003e\n\u003cp data-start=\"1072\" data-end=\"1339\"\u003eBecause it's a 2\" eyepiece, you’re getting \u003cstrong data-start=\"1115\" data-end=\"1145\"\u003emaximum true field of view\u003c\/strong\u003e possible in your scope without stepping into exotic ultra-wide territory or using focal reducers. It makes a perfect finder eyepiece, and a favorite for relaxing, wide-angle deep-sky observing.\u003c\/p\u003e\n\u003ch4 data-start=\"1341\" data-end=\"1391\"\u003eWaterproof and Nitrogen-Purged for Durability\u003c\/h4\u003e\n\u003cp data-start=\"1393\" data-end=\"1654\"\u003eLike all of Explore Scientific’s eyepieces in this series, the 32mm 62° is \u003cstrong data-start=\"1468\" data-end=\"1508\"\u003efully waterproof and nitrogen-purged\u003c\/strong\u003e. That’s not just a nice bonus—it’s a serious feature for anyone observing in dewy conditions, humid climates, or who values long-term durability.\u003c\/p\u003e\n\u003cp data-start=\"1656\" data-end=\"1865\"\u003eThe internal optics are sealed against fogging and moisture, and you can safely clean the exterior without worrying about internal damage. This level of ruggedness is a rarity in eyepieces at this price point.\u003c\/p\u003e\n\u003ch4 data-start=\"1867\" data-end=\"1917\"\u003eFully Multi-Coated Optics with Crisp Contrast\u003c\/h4\u003e\n\u003cp data-start=\"1919\" data-end=\"2220\"\u003eAll air-to-glass surfaces are \u003cstrong data-start=\"1949\" data-end=\"1971\"\u003efully multi-coated\u003c\/strong\u003e, helping deliver high light transmission and minimizing internal reflections. You’ll get bright, contrast-rich images with crisp star points and low scatter—ideal for deep sky, open clusters, and even lunar observing when paired with a good filter.\u003c\/p\u003e\n\u003cp data-start=\"2222\" data-end=\"2504\"\u003eWhile optimized for visual performance in f\/7 and slower scopes, it still performs admirably in faster instruments, with strong center sharpness and good off-axis correction. The field curvature and edge softness typical in wider 2\" eyepieces are kept in check nicely for the class.\u003c\/p\u003e\n\u003ch4 data-start=\"2506\" data-end=\"2554\"\u003eSturdy Construction, Comfortable Eye Relief\u003c\/h4\u003e\n\u003cp data-start=\"2556\" data-end=\"2849\"\u003eThe eyepiece body is all metal with a textured rubber grip, giving it a high-quality feel that’s also practical in cold or damp observing conditions. It features a \u003cstrong data-start=\"2720\" data-end=\"2748\"\u003etwist-up rubber eyeguard\u003c\/strong\u003e for adjustable comfort, especially helpful when transitioning between eyeglasses and direct viewing.\u003c\/p\u003e\n\u003cp data-start=\"2851\" data-end=\"2987\"\u003eWith \u003cstrong data-start=\"2856\" data-end=\"2878\"\u003e22mm of eye relief\u003c\/strong\u003e, this eyepiece remains comfortable even during extended sessions, and it’s friendly for most eyeglass users.\u003c\/p\u003e\n\u003ch4 data-start=\"2989\" data-end=\"3030\"\u003eBuilt for 2\" Focusers—No Compromises\u003c\/h4\u003e\n\u003cp data-start=\"3032\" data-end=\"3332\"\u003eThis is a true 2\" eyepiece, so you’ll need a 2\" diagonal or focuser to use it. But with that comes the benefit of a significantly wider \u003cstrong data-start=\"3168\" data-end=\"3190\"\u003etrue field of view\u003c\/strong\u003e compared to 1.25\" eyepieces of similar focal length. It’s an excellent match for Dobsonians, large refractors, and SCTs with 2\" visual backs.\u003c\/p\u003e\n\u003cp data-start=\"3334\" data-end=\"3480\"\u003eIt’s also threaded for 2\" filters, so you can pair it with your favorite narrowband or broadband filters to enhance nebulae and dark-sky contrast.\u003c\/p\u003e\n\u003cul data-start=\"3506\" data-end=\"3763\"\u003e\u003c\/ul\u003e\n\u003ch4 data-start=\"3765\" data-end=\"3818\"\u003eExcellent Value in a True Wide-Field 2\" Eyepiece\u003c\/h4\u003e\n\u003cp data-start=\"3820\" data-end=\"4149\"\u003eFor visual astronomers who want expansive, low-power views in a rugged, reliable package, the Explore Scientific 32mm 62° 2\" eyepiece delivers. Whether you’re using it as your primary deep-sky viewer or as a complement to a wider set, it offers premium features—like waterproofing and long eye relief—without a premium price tag.\u003c\/p\u003e\n\u003ch2\u003eTech Details:\u003c\/h2\u003e\n\u003ctable id=\"product-attribute-specs-table\" class=\"table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBarrel Size\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e2\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEye Relief\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e22.2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eField of view\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e62°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eField Stop\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e33.6mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Length\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e32mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e14.8 ozs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eLimited Lifetime\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40481981857865,"sku":"ES6232","price":119.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/20561.jpg?v=1675379429"},{"product_id":"explore-scientific-62-26mm-1-25-waterproof-eyepiece","title":"Explore Scientific 26mm 62° 1.25\" Waterproof Eyepiece","description":"\u003cp data-end=\"327\" data-start=\"270\"\u003e\u003cstrong data-end=\"327\" data-start=\"270\"\u003eExplore Scientific 26mm 62° 1.25\" Waterproof Eyepiece\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"717\" data-start=\"329\"\u003eThe \u003cem data-end=\"378\" data-start=\"333\"\u003eExplore Scientific 26mm 62° Series Eyepiece\u003c\/em\u003e offers a perfect balance of generous eye relief, wide apparent field of view, and excellent optical performance in a compact, user-friendly 1.25\" format. Designed with the discerning visual observer in mind, this eyepiece makes an excellent low-to-mid power choice for deep-sky viewing, open clusters, and sweeping views of the Milky Way.\u003c\/p\u003e\n\u003ch3 data-end=\"774\" data-start=\"719\"\u003eOptimized Viewing with a 62° Apparent Field of View\u003c\/h3\u003e\n\u003cp data-end=\"1182\" data-start=\"776\"\u003eThe 62-degree apparent field offers a wider view than traditional Plössls and Orthoscopics, without venturing into ultra-wide territory. This means you get a richly immersive experience with less chance of field distortion, and no need to constantly nudge your telescope to keep objects centered. It's wide enough to feel expansive, but tight enough to retain excellent contrast and edge-to-edge sharpness.\u003c\/p\u003e\n\u003cp data-end=\"1639\" data-start=\"1184\"\u003eWith its 26mm focal length, this eyepiece excels at providing bright, low-power views in most telescopes. It's particularly well-matched to short-to-medium focal length refractors and fast Dobsonians, where it can deliver generous true fields for locating and observing large deep-sky objects. Globular clusters like M13, open clusters like the Double Cluster, or sweeping star fields near Sagittarius all show up beautifully framed and richly contrasted.\u003c\/p\u003e\n\u003ch3 data-end=\"1698\" data-start=\"1641\"\u003eWaterproof and Argon Purged for Long-Term Reliability\u003c\/h3\u003e\n\u003cp data-end=\"2107\" data-start=\"1700\"\u003eExplore Scientific's 62° Series eyepieces are fully waterproof and argon-purged. While that might sound like overkill for an eyepiece, it's a real advantage when it comes to internal fogging, dust, and fungal contamination. Whether you're observing from a humid backyard, a dewy mountain top, or a high-altitude star party, you’ll appreciate the sealed design that keeps your optics clean and moisture-free.\u003c\/p\u003e\n\u003cp data-end=\"2299\" data-start=\"2109\"\u003eThe argon purging also means these eyepieces can handle the temperature swings that often occur during nighttime observing sessions. You’ll spend less time defogging and more time observing.\u003c\/p\u003e\n\u003ch3 data-end=\"2352\" data-start=\"2301\"\u003eExcellent Optical Performance and Build Quality\u003c\/h3\u003e\n\u003cp data-end=\"2662\" data-start=\"2354\"\u003eThe eyepiece features fully multi-coated optics and blackened lens edges to maximize light transmission and minimize internal reflections. Combined with precision machining and a hard-anodized barrel, the 26mm 62° delivers excellent light control, mechanical durability, and a comfortable viewing experience.\u003c\/p\u003e\n\u003cp data-end=\"2994\" data-start=\"2664\"\u003eEye relief is generous enough to accommodate eyeglass wearers, and the fold-down rubber eyecup adds versatility for different viewing preferences. The standard 1.25” barrel is compatible with virtually all telescope focusers and diagonals, and the safety undercut ensures secure retention in compression ring or set-screw holders.\u003c\/p\u003e\n\u003ch3 data-end=\"3038\" data-start=\"2996\"\u003eA Great Value for Discerning Observers\u003c\/h3\u003e\n\u003cp data-end=\"3331\" data-start=\"3040\"\u003eThe \u003cem data-end=\"3080\" data-start=\"3044\"\u003eExplore Scientific 26mm 62° Series\u003c\/em\u003e is an ideal upgrade from basic starter eyepieces. Whether you're looking to expand your set with a high-quality low-power eyepiece or seeking a reliable, well-made tool for wide-field deep sky work, this model fits the bill without breaking the bank.\u003c\/p\u003e\n\u003cp data-end=\"3451\" data-start=\"3333\"\u003eIt’s a favorite among budget-conscious enthusiasts who want performance and durability in a sleek, waterproof package.\u003c\/p\u003e\n\u003chr data-end=\"3782\" data-start=\"3779\"\u003e\n\u003cp data-end=\"4030\" data-start=\"3784\"\u003eWhether you’re chasing dark sky gems or just enjoying casual sweeps through the Milky Way, the \u003cem data-end=\"3917\" data-start=\"3879\"\u003eExplore Scientific 26mm 62° Eyepiece\u003c\/em\u003e gives you the field of view, clarity, and construction you need to make the most of every night under the stars.\u003c\/p\u003e\n\u003ch2\u003eTech Details: \u003c\/h2\u003e\n\u003ctable id=\"product-attribute-specs-table\" class=\"table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBarrel Size\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEye Relief\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e19.3mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eField of view\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e62°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eField Stop\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e27.3mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Length\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e26mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e8.2 ozs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eLimited Lifetime\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40481981890633,"sku":"ES6226","price":79.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/20560.jpg?v=1675379431"},{"product_id":"explore-scientific-62-20mm-1-25-waterproof-eyepiece","title":"Explore Scientific 62° 20mm 1.25\" Waterproof Eyepiece","description":"\u003cp data-start=\"277\" data-end=\"334\"\u003e\u003cstrong data-start=\"277\" data-end=\"334\"\u003eExplore Scientific 20mm 62° 1.25\" Waterproof Eyepiece\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"336\" data-end=\"788\"\u003eThe Explore Scientific 20mm 62° Series Eyepiece offers an outstanding blend of comfort, optical performance, and durability at a price that makes it an excellent value for both beginner and seasoned astronomers. This 1.25\" format eyepiece is part of Explore Scientific’s mid-range 62° Apparent Field of View (AFOV) line, offering a generous viewing window and high-contrast images—ideal for deep sky observing, lunar viewing, and casual planetary work.\u003c\/p\u003e\n\u003cp data-start=\"790\" data-end=\"847\"\u003e\u003cstrong data-start=\"790\" data-end=\"847\"\u003eWide Field Performance for a Richer Visual Experience\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"849\" data-end=\"1297\"\u003eWith a 62° apparent field of view, the 20mm eyepiece delivers immersive views that go well beyond what standard Plössls or Kellners can provide. Whether you’re scanning star fields in Sagittarius or framing open clusters like the Pleiades, the wider field allows more context in a single glance. At 20mm focal length, it’s especially effective for low to medium power views, making it a great all-around choice for small to mid-aperture telescopes.\u003c\/p\u003e\n\u003cp data-start=\"1299\" data-end=\"1349\"\u003e\u003cstrong data-start=\"1299\" data-end=\"1349\"\u003eEnhanced Optical Coatings for Maximum Contrast\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1351\" data-end=\"1691\"\u003eEach lens element in the Explore Scientific 62° Series is fully multi-coated with their proprietary EMD (Enhanced Multi-Layer Deposition) coatings. These coatings improve light transmission and reduce internal reflections that can degrade image quality. Edge-blackened optics further enhance contrast by minimizing stray light and ghosting.\u003c\/p\u003e\n\u003cp data-start=\"1693\" data-end=\"1755\"\u003e\u003cstrong data-start=\"1693\" data-end=\"1755\"\u003eWaterproof and Argon-Purged Housing for Rugged Reliability\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1757\" data-end=\"2214\"\u003eLike all eyepieces in the Explore Scientific 62° Series, the 20mm is fully waterproof and argon-purged. This unique feature at this price point protects the internal lens elements from fogging, moisture, dust, and fungal growth—ideal for observers in humid environments or those who frequently observe under the open sky. Waterproof construction also makes cleaning the lens surfaces much safer and easier, since moisture can't penetrate the sealed housing.\u003c\/p\u003e\n\u003cp data-start=\"2216\" data-end=\"2263\"\u003e\u003cstrong data-start=\"2216\" data-end=\"2263\"\u003eGenerous Eye Relief and Comfortable Viewing\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"2265\" data-end=\"2604\"\u003eWith 15mm of eye relief, the 20mm eyepiece offers comfortable viewing even for eyeglass wearers. The fold-down rubber eyecup adds to the user-friendly experience by providing a stable and adjustable interface between your eye and the eyepiece. The optical design maintains edge-to-edge sharpness with minimal field curvature or distortion.\u003c\/p\u003e\n\u003cp data-start=\"2606\" data-end=\"2642\"\u003e\u003cstrong data-start=\"2606\" data-end=\"2642\"\u003e1.25\" Barrel with Filter Threads\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"2644\" data-end=\"2904\"\u003eThe standard 1.25\" barrel fits all modern diagonals and focusers and includes standard threading for 1.25\" filters. You can easily pair it with your favorite planetary or light pollution filters for tailored performance under a variety of observing conditions.\u003c\/p\u003e\n\u003cp data-start=\"2906\" data-end=\"2950\"\u003e\u003cstrong data-start=\"2906\" data-end=\"2950\"\u003eA Great Eyepiece for All Telescope Types\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"2952\" data-end=\"3281\"\u003eThis eyepiece performs well across a broad range of telescopes, from fast f\/5 Newtonians and Dobsonians to longer focal length refractors and SCTs. Its combination of moderate magnification and wide field makes it versatile for a wide range of targets—from galaxies and globular clusters to the Moon and larger planetary nebulae.\u003cstrong data-start=\"3283\" data-end=\"3302\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"3535\" data-end=\"3591\"\u003e\u003cstrong data-start=\"3535\" data-end=\"3591\"\u003eWhy Choose the Explore Scientific 20mm 62° Eyepiece?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"3593\" data-end=\"3871\"\u003eIf you're looking to upgrade from basic eyepieces without jumping to premium price points, the Explore Scientific 20mm 62° is an ideal stepping stone. Its combination of sharpness, field of view, and waterproof durability make it a long-term addition to any eyepiece collection.\u003c\/p\u003e\n\u003cp data-start=\"3873\" data-end=\"4143\"\u003eThis is an eyepiece that invites you to stay at the eyepiece longer. Whether you're showing off the Andromeda Galaxy to friends or losing yourself in the rifts of the Milky Way, the 20mm 62° delivers a clean, wide window into the universe—at a price that’s hard to beat.\u003c\/p\u003e\n\u003ch2\u003eTech Details:\u003c\/h2\u003e\n\u003ctable id=\"product-attribute-specs-table\" class=\"table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBarrel Size\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEye Relief\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e14.8mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eField of view\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e62°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eField Stop\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e20.9mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Length\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e20mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e5 ozs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eLimited Lifetime\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40481981923401,"sku":"ES6220","price":69.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/20559.jpg?v=1675379434"},{"product_id":"explore-scientific-62-14mm-1-25-waterproof-eyepiece","title":"Explore Scientific 62° 14mm 1.25\" Waterproof Eyepiece","description":"\u003cp data-end=\"332\" data-start=\"268\"\u003e\u003cstrong data-end=\"332\" data-start=\"268\"\u003eExplore Scientific 14mm 62° Series 1.25\" Waterproof Eyepiece\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"759\" data-start=\"334\"\u003eThe Explore Scientific 14mm 62° Series eyepiece is an excellent choice for amateur and seasoned astronomers looking for a balance of wide-field performance, contrast, and long-term durability—all in a lightweight and affordable 1.25\" format. This eyepiece offers a moderately wide 62-degree apparent field of view, providing an immersive visual experience without the bulk and weight often associated with ultra-wide designs.\u003c\/p\u003e\n\u003ch3 data-end=\"816\" data-start=\"761\"\u003eA Balanced Field for Deep Sky and Planetary Viewing\u003c\/h3\u003e\n\u003cp data-end=\"1301\" data-start=\"818\"\u003eWith a 14mm focal length, this eyepiece hits a sweet spot for a variety of telescopes and observing targets. In medium to long focal length scopes, it provides a magnification range well-suited for resolving lunar detail, teasing out planetary surface features, and framing smaller deep sky objects like globular clusters, planetary nebulae, and bright galaxies. It also makes for a great mid-power eyepiece in faster telescopes, giving users clean star fields and pleasing contrast.\u003c\/p\u003e\n\u003ch3 data-end=\"1362\" data-start=\"1303\"\u003e62° Apparent Field: Wide Enough, Without the Distortion\u003c\/h3\u003e\n\u003cp data-end=\"1791\" data-start=\"1364\"\u003eWhile some eyepieces chase ultra-wide fields at the cost of edge performance, the 62° Series from Explore Scientific keeps things well-corrected. The 62° apparent field is wide enough to give that “spacewalk” feel, but still easy to take in without excessive eye movement. For many observers, especially those transitioning from Plössls or other narrow-field designs, this field of view is a significant and satisfying upgrade.\u003c\/p\u003e\n\u003ch3 data-end=\"1845\" data-start=\"1793\"\u003eFully Multi-Coated Optics and Excellent Contrast\u003c\/h3\u003e\n\u003cp data-end=\"2295\" data-start=\"1847\"\u003eThe 14mm 62° eyepiece features fully multi-coated optics, optimized to enhance light transmission across the entire visible spectrum. These coatings reduce internal reflections and light scatter, helping to boost contrast—particularly important when observing faint nebulae or the subtle banding on Jupiter. The internal baffling and blackened lens edges further assist in suppressing stray light, keeping your views as sharp and clean as possible.\u003c\/p\u003e\n\u003ch3 data-end=\"2337\" data-start=\"2297\"\u003eArgon-Purged Waterproof Construction\u003c\/h3\u003e\n\u003cp data-end=\"2775\" data-start=\"2339\"\u003eExplore Scientific sets itself apart with its patented waterproof eyepiece design. This 14mm eyepiece is sealed and purged with inert argon gas to prevent internal fogging, resist fungal growth, and protect the optics from moisture and environmental contaminants. Whether you’re observing in a humid climate or want to rinse the eyepiece after a dusty star party, the waterproof design gives you peace of mind and long-term reliability.\u003c\/p\u003e\n\u003ch3 data-end=\"2831\" data-start=\"2777\"\u003eComfortable Eye Relief and Fold-Down Rubber Eyecup\u003c\/h3\u003e\n\u003cp data-end=\"3238\" data-start=\"2833\"\u003eWith approximately 15mm of eye relief, the Explore Scientific 14mm 62° is comfortable for most users, including those who wear glasses. The included rubber eyecup can be folded down if needed, allowing eyeglass wearers to access the full field of view without hassle. The 1.25\" barrel is threaded for standard filters, allowing easy use of light pollution, planetary, or UHC filters to enhance your views.\u003c\/p\u003e\n\u003ch3 data-end=\"3280\" data-start=\"3240\"\u003eDesigned for the Field—Built to Last\u003c\/h3\u003e\n\u003cp data-end=\"3739\" data-start=\"3282\"\u003eLike all eyepieces in Explore Scientific’s lineup, the 14mm 62° Series is built to perform under real observing conditions. Whether you're using it on a fast Dobsonian, a compact refractor, or a longer focal length SCT, it delivers consistently high performance across a range of telescope designs. Its durable construction, sealed optics, and field-ready design make it a smart choice for observers who want gear that can keep up with them under the stars.\u003c\/p\u003e\n\u003chr data-end=\"4050\" data-start=\"4047\"\u003e\n\u003cp data-end=\"4345\" data-start=\"4052\"\u003eIf you're looking for a high-performance eyepiece that offers an expansive field of view, clean optics, and rugged durability at a modest price point, the Explore Scientific 14mm 62° is a compelling option. It brings modern eyepiece engineering to the everyday observer—no compromise required.\u003c\/p\u003e\n\u003ch2\u003eTech Details: \u003c\/h2\u003e\n\u003ctable class=\"table\" id=\"product-attribute-specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBarrel Size\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEye Relief\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e10.4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eField of view\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e62°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eField Stop\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e14.7mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Length\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e14mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eLimited Lifetime\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40481981988937,"sku":"ES6214","price":69.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/20558.jpg?v=1675379437"},{"product_id":"explore-scientific-62-9mm-1-25-waterproof-eyepiece","title":"Explore Scientific 9mm 62° 1.25\" Waterproof Eyepiece","description":"\u003cp data-start=\"274\" data-end=\"330\"\u003e\u003cstrong data-start=\"274\" data-end=\"330\"\u003eExplore Scientific 9mm 62° 1.25\" Waterproof Eyepiece\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"332\" data-end=\"787\"\u003eThe Explore Scientific 9mm 62° Series 1.25\" eyepiece brings together solid performance, quality optics, and weather-resistant durability in a compact and affordable package. It’s a favorite focal length for high-power observing with excellent eye relief and a wide field that doesn’t feel cramped — making it an excellent choice for planetary, lunar, and double star observation, as well as for resolving detail in globular clusters and planetary nebulae.\u003c\/p\u003e\n\u003cp data-start=\"789\" data-end=\"1200\"\u003eDesigned with the amateur astronomer in mind, the 9mm 62° Series eyepiece offers a comfortable balance between magnification and usability. The 62-degree apparent field of view provides a generous window onto the cosmos, significantly wider than traditional Plössl designs, allowing for more immersive views without the need for constant nudging of the scope — especially useful when observing without tracking.\u003c\/p\u003e\n\u003cp data-start=\"1202\" data-end=\"1259\"\u003e\u003cstrong data-start=\"1202\" data-end=\"1259\"\u003eHigh-Contrast Optics with Fully Multi-Coated Elements\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1261\" data-end=\"1683\"\u003eExplore Scientific’s 62° Series eyepieces use fully multi-coated optics to maximize light transmission and contrast. Each glass element is carefully matched and precision polished to minimize light scatter, reduce ghosting, and preserve image sharpness across the entire field. Edge-blackened optics further enhance contrast and reduce internal reflections, especially when viewing bright targets like Jupiter or the Moon.\u003c\/p\u003e\n\u003cp data-start=\"1685\" data-end=\"2125\"\u003eThe 9mm focal length is particularly well-suited for mid-to-high power views with most telescopes. In an 8\" f\/10 Schmidt-Cassegrain, it delivers approximately 222x magnification, ideal for bringing out detail on Saturn’s rings or resolving the core of M13. With shorter focal length refractors or Newtonians, it becomes a planetary workhorse, capable of teasing out fine surface features on Mars or subtle color differences in double stars.\u003c\/p\u003e\n\u003cp data-start=\"2127\" data-end=\"2181\"\u003e\u003cstrong data-start=\"2127\" data-end=\"2181\"\u003eWaterproof and Argon-Purged for Maximum Durability\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"2183\" data-end=\"2619\"\u003eLike all eyepieces in the Explore Scientific waterproof series, the 9mm 62° model is sealed and purged with dry argon gas. This protects the internal lens elements from moisture, dust, and internal fogging — a major advantage for observers who deal with humidity, dew, or temperature changes throughout the night. It also means you can clean the outer optics safely and thoroughly without worrying about compromising the internal seals.\u003c\/p\u003e\n\u003cp data-start=\"2621\" data-end=\"2865\"\u003eThe waterproof design makes this eyepiece a great companion for field use, public outreach, or any situation where gear might be exposed to less-than-perfect conditions. It’s peace of mind knowing your investment is protected from the elements.\u003c\/p\u003e\n\u003cp data-start=\"2867\" data-end=\"2914\"\u003e\u003cstrong data-start=\"2867\" data-end=\"2914\"\u003eComfortable Eye Relief in a Compact Package\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"2916\" data-end=\"3324\"\u003eWith 15mm of eye relief, the 9mm 62° Series provides a comfortable viewing experience for most observers, including those who wear glasses. The fold-down rubber eyecup offers additional comfort and helps block stray light from entering around the eye. The 1.25\" barrel is threaded for standard filters and features a safety undercut to help prevent accidental slips when securing it in a diagonal or focuser.\u003c\/p\u003e\n\u003cp data-start=\"3326\" data-end=\"3511\"\u003eDespite its rugged construction and premium features, the 9mm remains lightweight and compact — an excellent fit for grab-and-go setups or travel kits where every ounce and inch counts.\u003c\/p\u003e\n\u003cp data-start=\"3513\" data-end=\"3570\"\u003e\u003cstrong data-start=\"3513\" data-end=\"3570\"\u003ePerfect for Expanding Your High-Power Eyepiece Lineup\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"3572\" data-end=\"3895\"\u003eIf you're looking to upgrade from stock eyepieces or round out your collection with a dependable, wide-field, high-magnification option, the Explore Scientific 9mm 62° is a smart choice. It combines optical quality, field performance, and build durability in a single, affordable package that punches well above its weight.\u003c\/p\u003e\n\u003cp data-start=\"3897\" data-end=\"4030\"\u003eWhether you're chasing tight lunar rilles, crisp planetary detail, or tight double stars, this eyepiece delivers — night after night.\u003c\/p\u003e\n\u003ch2\u003eTech Details: \u003c\/h2\u003e\n\u003ctable class=\"table\" id=\"product-attribute-specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBarrel Size\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEye Relief\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e12.6mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eField of view\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e62°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Length\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e9mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eLimited Lifetime\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40481982021705,"sku":"ES6209","price":69.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/20557.jpg?v=1675379440"},{"product_id":"explore-scientific-62-5-5mm-1-25-waterproof-eyepiece","title":"Explore Scientific 5.5mm 62° 1.25\" Waterproof Eyepiece","description":"\u003cdiv\u003e\n\u003cp data-end=\"361\" data-start=\"296\"\u003e\u003cstrong data-end=\"361\" data-start=\"296\"\u003eExplore Scientific 5.5mm 62° Series 1.25\" Waterproof Eyepiece\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"810\" data-start=\"363\"\u003eIf you’re looking to pull in crisp planetary detail, split tight double stars, or take advantage of excellent seeing on deep-sky targets, the Explore Scientific 5.5mm 62° Series eyepiece is a high-performance tool designed to deliver sharp, contrast-rich views across a broad range of telescopes. With a 62° apparent field of view, this compact 1.25\" eyepiece strikes a sweet spot between immersive wide-angle views and pinpoint optical precision.\u003c\/p\u003e\n\u003ch3 data-end=\"864\" data-start=\"812\"\u003eOptical Performance That Punches Above Its Price\u003c\/h3\u003e\n\u003cp data-end=\"1441\" data-start=\"866\"\u003eThe 5.5mm focal length makes this eyepiece ideal for high-magnification observing, especially when paired with short to medium focal length refractors or catadioptric telescopes. Whether you're teasing out subtle details on Jupiter’s belts or chasing tight planetary nebulae, the eyepiece maintains excellent sharpness across the field. The fully multi-coated optics and blackened lens edges work together to minimize internal reflections and maximize light transmission. Expect rich contrast, well-controlled ghosting, and impressive edge-to-edge clarity—even at high power.\u003c\/p\u003e\n\u003ch3 data-end=\"1488\" data-start=\"1443\"\u003eComfortable Eye Relief, Thoughtful Design\u003c\/h3\u003e\n\u003cp data-end=\"1802\" data-start=\"1490\"\u003eDespite its short focal length, this eyepiece offers a surprisingly comfortable 13mm of eye relief, making it accessible for most observers, including those who wear glasses. The twist-up rubber eyecup lets you easily adjust for personal comfort and helps with eye positioning to maintain the full field of view.\u003c\/p\u003e\n\u003cp data-end=\"2271\" data-start=\"1804\"\u003eIts sturdy anodized aluminum barrel is precisely machined and features a smooth, slip-free grip—even in colder conditions when gloves are a must. Like all Explore Scientific eyepieces in the 62° series, this model is nitrogen-purged and O-ring sealed, providing complete waterproof protection. That not only helps keep internal lenses fog-free during rapid temperature changes but also makes it easier to clean without worrying about dust or moisture creeping inside.\u003c\/p\u003e\n\u003ch3 data-end=\"2315\" data-start=\"2273\"\u003eVersatile Across a Range of Telescopes\u003c\/h3\u003e\n\u003cp data-end=\"2706\" data-start=\"2317\"\u003eCompatible with any telescope that accepts standard 1.25\" eyepieces, the Explore Scientific 5.5mm is a great match for refractors, Dobsonians, Schmidt-Cassegrains, and Maksutovs alike. Its moderate field of view is especially well-suited for tracking objects at high power, offering enough sky context to keep targets in view longer—particularly helpful if you’re using a non-driven mount.\u003c\/p\u003e\n\u003ch3 data-end=\"2746\" data-start=\"2708\"\u003eField-Tested and Observer Approved\u003c\/h3\u003e\n\u003cp data-end=\"3064\" data-start=\"2748\"\u003eAstronomy enthusiasts consistently report that this eyepiece holds up impressively well compared to far more expensive alternatives. With a reputation for excellent build quality and optical precision, it's a smart investment for those building out a serious high-power eyepiece collection without breaking the bank.\u003cmeta charset=\"UTF-8\"\u003e\u003c\/p\u003e\n\u003chr data-end=\"3374\" data-start=\"3371\"\u003eWhether you’re chasing planetary detail or resolving globular cluster cores, the Explore Scientific 5.5mm 62° eyepiece delivers excellent results night after night. It’s a rugged, refined, and reliable performer that brings out the best in your telescope.\u003c\/div\u003e\n\u003ch2\u003eTech Details:\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli data-end=\"3119\" data-start=\"3092\"\u003e\n\u003cstrong data-end=\"3111\" data-start=\"3094\"\u003eFocal Length:\u003c\/strong\u003e 5.5mm\u003c\/li\u003e\n\u003cli data-end=\"3155\" data-start=\"3120\"\u003e\n\u003cstrong data-end=\"3149\" data-start=\"3122\"\u003eApparent Field of View:\u003c\/strong\u003e 62°\u003c\/li\u003e\n\u003cli data-end=\"3182\" data-start=\"3156\"\u003e\n\u003cstrong data-end=\"3174\" data-start=\"3158\"\u003eBarrel Size:\u003c\/strong\u003e 1.25\"\u003c\/li\u003e\n\u003cli data-end=\"3207\" data-start=\"3183\"\u003e\n\u003cstrong data-end=\"3200\" data-start=\"3185\"\u003eEye Relief:\u003c\/strong\u003e 13mm\u003c\/li\u003e\n\u003cli data-end=\"3252\" data-start=\"3208\"\u003e\n\u003cstrong data-end=\"3231\" data-start=\"3210\"\u003eOptical Coatings:\u003c\/strong\u003e Fully Multi-Coated\u003c\/li\u003e\n\u003cli data-end=\"3307\" data-start=\"3253\"\u003e\n\u003cstrong data-end=\"3273\" data-start=\"3255\"\u003eWaterproofing:\u003c\/strong\u003e Nitrogen Purged \u0026amp; O-Ring Sealed\u003c\/li\u003e\n\u003cli data-end=\"3336\" data-start=\"3308\"\u003e\n\u003cstrong data-end=\"3321\" data-start=\"3310\"\u003eWeight:\u003c\/strong\u003e Approx. 7 oz\u003c\/li\u003e\n\u003cli data-end=\"3369\" data-start=\"3337\"\u003e\n\u003cstrong data-end=\"3363\" data-start=\"3339\"\u003eField Stop Diameter:\u003c\/strong\u003e 9.1mm\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40481982054473,"sku":"ES6205","price":69.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/20556.jpg?v=1675379443"},{"product_id":"explore-scientific-80mm-f-6-ed-classic-white-tube-fcd100-series-apo-triplet-refractor","title":"Explore Scientific 80mm f\/6 ED Classic White Tube FCD100 Series APO Triplet Refractor","description":"\u003cp\u003eThis 80mm Explore Scientific FCD100 ED triplet apochromatic refractor is loaded with premium glass for outstanding viewing sessions night after night\u003c\/p\u003e\n\u003cdiv class=\"heading\"\u003e\u003cstrong\u003eThis Explore Scientific ES80 Classic White FCD100 Series refractor has:\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"heading\"\u003e\n\u003cul\u003e\n\u003cli\u003e80mm f\/6 fully multicoated triplet optics using a Hoya FCD100, an FPL53-equivalent ED element\u003c\/li\u003e\n\u003cli\u003eDual-speed 2.5\" HEXagonal rack and pinion focuser with 10:1 ratio fine focusing\u003c\/li\u003e\n\u003cli\u003e2\" dielectric star diagonal with 2\" and 1.25\" brass compression ring eyepiece holders\u003c\/li\u003e\n\u003cli\u003eVixen-style dovetail mounting foot\u003c\/li\u003e\n\u003cli\u003ePre-mounted base for finderscope (finder not included)\u003c\/li\u003e\n\u003cli\u003eExtended lifetime warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003eThe Explore Scientific ES80 Classic White FCD100 refractor uses an ultra premium Hoya FCD100 ED glass element and state-of-the-art optical multicoatings in its apochromatic air-spaced ED triplet optics. The result is images that are free of the annoying halo of unfocused violet light (chromatic aberration) that mars the view of bright stars and solar system objects in lesser scopes, despite the fast focal ratio of the ES80, and even at very high magnifications.\u003c\/p\u003e\n\u003cp\u003eAt only 7 lbs, the Explore Scientific ES80FCD is a natural as a lightweight grab-and-go scope for spur-of-the-moment backyard astronomy. It also makes a top-notch travel scope to take across town or around the world. In addition, it's a nifty fast focal ratio astrograph to piggyback on a larger scope for serious wide field imaging, or you can even use it on a big altazimuth or equatorial mount as the heart of your observing system.\u003c\/p\u003e\n\u003cp\u003eConsidering its surprisingly low price for an apochromatic triplet, and in view of the great optical performance that comes as standard equipment, the 80mm Explore Scientific ES80 is a terrific buy!\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures of this telescope . . .\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAir-spaced FCD100 ED apochromatic triplet refractor optics:\u003c\/strong\u003e 80mm (3.1\") aperture, 480mm focal length, f\/6 focal ratio three-lens air-spaced optical system. The optics use a center lens element of ultra premium Hoya FCD100 (Dense Fluor Crown) glass, the Hoya equivalent of FPL-53 ED (Extra-low Dispersion) glass. This ED element produces superior sharpness and color correction by minimizing the chromatic aberration, the \"false\" color fringing seen around bright objects when light rays pass through standard crown-and-flint doublet objectives. The result is to get rid of spurious color halos and fringing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFully multicoated optics:\u003c\/strong\u003e The ES80 triplet objective lens has EMD™ (Enhanced Multilayer Deposition) antireflection multicoatings on all air-to-glass surfaces for high light transmission, minimal light scatter, and excellent contrast.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInternal light baffles:\u003c\/strong\u003e The aluminum tube has contrast-enhancing internal light baffles and a specially darkened tube interior to provide dark sky backgrounds and high terrestrial contrast.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCollimatable optics:\u003c\/strong\u003e One of the bonuses of owning a refractor is that, compared to standard reflector telescopes, they almost never require realigning of the optics (collimation). However, any air-spaced refractor telescope may require optical recentering if the lens elements are knocked out of alignment by a heavy blow during shipping or use. Removing the dew shield will give you access to the lens centering screws in the sides of the lens cell, which you can then adjust yourself by referring to the supplied instructions. You can also send your scope to Explore Scientific's Service Center for precision alignment. A standard service charge applies for factory realignment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDew shield:\u003c\/strong\u003e The supplied removable dew shield slows the formation of dew on the lens in cold weather to extend your undisturbed observing time. It also improves the contrast, similar to the effect of the lens shade on a camera lens, when observing during the day or when there is excessive ambient light at night, such as a neighbor's backyard security light. A single thumbscrew holds the dew shield in place, allowing the felt-lined dew shield to be removed from the scope, reversed, slid back onto the optical tube, and stored for transport in only a few seconds. The optical tube measures a compact 18.5\" long, including the dew shield. A thread-in metal dust cap for the optical tube is standard.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDual speed 2.5\" HEXagonal rack and pinion focuser:\u003c\/strong\u003e The precision-made no-backlash focuser has dual-speed focusing. There are two coarse focusing knobs. The right knob also has a smaller concentric knob with a 10:1 reduction gear microfine focusing ratio. This provides exceptionally precise image control during high magnification visual observing and critical DSLR or CCD imaging. The large focus knobs have ribbed gripping surfaces so they are easy to operate, even while wearing gloves or mittens in cold weather.  The focuser is quite heavy duty and can hold up to 10 pounds of astronomical gear.\u003c\/p\u003e\n\u003cp\u003eThe focuser drawtube has a scale marked in centimeters and 1mm increments. This lets you note individual focuser positions for easy return to the correct focus when switching between visual use and photography. Two knobs underneath the focuser lets you adjust the tension on the drawtube to accommodate varying eyepiece\/photo accessory loads, as well as firmly lock in a photographic focus. The focuser has a non-marring 2\" brass compression ring equipment holder.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2\" dielectric star diagonal and compression ring eyepiece holders:\u003c\/strong\u003e The supplied standard equipment 2\" mirror star diagonal of the ES80CF slips into the focuser drawtube's 2\" eyepiece\/accessory holder. The 2\" diagonal has 99% reflectivity dielectric mirror coatings for high light transmission. The star diagonal uses a non-marring soft brass compression ring to hold 2\" eyepieces in place. The compression ring won't scratch the barrel of your 2\" eyepieces as an ordinary thumbscrew can.\u003c\/p\u003e\n\u003cp\u003eA supplied 1.25\" accessory adapter slips into the 2\" diagonal to let you use 1.25\" eyepieces in the 2\" diagonal. The 1.25\" accessory adapter can also be inserted into the 2\" accessory holder on the focuser drawtube to let you use a 1.25\" image erecting diagonal, or 1.25\" photographic accessories. Like the 2\" eyepiece holder on the diagonal, the 1.25\" adapter also uses a non-marring soft brass compression ring to hold 1.25\" star diagonals and accessories in place.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMounting foot:\u003c\/strong\u003e For serious astronomy and astrophotography, the ES80 has an L-shaped dovetail mounting foot that is shaped to fit directly into the Vixen-style dovetail slot on the head of many of the most popular light to medium capacity altazimuth mounts and Celestron VX Series go-to German equatorials, among others. In addition, the dovetail has both 1\/4\"-20 and 3\/8\" holes that allow you to mount the 7.5 pound scope (when including diagonal) directly onto any good photo tripod for casual astronomy or daytime terrestrial observing. A knob on the body of the scope allows you to rotate the tube assembly and focuser to line up a camera in either a landscape or portrait orientation (or any orientation in between), then temporarily lock the focuser in that position.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eExtended lifetime warranty:\u003c\/strong\u003e This individually serial numbered Explore Scientific telescope is backed by a limited one year warranty, which will be extended to an Explore Scientific transferable Extended Life of the Product limited warranty when its warranty card is registered with Explore Scientific within 60 days of purchase.\u003c\/p\u003e\n\u003ch2\u003eTech Details:\u003c\/h2\u003e\n\u003ctable class=\"table\" id=\"product-attribute-specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eAperture\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e3.1\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBinary and Star Cluster Observation\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eVery Good\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Length\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e480mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Ratio\u003c\/th\u003e\n\u003ctd class=\"data\"\u003ef\/6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGalaxy and Nebula Observation\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eFair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHighest Useful Magnification\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e160x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLunar Observation\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eGreat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e7.5 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePlanetary Observation\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eVery Good\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eResolution\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1.45 arc seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTelescope Type\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eRefractor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eVisual Limiting Magnitude\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e12.0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1 year, extendable to lifetime\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003eSupplied Accessories: \u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eVixen-style dovetail mount\u003c\/li\u003e\n\u003cli\u003eRotating 2.5\" dual speed HEXagonal rack and pinion focuser\u003c\/li\u003e\n\u003cli\u003eMounting shoe for optional finderscope\u003c\/li\u003e\n\u003cli\u003eDust covers.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40481983266889,"sku":"ES80FCD","price":1119.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/fcd100_80mm_2_1_720x_02196ea5-c452-41ad-baa7-e2a58ab79ce2.jpg?v=1675379535"},{"product_id":"explore-scientific-102mm-f-7-classic-white-fcd100-ed-triplet-refractor","title":"Explore Scientific 102mm f\/7 Classic White FCD100 ED Triplet Refractor","description":"\u003ch2 data-start=\"303\" data-end=\"389\" class=\"\"\u003eExplore Scientific 102mm f\/7 Classic White FCD100 ED Triplet Apochromatic Refractor\u003c\/h2\u003e\n\u003cp data-start=\"391\" data-end=\"671\" class=\"\"\u003eThe \u003cstrong data-start=\"395\" data-end=\"466\"\u003eExplore Scientific 102mm f\/7 Classic White FCD100 Triplet Refractor\u003c\/strong\u003e offers the clarity, sharpness, and color correction that only a true apochromat can deliver—at a size and weight that’s easy to manage whether you’re imaging in the backyard or observing under dark skies.\u003c\/p\u003e\n\u003cp data-start=\"673\" data-end=\"1128\" class=\"\"\u003eWith its precision-crafted \u003cstrong data-start=\"700\" data-end=\"732\"\u003eair-spaced triplet objective\u003c\/strong\u003e using \u003cstrong data-start=\"739\" data-end=\"763\"\u003eHoya FCD100 ED glass\u003c\/strong\u003e, a robust \u003cstrong data-start=\"774\" data-end=\"799\"\u003ealuminum optical tube\u003c\/strong\u003e, and a rotating dual-speed 2.5\" focuser, the ES102 is an ideal scope for anyone seeking portable performance for serious visual and astrophotographic use. It combines exceptional optics with mechanical durability in a traditional white finish—making it a favorite for those who value performance and aesthetics in equal measure.\u003c\/p\u003e\n\u003chr data-start=\"1130\" data-end=\"1133\" class=\"\"\u003e\n\u003ch3 data-start=\"1135\" data-end=\"1213\" class=\"\"\u003eThe Goldilocks Refractor: Balanced Aperture, True Apochromatic Performance\u003c\/h3\u003e\n\u003cp data-start=\"1215\" data-end=\"1551\" class=\"\"\u003eThe 102mm (4\") aperture sits at a sweet spot for many astronomers—large enough to offer excellent light grasp and planetary resolution, yet small enough to be easily mounted, transported, and cooled. The \u003cstrong data-start=\"1419\" data-end=\"1441\"\u003e714mm focal length\u003c\/strong\u003e yields an f\/7 focal ratio, providing a versatile mix of wide-field imaging and high-magnification capability.\u003c\/p\u003e\n\u003cp data-start=\"1553\" data-end=\"1992\" class=\"\"\u003eAt the core of the optical system is \u003cstrong data-start=\"1590\" data-end=\"1600\"\u003eFCD100\u003c\/strong\u003e, Hoya’s premier extra-low dispersion glass—optically equivalent to Ohara’s legendary FPL-53. Paired with matched crown elements in a true \u003cstrong data-start=\"1739\" data-end=\"1775\"\u003eair-spaced triplet configuration\u003c\/strong\u003e, the result is a system that delivers \u003cstrong data-start=\"1814\" data-end=\"1848\"\u003enear-zero chromatic aberration\u003c\/strong\u003e. Bright stars remain tight and color-true, the Moon’s limb shows no unwanted violet fringing, and planetary details pop at high magnifications.\u003c\/p\u003e\n\u003cp data-start=\"1994\" data-end=\"2198\" class=\"\"\u003eEvery optical surface is coated with Explore Scientific’s proprietary \u003cstrong data-start=\"2064\" data-end=\"2107\"\u003eEMD™ multilayer antireflection coatings\u003c\/strong\u003e to maximize light throughput and contrast while minimizing ghosting and stray reflections.\u003c\/p\u003e\n\u003chr data-start=\"2200\" data-end=\"2203\" class=\"\"\u003e\n\u003ch3 data-start=\"2205\" data-end=\"2262\" class=\"\"\u003eTraditional Strength: The Classic White Aluminum Tube\u003c\/h3\u003e\n\u003cp data-start=\"2264\" data-end=\"2565\" class=\"\"\u003eUnlike its carbon fiber sibling, the \u003cstrong data-start=\"2301\" data-end=\"2339\"\u003eClassic White version of the ES102\u003c\/strong\u003e uses a traditional \u003cstrong data-start=\"2359\" data-end=\"2391\"\u003ealuminum tube and dew shield\u003c\/strong\u003e finished in a durable high-gloss enamel. While slightly heavier, this OTA retains excellent rigidity and offers time-tested performance in a variety of observing conditions.\u003c\/p\u003e\n\u003cp data-start=\"2567\" data-end=\"2828\" class=\"\"\u003eThe retractable dew shield slows the formation of dew on the objective and serves as a glare guard for daytime or light-polluted urban observing. The tube interior is fully blackened with \u003cstrong data-start=\"2755\" data-end=\"2775\"\u003einternal baffles\u003c\/strong\u003e to block off-axis light and preserve image contrast.\u003c\/p\u003e\n\u003chr data-start=\"2830\" data-end=\"2833\" class=\"\"\u003e\n\u003ch3 data-start=\"2835\" data-end=\"2893\" class=\"\"\u003ePrecision Focusing with a Dual-Speed Hexagonal Focuser\u003c\/h3\u003e\n\u003cp data-start=\"2895\" data-end=\"3042\" class=\"\"\u003eThe included \u003cstrong data-start=\"2908\" data-end=\"2934\"\u003e2.5\" hexagonal focuser\u003c\/strong\u003e is built for smooth, accurate, and stable performance. Designed with astrophotography in mind, it features:\u003c\/p\u003e\n\u003cul data-start=\"3044\" data-end=\"3553\"\u003e\n\u003cli data-start=\"3044\" data-end=\"3099\" class=\"\"\u003e\n\u003cp data-start=\"3046\" data-end=\"3099\" class=\"\"\u003e\u003cstrong data-start=\"3046\" data-end=\"3068\"\u003eDual-speed control\u003c\/strong\u003e with 10:1 microfine adjustment\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3100\" data-end=\"3164\" class=\"\"\u003e\n\u003cp data-start=\"3102\" data-end=\"3164\" class=\"\"\u003e\u003cstrong data-start=\"3102\" data-end=\"3124\"\u003eOversized drawtube\u003c\/strong\u003e for full illumination of camera sensors\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3165\" data-end=\"3234\" class=\"\"\u003e\n\u003cp data-start=\"3167\" data-end=\"3234\" class=\"\"\u003e\u003cstrong data-start=\"3167\" data-end=\"3192\"\u003eRotating focuser body\u003c\/strong\u003e for easy framing and eyepiece orientation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3235\" data-end=\"3316\" class=\"\"\u003e\n\u003cp data-start=\"3237\" data-end=\"3316\" class=\"\"\u003e\u003cstrong data-start=\"3237\" data-end=\"3269\"\u003eMillimeter-scale graduations\u003c\/strong\u003e on the drawtube for repeatable focus positions\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3317\" data-end=\"3401\" class=\"\"\u003e\n\u003cp data-start=\"3319\" data-end=\"3401\" class=\"\"\u003e\u003cstrong data-start=\"3319\" data-end=\"3345\"\u003eTension and lock knobs\u003c\/strong\u003e to prevent flexure or focus shift during long exposures\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3402\" data-end=\"3480\" class=\"\"\u003e\n\u003cp data-start=\"3404\" data-end=\"3480\" class=\"\"\u003e\u003cstrong data-start=\"3404\" data-end=\"3434\"\u003e2\" compression ring holder\u003c\/strong\u003e to secure accessories without marring barrels\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3481\" data-end=\"3553\" class=\"\"\u003e\n\u003cp data-start=\"3483\" data-end=\"3553\" class=\"\"\u003e\u003cstrong data-start=\"3483\" data-end=\"3518\"\u003eTwo included 2\" extension tubes\u003c\/strong\u003e to help dial in precise back focus\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"3555\" data-end=\"3558\" class=\"\"\u003e\n\u003ch3 data-start=\"3560\" data-end=\"3612\" class=\"\"\u003ePortable and Versatile for Visual or Imaging Use\u003c\/h3\u003e\n\u003cp data-start=\"3614\" data-end=\"3816\" class=\"\"\u003eWeighing in at just under 11 lbs, the ES102 is easy to carry and easy to mount. Its size makes it compatible with a wide variety of medium-duty mounts, and its performance makes it a natural choice for:\u003c\/p\u003e\n\u003cul data-start=\"3818\" data-end=\"4042\"\u003e\n\u003cli data-start=\"3818\" data-end=\"3857\" class=\"\"\u003e\n\u003cp data-start=\"3820\" data-end=\"3857\" class=\"\"\u003e\u003cstrong data-start=\"3820\" data-end=\"3857\"\u003eHigh-contrast planetary observing\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3858\" data-end=\"3904\" class=\"\"\u003e\n\u003cp data-start=\"3860\" data-end=\"3904\" class=\"\"\u003e\u003cstrong data-start=\"3860\" data-end=\"3904\"\u003eLunar exploration at high magnifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3905\" data-end=\"3956\" class=\"\"\u003e\n\u003cp data-start=\"3907\" data-end=\"3956\" class=\"\"\u003e\u003cstrong data-start=\"3907\" data-end=\"3956\"\u003eWide-field imaging of nebulae and star fields\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3957\" data-end=\"3989\" class=\"\"\u003e\n\u003cp data-start=\"3959\" data-end=\"3989\" class=\"\"\u003e\u003cstrong data-start=\"3959\" data-end=\"3989\"\u003eTravel and outreach events\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3990\" data-end=\"4042\" class=\"\"\u003e\n\u003cp data-start=\"3992\" data-end=\"4042\" class=\"\"\u003e\u003cstrong data-start=\"3992\" data-end=\"4042\"\u003eVisual deep sky work with rich field eyepieces\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"4044\" data-end=\"4288\" class=\"\"\u003eThe \u003cstrong data-start=\"4048\" data-end=\"4072\"\u003eVixen-style dovetail\u003c\/strong\u003e is compatible with most common equatorial and alt-az mounts. The \u003cstrong data-start=\"4138\" data-end=\"4167\"\u003edual split mounting rings\u003c\/strong\u003e include a \u003cstrong data-start=\"4178\" data-end=\"4200\"\u003etop stabilizer bar\u003c\/strong\u003e that doubles as a carry handle—making setup, breakdown, and transport a one-person job.\u003c\/p\u003e\n\u003cp data-start=\"4290\" data-end=\"4403\" class=\"\"\u003eA pre-installed \u003cstrong data-start=\"4306\" data-end=\"4321\"\u003efinder base\u003c\/strong\u003e allows easy installation of your choice of finderscope, reflex sight, or red dot.\u003c\/p\u003e\n\u003chr data-start=\"4405\" data-end=\"4408\" class=\"\"\u003e\n\u003ch3 data-start=\"4410\" data-end=\"4442\" class=\"\"\u003eLong-Term Warranty and Value\u003c\/h3\u003e\n\u003cp data-start=\"4444\" data-end=\"4779\" class=\"\"\u003eEach Explore Scientific 102mm Classic White Triplet is \u003cstrong data-start=\"4499\" data-end=\"4531\"\u003eindividually serial numbered\u003c\/strong\u003e and comes with a \u003cstrong data-start=\"4549\" data-end=\"4578\"\u003eone-year limited warranty\u003c\/strong\u003e. When registered within 60 days of purchase, the scope qualifies for Explore Scientific’s \u003cstrong data-start=\"4669\" data-end=\"4703\"\u003eLifetime Transferable Warranty\u003c\/strong\u003e—a rare and welcome benefit that protects your investment for years to come.\u003c\/p\u003e\n\u003chr data-start=\"4781\" data-end=\"4784\" class=\"\"\u003e\n\u003ch3 data-start=\"4786\" data-end=\"4804\" class=\"\"\u003eSpecifications\u003c\/h3\u003e\n\u003cul data-start=\"4806\" data-end=\"5429\"\u003e\n\u003cli data-start=\"4806\" data-end=\"4869\" class=\"\"\u003e\n\u003cp data-start=\"4808\" data-end=\"4869\" class=\"\"\u003e\u003cstrong data-start=\"4808\" data-end=\"4826\"\u003eOptical design\u003c\/strong\u003e: Air-spaced triplet apochromatic refractor\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4870\" data-end=\"4896\" class=\"\"\u003e\n\u003cp data-start=\"4872\" data-end=\"4896\" class=\"\"\u003e\u003cstrong data-start=\"4872\" data-end=\"4884\"\u003eAperture\u003c\/strong\u003e: 102mm (4\")\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4897\" data-end=\"4922\" class=\"\"\u003e\n\u003cp data-start=\"4899\" data-end=\"4922\" class=\"\"\u003e\u003cstrong data-start=\"4899\" data-end=\"4915\"\u003eFocal length\u003c\/strong\u003e: 714mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4923\" data-end=\"4945\" class=\"\"\u003e\n\u003cp data-start=\"4925\" data-end=\"4945\" class=\"\"\u003e\u003cstrong data-start=\"4925\" data-end=\"4940\"\u003eFocal ratio\u003c\/strong\u003e: f\/7\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4946\" data-end=\"4998\" class=\"\"\u003e\n\u003cp data-start=\"4948\" data-end=\"4998\" class=\"\"\u003e\u003cstrong data-start=\"4948\" data-end=\"4962\"\u003eGlass type\u003c\/strong\u003e: Hoya FCD100 ED (FPL-53 equivalent)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4999\" data-end=\"5060\" class=\"\"\u003e\n\u003cp data-start=\"5001\" data-end=\"5060\" class=\"\"\u003e\u003cstrong data-start=\"5001\" data-end=\"5022\"\u003eTube construction\u003c\/strong\u003e: Aluminum with retractable dew shield\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"5061\" data-end=\"5118\" class=\"\"\u003e\n\u003cp data-start=\"5063\" data-end=\"5118\" class=\"\"\u003e\u003cstrong data-start=\"5063\" data-end=\"5074\"\u003eFocuser\u003c\/strong\u003e: 2.5\" dual-speed rotating hexagonal focuser\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"5119\" data-end=\"5165\" class=\"\"\u003e\n\u003cp data-start=\"5121\" data-end=\"5165\" class=\"\"\u003e\u003cstrong data-start=\"5121\" data-end=\"5133\"\u003eDrawtube\u003c\/strong\u003e: Millimeter graduated, lockable\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"5166\" data-end=\"5215\" class=\"\"\u003e\n\u003cp data-start=\"5168\" data-end=\"5215\" class=\"\"\u003e\u003cstrong data-start=\"5168\" data-end=\"5182\"\u003eBack focus\u003c\/strong\u003e: Two 2\" extension tubes included\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"5216\" data-end=\"5280\" class=\"\"\u003e\n\u003cp data-start=\"5218\" data-end=\"5280\" class=\"\"\u003e\u003cstrong data-start=\"5218\" data-end=\"5236\"\u003eMounting rings\u003c\/strong\u003e: Dual split rings with Vixen-style dovetail\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"5281\" data-end=\"5337\" class=\"\"\u003e\n\u003cp data-start=\"5283\" data-end=\"5337\" class=\"\"\u003e\u003cstrong data-start=\"5283\" data-end=\"5297\"\u003eTop handle\u003c\/strong\u003e: Stabilizer bar doubles as carry handle\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"5338\" data-end=\"5371\" class=\"\"\u003e\n\u003cp data-start=\"5340\" data-end=\"5371\" class=\"\"\u003e\u003cstrong data-start=\"5340\" data-end=\"5360\"\u003eFinderscope base\u003c\/strong\u003e: Installed\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"5372\" data-end=\"5401\" class=\"\"\u003e\n\u003cp data-start=\"5374\" data-end=\"5401\" class=\"\"\u003e\u003cstrong data-start=\"5374\" data-end=\"5386\"\u003eDust cap\u003c\/strong\u003e: Slip-on metal\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"5402\" data-end=\"5429\" class=\"\"\u003e\n\u003cp data-start=\"5404\" data-end=\"5429\" class=\"\"\u003e\u003cstrong data-start=\"5404\" data-end=\"5418\"\u003eOTA weight\u003c\/strong\u003e: ~10.8 lbs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTech Details: \u003c\/h2\u003e\n\u003ctable id=\"product-attribute-specs-table\" class=\"table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eAperture\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e4\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBinary and Star Cluster Observation\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eVery Good\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Length\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e714mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFocal Ratio\u003c\/th\u003e\n\u003ctd class=\"data\"\u003ef\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGalaxy and Nebula Observation\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eFair\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHighest Useful Magnification\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e204x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eLunar Observation\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eGreat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e11 lbs.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePlanetary Observation\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eVery Good\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eResolution\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1.14 arc seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTelescope Type\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eRefractor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eVisual Limiting Magnitude\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e12.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1 year, extendable to lifetime\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003eSupplied Accessories: \u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eCradle Ring with Handle and Vixen Style Dovetail Plate; Explore Finder Scope Base installed on scope; 99% Reflective 2\" Diagonal\u003c\/span\u003e\u003c\/p\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":40481983299657,"sku":"ES102FCD","price":1699.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/fcd100_102mm_side_shot_burst_1493x_c876ac07-b3ab-4a09-8ca2-af54abed8aa7.jpg?v=1675379537"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/collections\/cf28923c-bf84-4742-9f1b-658286a1beba.png?v=1678525198","url":"https:\/\/astronomics.com\/collections\/explore-scientific.oembed?page=8","provider":"Astronomics","version":"1.0","type":"link"}