{"title":"Imaging Accessories","description":"","products":[{"product_id":"piggy-cam-for-televue-scopes-only","title":"TeleVue Piggy-Cam For TeleVue Scopes Only","description":"\u003cp\u003eThis machined aluminum piggyback bracket allows a 35mm camera to be installed on the mounting ring of any TeleVue refractor for wide-field deep space photography. The scope must be installed on a motorized equatorial mount and aligned on the north celestial pole for proper photographic operation. The U-shaped base of the Piggy-Cam fits into one of the dovetail grooves machined into TeleVue refractor mounting rings only. A supplied button head screw holds the Piggy-Cam securely in the mounting ring by threading through the hole visible in the U-shaped base of the Piggy-Cam and into a matching hole in the mounting ring's dovetail groove.\u003c\/p\u003e\n\u003cp\u003eThe camera platform has a standard 1\/4\"-20 thread bolt in a slot. A hand-tighten knob holds the camera in place. The slot for the 1\/4\"-20 thread bolt allows the camera to be positioned left or right of center to avoid interference with any finderscope that might be installed in the mounting ring's second dovetail slot. The camera can be pivoted from side to side to keep the telescope barrel out of the field of view of a wide-angle camera lens, but cannot tilt up and down. The camera platform can be rotated though a 90-degree arc to allow a vertical or horizontal picture composition (or any angle in between). Two hand-tighten knobs hold the camera platform at the desired angle.\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\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":40221635936329,"sku":"5970","price":78.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/files\/PGC_1001_PiggyCam_v1copy.jpg?v=1723746728"},{"product_id":"1-25-1-6x-extender-q-for-takahashi-refractors","title":"Takahashi 1.25\" 1.6X Extender-Q for Takahashi Refractors","description":"\u003cp\u003eThis dual purpose Takahashi optical system is both a 2\" 1.6x Barlow and a field flattening photographic tele-extender designed for use with Takahashi FSQ-106\/Sky 90 refractors.\u003c\/p\u003e\n\u003cp\u003eThe 1.25\" Extender-Q is a visual and photographic amplification device designed for use with older Takahashi FSQ-106N and Sky 90 refractors. It changes the FSQ-106N from a 530mm f\/5 to an 850mm f\/8 and provides a 44mm image circle with a 3° field. The Sky 90 changes from a 500mm f\/5.6 to an 800mm f\/9. However, tests have shown that the Extender-Q will give you similar 1.6x magnification and focal ratio results with every Takahashi refractor, and not just the fast focal ratio FSQ-106 and Sky 90.\u003c\/p\u003e\n\u003cp\u003eThe Extender-Q threads into the Takahashi focuser drawtube before the 1.25\" eyepiece adapter and so cannot be used with non-Takahashi scopes.\u003c\/p\u003e\n\u003cp\u003eThis extender is not a simple two-lens achromatic Barlow lens, but rather a sophisticated optical amplification device using five lenses in three groups that functions as both a visual Barlow and a photographic tele-extender. Its five-element optical system is fully multicoated for maximum light transmission and contrast. The Extender-Q produces a flat, color free, extremely high contrast image that can be used for high magnification lunar and planetary visual observation or photography and CCD imaging.\u003c\/p\u003e\n\u003cp\u003eAn additional advantage of the Extender-Q is that it corrects the image in the ultraviolet portion of the spectrum that is invisible to the eye, but is easily recorded by CCD cameras. Stars that radiate strongly in the ultraviolet appear closer to their naked-eye visual appearance when imaged on a CCD camera through the Extender-Q. They do not have a bloated appearance on photos due to their normally invisible UV component being recorded by the CCD camera and added to the visual image. This feature only adds to the photo\/visual capabilities of Takahashi scopes.\u003c\/p\u003e\n\u003cp\u003eThe Extender-Q threads into the focuser drawtube, in place of the 1.25\" eyepiece adapter (which is unthreaded from the focuser drawtube and reinstalled on the end of the Extender-Q). Several extension tubes in the Extender-Q body add the needed extra light path distance to allow eyepieces and a 1.25\" star diagonal to focus. An optional 2\" adapter #TEQ0002, shown below, threads into the end of the Extender-Q in place of the 1.25\" adapter to let you use a 2\" star diagonal and 2\" eyepieces with the Extender-Q.\u003c\/p\u003e\n\u003cp\u003eThe maximum length of the Extender-Q (5.5\") is only used for photography and straight-through visual observing. With a star diagonal, two of the extender tubes in the Extender-Q body are removed, shortening the Extender-Q length to 3\". Rubber grip rings on each section make it easy to assemble and disassemble the unit.\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\u003eLength\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e5.25\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of optical elements\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePower\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1.6x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e13 oz.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e5 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":40221636329545,"sku":"XTND-Q","price":640.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/3861_1.jpg?v=1662966778"},{"product_id":"0-8x-reducer-photographic-field-flattener-for-tv-85-pronto","title":"TeleVue 0.8X Reducer\/Photographic Field Flattener for TV-85\/Pronto","description":"\u003cp\u003eThis 0.8X reducer\/field flattener assembly converts the 600mm focal length f\/7 TeleVue TV-85 refractor into a 480mm f\/5.6 telephoto lens for faster astronomical and terrestrial photography. It also converts the 480mm f\/6.8 TeleVue Pronto into a 380mm f\/5.4 lens, and can be used for a similar purpose with any other manufacturer's 400mm to 600mm focal length refractor that has a 2\" focuser. In addition to reducing the focal length of the telescope and thereby increasing the photographic speed, the system flattens the normal field curvature inherent in all refractors to provide images that are sharply focused out to the very corners of the 35mm frame. Stars look sharp and point-like all the way across the field. You don't have to worry about photos that are sharp in the center and blurry at the edges.\u003c\/p\u003e\n\u003cp\u003eThe fully multi-coated 3-lens assembly inserts directly into a 2\" focuser and accepts a standard T-ring for connecting a 35mm camera. A review in \u003cem\u003eSky \u0026amp; Telescope \u003c\/em\u003esaid, \"This accessory is a must-have for someone planning to use the TV-85 photographically.\"\u003c\/p\u003e\n\u003ch2\u003eTech Details: \u003cbr\u003e\n\u003c\/h2\u003e\n\u003ctable class=\"table\" id=\"product-attribute-specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1 year\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":40221636919369,"sku":"1348","price":403.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/files\/TRF_2008_0.8xRFRef400_600_copy.jpg?v=1723659947"},{"product_id":"eyepiece-projection-adapter-needs-t-ring","title":"Takahashi Eyepiece Projection Adapter, Needs T-Ring","description":"\u003cp\u003eConsists of three parts for eyepiece projection photography with Takahashi refractors only. The normal 1.25\" Takahashi eyepiece holder is unscrewed from the telescope drawtube and replaced by a special compression ring 1.25\" eyepiece holder from the TCA-4. A 1.25\" eyepiece is inserted into the compression ring (0.965\" eyepieces can be used by adding optional 0.965\" adapter #TCA9AD) and locked in place by tightening the ring. The TCA-4 body slips over the eyepiece and is in turn locked into place on the compression ring by thumbscrews. An optional T-ring attaches to the telescoping inner tube of TCA-4. The inner tube can be moved in and out of the TCA-4 body to allow the projection distance to be varied from 100mm to 130mm. The projection distance is locked in by thumbscrews on the TCA-4 body. The orientation of the camera can be changed from horizontal to vertical by loosening the thumbscrews at the front of the TCA-4 body, rotating the body to the desired angle, and retightening the thumbscrews. The variable projection distance design allows you to change the magnification to vary the size of the image by 30% without the need to change to a different focal length eyepiece. Needs optional T-ring.\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\u003eProjection Distance\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e100mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e5 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":40221639409737,"sku":"TCA-4","price":352.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/4156_1.jpg?v=1662966871"},{"product_id":"0-8x-reducer-field-flattener-corrector-for-photography-for-mewlons","title":"Takahashi 0.8X Reducer\/Field Flattener\/Corrector for Photography for Mewlons","description":"\u003cp\u003eThis fully-multicoated visual\/photographic focal reducer for the Takahashi Mewlon Dall-Kirkham reflectors shortens each telescope's focal length and effective focal ratio by a factor of 0.8x.\u003c\/p\u003e\n\u003cp\u003eWith the reducer in place, the 8.3\" Mewlon 210 changes from a 2415mm focal length f\/11.5 system to a 1961mm focal length f\/9.3. This increases the image circle from 18mm at the focal plane at f\/11.5 to 39mm at f\/9.3 with the reducer in place. The field of view is 1.2° using the reducer.\u003c\/p\u003e\n\u003cp\u003eBy the same token, the 9.8\" Mewlon 250 changes from a 3000mm focal length f\/12 to a 2307mm f\/9.2 system. This increases the image circle from 21mm at the focal plane at f\/12 to 42mm at f\/9.2, with a 1° field of view.\u003c\/p\u003e\n\u003cp\u003eThe 11.8\" Mewlon 300 changes from a 3572mm focal length f\/11.9 to a 2739mm f\/9.1 system, with the image circle increasing from 25mm to 42mm. With the reducer, the field of view is 45 arc minutes in diameter.\u003c\/p\u003e\n\u003cp\u003eIn addition to reducing the Mewlon focal length and focal ratio, this reducer also acts as a field flattener and corrector to reduce the coma inherent in the Dall-Kirkham design as well as the curvature of field that put stars at the edge of the field subtly out of focus. Coma is reduced and stars remain focused to the edges of the field with the reducer in use, allowing large photographic blowups that stay sharp all across the print.\u003c\/p\u003e\n\u003cp\u003eThe reducer has a 2\" barrel that slips into the Mewlon focuser. A safety groove machined into the barrel helps keep the reducer and attached camera from falling should the focuser thumbscrew accidentally loosen during use. The camera side of the reducer has standard 42mm photographic T-threads for connection to your camera.\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\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e8 oz.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e5 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":40221645733961,"sku":"TMC1800","price":530.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/5372_1.jpg?v=1662967080"},{"product_id":"large-field-corrector-for-ccd-imaging-with-np-101is-np-127is","title":"TeleVue Large Field Corrector for CCD Imaging with NP-101is\/NP-127is","description":"\u003cp\u003eThis auxiliary multicoated lens system sharpens 35mm and large format CCD images taken through the TeleVue NP-101is and NP-127is imaging system refractors only. The lens flattens the normally slightly curved refractor field to provide tightly-focused pinpoint star images across the entire field for deep space photography. It does it without changing the effective focal length or focal ratio of the scope. It is recommended for cameras using large format CCD chips, such as the SBIG Research Series STL-11000M and 11000CM which have CCD chips the size of a 35mm negative, as well as those cameras with still larger chips (greater than the 36mm x 24.7mm chips of the STL-11000 models).\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\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e5 oz.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e5 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":40221652746313,"sku":"1360","price":343.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/12389_1.jpg?v=1662967327"},{"product_id":"f-6-3-focal-reducer-for-schmidt-cassegrains","title":"Antares f\/6.3 Focal Reducer for Schmidt-Cassegrains","description":"\u003cp\u003eThis focal reducer and field flattener consists of a four-element multicoated 40mm lens in a metal cell. It threads onto the rear cell of 5\" to 16\" Celestron and Meade Schmidt-Cassegrain telescopes, making it possible to have a dual focal ratio instrument without sacrificing image quality. The reducer\/corrector duplicates the rear cell thread of the telescope, allowing you to attach all standard rear cell visual and photographic accessories to the reducer. The reducer\/corrector converts the f\/10 focal ratio of Celestron C5, C8, C9¼, and C11 telescopes (and all Meade 8\" and larger f\/10 telescopes) to f\/6.3. The f\/11 C14 telescope becomes an f\/7. When used for astrophotography, it reduces exposure times by a factor of 3, with an actual field diameter of 1.5\" at the film plane.\u003c\/p\u003e\n\u003cp\u003eA rubber grip ring on the body allows for easy installation of the made-in-Canada reducer\/corrector on your scope, even when you are wearing gloves.\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\"\u003e4 0z.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1 year\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Antares","offers":[{"title":"Default Title","offer_id":40221652844617,"sku":"8310","price":99.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/12637_1.jpg?v=1662967332"},{"product_id":"0-5x-focal-reducer-for-celestron-meade-and-orion-ccd-imaging-cameras","title":"Antares 0.5X Focal Reducer for Celestron, Meade, and Orion CCD Imaging Cameras","description":"\u003cp\u003eThis Antares 1.25\" 0.5x focal reducer lens (tele-compressor) is used under the Orion brand name to thread into the nosepiece of Orion StarShoot Solar System cameras and StarShoot Deep Space Color Imaging Camera. It can also be used with any other small chip CCD camera having a 1.25\" nosepiece, such as the Celestron NexImage, Meade DSI, etc. It is an inexpensive way to more than double the field of view and halve the photographic magnification of such cameras.\u003c\/p\u003e\n\u003cp\u003eThis allows you to image more of the lunar surface in a single exposure for more dramatic views of our nearest solar system neighbor and gives you four times the sky area in your deep space Images. The reducer is not recommended for planetary imaging, as it will make the disc of the planet smaller, which is usually the reverse of what you are trying to accomplish when imaging a small and distant planet.\u003c\/p\u003e\n\u003cp\u003eThe Antares reducer will also work with any CCD camera using a 1.25\" nosepiece that is threaded for 1.25\" filters. It will work with both solar system (lunar\/planetary) imagers and deep space imagers. It effectively reduces the focal length of the telescope by half with all CCD cameras. This increases the area imaged by your camera by a factor of 4.\u003c\/p\u003e\n\u003cp\u003eThe larger imaging area allows you to capture larger star fields and deep-sky objects that may not normally fit entirely onto your deep space camera's imaging CCD. With the StarShoot II Solar System camera (and other lunar\/planetary imagers), it effectively changes the image size recorded by the camera from the equivalent of that seen through a 6mm eyepiece to that of a 12mm eyepiece. This permits wider field imaging of the Moon (as well as imaging the sun, if you use the proper solar filter over the objective of your scope).\u003c\/p\u003e\n\u003cp\u003eThe Antares reducer uses a two-element achromatic lens, with antireflection coatings on all air-to-glass lens surfaces for maximum light transmission. The lenses are set in an anodized aluminum cell that is threaded to accept 1.25\" filters. The Antares reducer requires 43mm of additional inward focus travel when used with the Orion StarShoot II Solar System Camera and 52mm of inward focus travel when used with the Orion StarShoot Deep Space Color Imaging Camera II.\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\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e2 oz.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1 year\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Antares","offers":[{"title":"Default Title","offer_id":40221654155337,"sku":"ORSSFR","price":24.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/13326_1.jpg?v=1662967391"},{"product_id":"f-6-3-reducer-corrector-for-schmidt-cassegrains","title":"Celestron F\/6.3 Reducer\/Corrector for Schmidt-Cassegrains","description":"\u003cp\u003eThis combination focal reducer and field flattener consists of a four-element multicoated 41mm lens in a metal cell. It threads onto the rear cell of 5\" to 16\" Celestron and Meade Schmidt-Cassegrain telescopes, making it possible to have a dual focal ratio instrument without sacrificing image quality. The reducer\/corrector duplicates the rear cell thread of the telescope, allowing you to attach all standard rear cell visual and photographic accessories. The reducer\/corrector converts the f\/10 focal ratio of Celestron C5, C8, C9¼, and C11 telescopes (and all Meade 8\" and larger f\/10 telescopes) to f\/6.3. The f\/11 C14 telescope becomes an f\/7. When used for astrophotography, it reduces exposure times by a factor of 3, with an actual field diameter of 1.5\" at the film plane.\u003c\/p\u003e\n\u003cp\u003eThe reducer\/corrector is supplied with full instructions and with plastic dust caps for both sides of the lens assembly. A rubber grip ring on the body allows for easy installation of the reducer on your scope, even when you are wearing gloves.\u003c\/p\u003e\n\u003ch2\u003eTech Details:\u003c\/h2\u003e\n\u003ctable class=\"table-open\" id=\"product-specs-list\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eLens Coating:\u003c\/td\u003e\n\u003ctd\u003eFully Multi-coated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial:\u003c\/td\u003e\n\u003ctd\u003eMachined aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible:\u003c\/td\u003e\n\u003ctd\u003eCelestron Schmidt-Cassegrain telescopes (C5, C6, C8, C9.25, C11, C14) | No EdgeHD tubes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions:\u003c\/td\u003e\n\u003ctd\u003e56mm (2.2\") in diameter, 34mm (1.34\") long\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight:\u003c\/td\u003e\n\u003ctd\u003e4.3 oz (121.90 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCalifornia Residents\u003c\/td\u003e\n\u003ctd class=\"cali-prop65-warning\"\u003e\u003ca href=\"https:\/\/www.celestron.com\/products\/reducer-corrector#\"\u003eView Proposition 65 Warning\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable class=\"table\" id=\"product-attribute-specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e2 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":40221656940617,"sku":"8325","price":199.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/3906_1.jpg?v=1662967471"},{"product_id":"2-1-6x-extender-qe-for-the-new-takahashi-fsq-106ed-fs-60c-refractors-only","title":"Takahashi 2\" 1.6X Extender-QE for the New Takahashi FSQ-106EDX4 Refractors Only","description":"\u003cp\u003eThe Takahashi Extender-QE is designed specifically for use with the new Takahashi FSQ-106EDX4 refractors only. It serves a dual purpose with that scope. It is both a 2\" 1.6x visual Barlow and a field-flattening photographic tele-extender. This extender is not a simple two-lens achromatic Barlow lens, but rather a refined five-element optical amplification device.\u003c\/p\u003e\n\u003cp\u003eThe 1.6x Barlow function is very useful with the fast focal ratio f\/5 FSQ-106EDX4 refractor, as it lets you use long focal length eyepieces without having their exit pupils exceed the maximum dilated size of your eye's pupil. It also provides a longer telescope focal length to let you achieve higher magnifications without having to resort to very short focal length\/short eye relief eyepieces.\u003c\/p\u003e\n\u003cp\u003eThe Extender-QE produces a flat, color free, extremely high contrast image that can be used for high magnification lunar and planetary visual observation or photography and CCD imaging. An additional advantage of the Extender-QE is that it corrects the image in the ultraviolet portion of the spectrum that is invisible to the eye, but is easily recorded by CCD cameras. Stars that radiate strongly in the ultraviolet appear closer to their naked-eye visual appearance when imaged on a CCD camera through the Extender-QE. They do not have a bloated appearance on photos due to their normally invisible UV component being recorded by the CCD camera and added to the visual image. This feature only adds to the photo\/visual capabilities of the Takahashi FSQ-106ED.\u003c\/p\u003e\n\u003cp\u003eIts five-element optical system is fully multicoated for maximum light transmission and contrast. There is a deep safety groove cut into the 2\" barrel on the telescope side of the Extender-NQ. This catches the \"New Q\" telescope's 2\" focuser thumbscrew and prevents the extender from slipping out of the focuser should that thumbscrew accidentally loosen while observing. Two chrome thumbscrews in the 2\" barrel on the eyepiece side of the extender hold eyepieces, star diagonals, and camera adapters firmly in place. Dust caps are provided for both ends of the XTND-QE to keep it dust-free when not in use.\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\u003eLength\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e3.75\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNumber of optical elements\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePower\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1.6x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e12 oz.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e5 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Takahashi","offers":[{"title":"Default Title","offer_id":40221660938313,"sku":"XTND-NQ","price":720.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/13967.jpg?v=1662967629"},{"product_id":"illuminated-multiple-reticle-finder","title":"Astro-Tech Illuminated Multiple Reticle Finder","description":"\u003cp\u003eThe Astro-Tech #ATF multiple reticle finder is a single-power illuminated multiple reticle red-dot finder for astronomy and daylight terrestrial use. The lightweight and compact Astro-Tech finder features a precision ground reflex lens viewing window with minimal parallax; four different reticle patterns; seven brightness levels; and a two-part mounting base for installing the finder on a variety of telescopes.\u003c\/p\u003e\n\u003cp\u003eAny of four different reticle patterns can be selected by a lever at the rear of the finder. They include a single dot, such as that found in most traditional red dot finders; a plain crosshair; a circle with four short bars that extend out from the edges of the circle; and a dot within a circle.. The reticle patterns are projected on a multicoated optical glass viewing window that's roughly the proportions and shape (but not the actual size!) of a 16 x 9 HDTV screen. When the sky is viewed through the window, the red reticle appears to be superimposed on the sky or daytime landscape. You can choose the reticle pattern that best suits your viewing style and personal preferences. The actual projected reticles can be seen in the feature image below. A rubber cover is supplied to slip over the glass screen to protect its premium coatings when the scope is not in use.\u003c\/p\u003e\n\u003cp\u003eThe Astro-Tech finder is CNC-machined from solid aluminum for strength and durability, rather than being molded of fragile plastic, as are most red-dot finders. The finder is anodized a non-reflective matte black. The finder's matte black dovetail base is also CNC-machined from aluminum stock.\u003c\/p\u003e\n\u003cp\u003eThe supplied Vixen style mounting stalk lets you use the Astro-Tech multiple reticle finder with many Vixen\/Celestron\/Orion-style refractors or reflectors  that will let you mount the finder directly into an Astro-Tech\/Vixen\/Celestron\/Orion-style finder mounting shoe.\u003c\/p\u003e\n\u003cp\u003eThe bottom of the mounting stalk has a V-shaped base that is 30mm wide at its widest point. This will let it fit into the finder mounting bracket provided with most of the refractor and reflector telescopes from the above manufacturers. It lets you replace the inexpensive plastic single red dot finders and small refractor-type finders with the more flexible illuminated multiple reticle patterns of the Astro-Tech #ATF finder.\u003c\/p\u003e\n\u003cp\u003eThe top of the mounting stalk has narrow V-shaped ridges that the #ATF finder body clamps onto in order to lock the finder in place.\u003c\/p\u003e\n\u003cp\u003eClick-stop azimuth and altitude hex head adjustment bolts allow you to line up the finder with your main scope optics. The adjustments are very accurate, with each click stop equal to 1 arc minute of position change. The appropriate hex head wrenches are supplied for both clamping the finder to its base and making the altitude and azimuth adjustments.\u003c\/p\u003e\n\u003cp\u003eThere is a combined on-off switch and rotary brightness level control on top of the finder. The control provides seven click-stop brightness levels, allowing you to match the finder brightness to all lighting conditions and targets, from lining up on the Moon to the locating faint naked eye stars without having the finder brightness overpower the faintest stars.\u003c\/p\u003e\n\u003cp\u003eThe finder uses one user-replaceable 3 volt CR2032 lithium camera battery (supplied). Battery charge and battery life are not covered by the finder warranty. Replacement batteries are readily available at Wal-Mart, Radio Shack, camera stores, etc.\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\"\u003e8 oz.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1 year\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Astro-Tech","offers":[{"title":"Default Title","offer_id":40221661233225,"sku":"ATF","price":69.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/files\/atfcrop.jpg?v=1756930249"},{"product_id":"0-8x-reducer-lens-body-for-tv-102-and-tv-102iis-refractors","title":"TeleVue 0.8X Reducer Lens Body for TV-102 and TV-102iis Refractors","description":"\u003cp\u003eThis TeleVue 0.8x magnification multicoated auxiliary lens system reduces by 20% the focal length of the TeleVue TV-102iis and the TV-102 and other TeleVue 2\" focuser refractors. The field of view and lens speed of the telescope accordingly increases by 25%. For example, with a TV-102, the focal length decreases from 880mm to 704mm and the focal ratio shortens from f\/8.6 to f\/6.9. The reducer works with film and CCD formats up to standard 35mm size.\u003c\/p\u003e\n\u003cp\u003eThe reducer is optimized for the 55mm back focal length typical of 35mm SLR and digital SLR cameras that accept T-rings. To attach an optional T-ring to the back of the reducer, you will need either optional adapter #13TRA to use a standard T-ring or optional adapter #13CAW to use a Canon T-ring (the #13CAW eliminates the inner portion of Canon T-rings to provide a larger diameter opening for reduced vignetting). Attaching the SBIG STL11000 Research Series CCD camera will require an optional #13STL adapter.\u003c\/p\u003e\n\u003cp\u003eThe #1362 is constructed to work with 2\" focuser drawtube telescopes (such as the TV-102) as well as the threaded imaging system accessories of the TV-102iis refractor.\u003c\/p\u003e\n\u003cp\u003eIn addition to this #1362, imaging will require one of three combinations of some of the following accessories (which combination is used depends on the type of camera - see the system charts in the feature images below): \u003cbr\u003ea \u003ca href=\"\/televue-0-25-inch-64mm-spacer-ring_p14559.aspx\"\u003e#13T025 0.25\" spacer\u003c\/a\u003e, \u003cbr\u003ea \u003ca href=\"\/televue-0-50-inch-127mm-spacer-ring_p14561.aspx\"\u003e#13T050 0.5\" spacer\u003c\/a\u003e, \u003cbr\u003ea \u003ca href=\"\/televue-1-inch-254mm-spacer-ring_p14562.aspx\"\u003e#13T100 1.0\" spacer\u003c\/a\u003e, \u003cbr\u003ea \u003ca href=\"\/televue-canon-wide-mount-t-adapter_p12451.aspx\"\u003e#13CAW Canon wide T-adapter\u003c\/a\u003e, and Canon T-ring,\u003cbr\u003ea \u003ca href=\"\/televue-standard-t-ring-camera-adapter_p14558.aspx\"\u003e#13TRA standard T-ring adapter\u003c\/a\u003e, and an appropriate T-ring,\u003cbr\u003ea \u003ca href=\"\/televue-sbig-stl-11000-ccd-camera-adapter_p14557.aspx\"\u003e#13STL SBIG STL11000 camera adapter\u003c\/a\u003e, \u003cbr\u003eplus the imaging system adapter supplied with the TeleVue telescope. \u003cbr\u003eWhen using non-IS scopes (such as the TV-102) that have a 2\" focuser drawtube, an optional \u003ca href=\"\/televue-adapter-0-8x-reducer-2-inch-focuser_p14571.aspx\"\u003e#1363 adapter\u003c\/a\u003e is required in place of the imaging system adapter that is supplied with the TV-102iis and labeled part A in the system charts.\u003c\/p\u003e\n\u003cp\u003eThe system chart feature images below show the required order in which the #1362 and the other optional accessories should be assembled for proper operation.\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\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e8 oz.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e5 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":40221661790281,"sku":"1362","price":446.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/14567.jpg?v=1662967659"},{"product_id":"adapter-to-use-0-8x-reducer-in-2-focuser-tv-102-np-101-or-np-127","title":"TeleVue Adapter to Use 0.8x Reducer in 2\" Focuser TV-102, NP-101, or NP-127","description":"\u003cp\u003eThis TeleVue 2\" focuser adapter lets you use the #1361 0.8x reducer with the 2\" focusers of TeleVue NP-101 and NP-127 refractors. It also lets you use the #1362 0.8x reducer with the 2\" focuser of the TV-102 refractor. The adapter lets you do prime focus astrophotography with these reducers using 35mm film cameras, 35mm format digital SLRs, and SBIG STL11000 Research Series CCD cameras.\u003c\/p\u003e\n\u003cp\u003eIn addition to this #1363, imaging will require one of three combinations of some of the following accessories (which combination is used depends on the type of camera - see the system chart feature image below): \u003cbr\u003ea \u003ca href=\"\/televue-0-8x-reducer-lens-body-for-televue-nagler-petzval-np-refractors_p13328.aspx\"\u003e#1361 0.8x reducer\u003c\/a\u003e or \u003ca href=\"\/televue-0-8x-reducer-lens-body-for-tv-102-and-tv-102iis-refractors_p14567.aspx\"\u003e#1362 0.8x reducer\u003c\/a\u003e, \u003cbr\u003ea \u003ca href=\"\/televue-3-8-inch-96-5mm-extension-tube_p14570.aspx\"\u003e#1364 3.8\" extension tube\u003c\/a\u003e, \u003cbr\u003ea \u003ca href=\"\/televue-0-25-inch-64mm-spacer-ring_p14559.aspx\"\u003e#13T025 0.25\" spacer\u003c\/a\u003e, \u003cbr\u003ea \u003ca href=\"\/televue-0-50-inch-127mm-spacer-ring_p14561.aspx\"\u003e#13T050 0.5\" spacer\u003c\/a\u003e, \u003cbr\u003ea \u003ca href=\"\/televue-1-inch-254mm-spacer-ring_p14562.aspx\"\u003e#13T100 1.0\" spacer\u003c\/a\u003e, \u003cbr\u003ea \u003ca href=\"\/televue-canon-wide-mount-t-adapter_p12451.aspx\"\u003e#13CAW Canon wide T-adapter\u003c\/a\u003e, and Canon T-ring,\u003cbr\u003ea \u003ca href=\"\/televue-standard-t-ring-camera-adapter_p14558.aspx\"\u003e#13TRA standard T-ring adapter\u003c\/a\u003e, and an appropriate T-ring, and\u003cbr\u003ea \u003ca href=\"\/televue-sbig-stl-11000-ccd-camera-adapter_p14557.aspx\"\u003e#13STL SBIG STL11000 camera adapter\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eThe system charts in the feature images below show the required order in which the #1363 and the other optional accessories should be assembled for proper operation. The #1363 adapter is used in place of the imaging system adapter, labeled part A in the system charts below, that is supplied with IS-system scopes.\u003c\/p\u003e\n\u003cp\u003eThe adapter is made of black anodized aluminum with internal anti-reflection threads for maximum contrast. A safety cut in the adapter's 2\" barrel engages the thumbscrew or compression ring of the telescope focuser to hold the adapter safely in the focuser should the thumbscrew or compression ring loosen during use.\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\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e5 oz.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e5 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":40221661823049,"sku":"1363","price":69.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/14571.jpg?v=1662967660"},{"product_id":"celestron-piggyback-for-celestron-sct-telescopes-only","title":"Celestron Piggyback for Celestron SCT Telescopes Only 93609","description":"\u003cp\u003eThis Celestron piggyback mount is a handy accessory for all observers interested in wide-field deep-sky astrophotography. This lightweight mount allows you to attach your 35mm, DSLR, or point and shoot digital camera, with its normal lens attached, to the rear cell of all Celestron SCT telescopes. You can then take moderately long exposure wide-field constellation photos while your scope tracks across the sky to follow the motion of the stars.\u003c\/p\u003e\n\u003cp\u003eMounting holes in the base of the piggyback allow it to be installed in pre-drilled threaded holes in the rear cell of any of the above scopes, using the supplied mounting hardware. Because of the larger radius of curvature of the 9.25\" to 14\" optical tubes, there will be a slight gap between the rear cell and the center of the underside of the piggyback. This does not affect performance and is of no consequence if the piggyback mounting screws are threaded firmly in place.\u003c\/p\u003e\n\u003cp\u003eThe camera platform of the piggyback has a standard 1\/4\"-20 thread bolt with a hand-tighten knob in the platform to hold your camera in place. The camera can be pivoted from side to side to keep the telescope barrel out of the field of view of a wide-angle camera lens, but cannot tilt up and down.\u003c\/p\u003e\n\u003cp\u003eThe piggyback can be left in place permanently. If the piggyback is removed, however, the short screws that sealed the rear cell (that were saved when the piggyback was installed) should be used to reseal the mounting holes on the rear cell. \u003cem\u003eDo not use the mounting screws that came with the piggyback to reseal the rear cell holes! \u003c\/em\u003eThese screws are long enough to potentially obstruct the movement of the telescope's primary mirror and possibly chip it. Damage caused by using incorrect length screws to reseal the rear cell holes is not covered by warranty.\u003c\/p\u003e\n\u003cp\u003eExposure times with a digital camera will be limited by the build-up of thermal noise within the camera's electronics, so some experimentation will be needed to see how long an exposure you can take before the image begins to get noisy and show excessive grain. The amount of light pollution in your area may also limit your exposure times.\u003c\/p\u003e\n\u003cp\u003eGenerally, with the normal lens on a camera, and the scope tracking in an altazimuth mode, exposure times will be limited to a maximum of five minutes or so for good full-frame images. After that, assuming your digital camera image has not become excessively noisy, the stars at the corners of the image will start to turn into short curved streaks because of the field rotation inherent in an altazimuth mount.\u003c\/p\u003e\n\u003cp\u003eThe field rotation and star trails can be eliminated with the NexStar 5SE by using the equatorial wedge built into the scope's tripod to convert the scope to equatorial tracking. The NexStar 6SE and 8SE and all other Celestron SCTs require the addition of optional equatorial wedge to be used in an equatorial tracking mode. In all cases, noise build-up in a digital camera would still limit your exposure times.\u003c\/p\u003e\n\u003cp\u003eThe unique design of the piggyback also allows you to fit a Celestron Star Pointer red dot finder on top of the piggyback as shown in the feature image below. This lets you accurately navigate your telescope and conduct astrophotography at the same time.\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\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":40221664739401,"sku":"5905","price":43.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/files\/93609-Piggyback_Mount_570x380_2x_2a0456ea-bf30-4ec2-a264-b8dae668a7fb.webp?v=1721844956"},{"product_id":"astro-tech-2-field-flattener-for-imaging-with-astro-tech-and-tmb-refractors","title":"Astro-Tech 2\" Field Flattener for Imaging with Astro-Tech and TMB Refractors","description":"\u003cp\u003eNew for August 2021, thread on adatper tops to choose between 42mm T-threads and 48mm T-threads.\u003c\/p\u003e\n\u003cp\u003eNamed a \u003cem\u003e\u003cspan style=\"font-family: verdana; color: #990000;\"\u003eSky \u0026amp; Telescope Hot Product of the Year for 2010\u003c\/span\u003e, \u003c\/em\u003ethe Astro-Tech photographic field flattener reduces the normal field curvature inherent in all refractors to provide you with images that are sharply focused out to the very corners of your DSLR or large format CCD imager frame. Stars on your images look sharp and point-like all the way across the field. You don't have to worry about photos that are sharp in the center but out of focus at the edges. The field flattener also works surprisingly well with the 6\", 8\", and 10\" Astro-Tech Ritchey-Chrétien astrographic reflectors.\u003c\/p\u003e\n\u003cp\u003eAs \u003cem\u003eSky \u0026amp; Telescope \u003c\/em\u003epointed out in their Hot Product citation, \"With only a few noteworthy (and expensive) exceptions, refractors need optional field flatteners in order to deliver acceptable star images across the field of today's DSLR cameras. Custom-designed flatteners usually cost hundreds of dollars, but the Astro-Tech 2\" Field Flattener is only $139. Furthermore, it's designed for any refractor with a focal ratio between f\/6 and f\/8. And there are reports that helps flatten the field of Astro-Tech Ritchey-Chrétien astrographs. The flattener was reviewed in the September 2009 issue of \u003cem\u003eSky \u0026amp; Telescope, \u003c\/em\u003epage 38.\"\u003c\/p\u003e\n\u003cp\u003eDesigned to work purely as a field flattener for imaging, and not simultaneously as a focal reducer or telecompressor, the 2\" Astro-Tech field flattener does not change the focal length or focal ratio of your telescope. It is not designed for visual use, having photographic T-threads only and no provision for using a star diagonal or eyepieces.\u003c\/p\u003e\n\u003cp\u003eA separate review in \u003cem\u003eSky \u0026amp; Telescope \u003c\/em\u003emagazine of the Astro-Tech field flattener and the Astro-Tech AT106 refractor said the field flattener was \"extremely easy to use with any SLR camera. You simply screw on the appropriate T-ring, connect your camera, and slip the flattener into the AT106's 2-inch focuser. Daylight shots made two things immediately apparent - the field flattener does not change the telescope's focal length (it's a true zero-power flattener), and it sharpens images at the edge of the field . . . At night, star images in the corners of my Nikon D300's APS-format frame, while vastly better than those recorded without the flattener, still showed a slight elongation . . . By focusing at a point slightly off center, thus balancing the imaging performance between the center and edge of the field, I could fill the frame with nice, round star images. For photographers shooting day or night, the flattener is well worth its current $150 price.\"\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" style=\"float: right; margin-left: 15px; margin-right: 15px; border-width: 1px; border-style: solid;\"\u003e\u003c\/p\u003e\n\u003cp\u003eWhile not specifically designed to work with Ritchey-Chrétien astrographs, images taken with the field flattener by Astro-Tech R-C owners have shown that the Astro-Tech 2\" field flattener works remarkably well with these advanced coma-free reflectors as well as with refractors. Comments like \"Works great on my AT8RC. Won't image without it,\" and \"Works well with my AT6RC,\" show up regularly in on-line imaging forums. An optical analysis and ray tracing of the field flattener was done in ZEMAX and applied to the R-Cs by Roger Ceragioli, the noted optical designer who did the final optimization of the design of the Astro-Tech Ritchey-Chrétiens. Here is what he had to say about the #AT2FF, \"My conclusion, which seems supported by what users are saying, is that you don't need any other field flattener. This one performs well over a 40mm image circle in all three small RCs (6\", 8\", and 10\").\"\u003c\/p\u003e\n\u003cp\u003eThe 2\" barrel of the fully multicoated dual-element Astro-Tech field flattener inserts directly into your scope's 2\" focuser drawtube. A groove machined into the field flattener barrel engages the thumbscrew or compression ring of your focuser to act as a safety stop. This prevents the field flattener and camera from falling to the ground should the thumbscrew or compression ring accidentally loosen during use.\u003c\/p\u003e\n\u003cp\u003eThe AT2FF now comes with threaded adapter tops for 42mm x 0.75mm pitch , or 48mm x 0.75mm pitch, T-2 photographic T-threads on the observer\/camera side of the black anodized field flattener accept a standard T-ring for connecting a 35mm or DSLR camera to the field flattener. They also allow direct connection to many CCD camera\/color filter wheel combinations.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpacing from field flattener to film plane: \u003c\/strong\u003eOptimal spacing from the shoulder of the field flattener (where a T-ring threads on) to a camera's imaging sensor or film plane is 57mm +\/- 4mm. The following DSLR camera body\/T-ring combinations typically all fall within this optimum spacing range and generally should require no additional spacers.\u003c\/p\u003e\n\u003cp\u003eA Canon EOS DSLR\/T-ring combination typically has a T-ring front flange to camera sensor spacing of approximately 55.5mm, although this number is dependent on the thickness of the T-ring you use and cannot be guaranteed. (Without T-ring, the distance from the front flange of the camera body to the sensor is approximately 44mm by itself.)\u003c\/p\u003e\n\u003cp\u003eA Minolta\/Sony DSLR and T-ring combo typically has an approximately 54mm T-ring front flange to sensor spacing. The exact number is again dependent on the thickness of your T-ring. (The camera front flange to sensor distance by itself is approximately 43.5mm.)\u003c\/p\u003e\n\u003cp\u003eA Nikon DSLR and T-ring combo typically has a total spacing of approximately 56mm. This number is again dependent on the T-ring thickness. (The camera front flange to sensor spacing is typically 46.5mm by itself.)\u003c\/p\u003e\n\u003cp\u003eWith CCD and DSI-type cameras, some experimentation with spacers will be necessary to achieve optimum performance, as these typically have much shorter camera front plate to sensor spacing than DSLR cameras.\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\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e8 oz.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1 year\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Astro-Tech","offers":[{"title":"Default Title","offer_id":40221666836553,"sku":"AT2FF","price":149.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/img_2026.jpg?v=1662967803"},{"product_id":"astro-tech-24mm-illuminated-reticle-eyepiece","title":"Astro-Tech 24mm Illuminated Reticle Eyepiece","description":"\u003cp\u003eThe economical Astro-Tech #AT24IL illuminated reticle 1.25\" eyepiece helps you align your go-to telescope on the sky, check your polar alignment for astrophotography, center guide stars in an photoguide scope, and more . . .\u003c\/p\u003e\n\u003cp\u003eThis Astro-Tech #AT24IL illuminated reticle 1.25\" eyepiece is the perfect eyepiece for aligning go-to telescopes on the sky each night when you go out to observe. It is also ideal for checking your scope's polar alignment for long exposure astrophotography, for centering guide stars in an off-axis photoguide scope for astrophotography, or for testing the accuracy of your computer pointing or the periodic error of your tracking system. Priced as much as 40% less than competitive illuminated reticle eyepieces, the #AT24IL is yet another example of the Astro-Tech philosophy of \"more performance for less money.\"\u003c\/p\u003e\n\u003cp\u003eMost conventional illuminated reticle eyepieces have a short focal length and limited eye relief, which can make for uncomfortable viewing, particularly if you wear eyeglasses. In comparison, the Astro-Tech #AT24IL has a long 24mm focal length for a wider field that makes it easier to locate guide stars. This virtually eliminates the need to swap out a high-power illuminated reticle with a lower power eyepiece to locate or center objects.\u003c\/p\u003e\n\u003cp\u003eIts very long 20mm eye relief and soft roll-down rubber eyecup make it very comfortable to use, whether you wear glasses to observe or not. You can use this Astro-Tech 1.25\" eyepiece with any make or model of telescope or off-axis guidescope.\u003c\/p\u003e\n\u003cp\u003eThe eyepiece reticle has a single etched crosshair precisely centered in eyepiece field of view for accurate results. A ribbed ring at the top of the eyepiece rotates to focus the crosshairs sharply to match your eyesight. The five-element optical system is fully multi-coated on all air-to-glass surfaces with high transmission anti-reflection coatings for bright, crisp views. The edges of the lenses are blackened for high contrast. The barrel is threaded for standard 1.25\" filters.\u003c\/p\u003e\n\u003cp\u003eThe metal-body cordless red LED (light emitting diode) crosshair illuminator has a rotary on\/off switch with an integral brightness level control. Two supplied 1.5V watch\/camera\/calculator button batteries will power the illuminator for many hours of use. The supplied batteries are model GPA76, but you can also use the Duracell, Maxell, National, Panasonic, Sony, or Toshiba LR44; the Eveready or Philips A76; etc. When replacing batteries, be sure the battery - signs face the LED portion of the illuminator and the + signs face the on\/off switch.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePlease note: \u003c\/strong\u003eWhile the manufacturer normally supplies batteries at no cost with this product as a convenience, the battery charge or useful life is not guaranteed. The batteries may arrive with their charge depleted or very low. In such a case, you will have to purchase replacement batteries locally, as battery life is not covered by the manufacturer's 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\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\"\u003e50\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\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e4 oz.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1 year\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Astro-Tech","offers":[{"title":"Default Title","offer_id":40221669294153,"sku":"AT24IL","price":69.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/18407.jpg?v=1662967878"},{"product_id":"tele-vue-paracorr-type-2-photo-visual","title":"TeleVue Paracorr Type 2 Photo\/Visual","description":"\u003cp\u003eBecause the original 1989 TeleVue Paracorr (\u003cem\u003ePara\u003c\/em\u003ebola \u003cem\u003eCorr\u003c\/em\u003eector) eliminated the coma inherent in fast parabolic mirrors, it made reflectors with \"fast\" f\/4.5-class focal ratios and longer as aberration-free as \"slow\" f\/12 scopes. However, with more compact \"no ladder\" Dobsonians with focal ratios in the f\/3 range becoming ever more popular, it became apparent that something even better than the original Paracorr was needed to keep up with the dropping focal ratios. Just as the original Paracorr was optimized for f\/4.5 mirrors, a new Paracorr was needed that was optimized for f\/3.\u003c\/p\u003e\n\u003cp\u003eThe new TeleVue Paracorr Type 2 \u003cem\u003eis \u003c\/em\u003ethat new Paracorr. Developed in 2010 after extensive design work and testing, the TeleVue Paracorr Type 2 can make an f\/3 mirror act like an f\/12 without a Paracorr. With essentially diffraction-limited images across the entire field, the Paracorr Type 2 makes the new breed of f\/3-class \"ladder-less\" Dobs possible, particularly with very wide field eyepieces, and superior in terms of convenience, field-of-view, and optical perfection when using top-quality mirrors.\u003c\/p\u003e\n\u003cp\u003eThe Paracorr Type 2 coma corrector fits into the 2\" focusers of all Newtonian reflectors and Dobsonians. It holds 2\" eyepieces directly and has an adapter for 1.25\" eyepieces. The Paracorr is ideal for premium wide field eyepieces like the 100° to 110° field TeleVue Ethos and 82° field Naglers, but all quality eyepieces will benefit. It has a \"tunable top\" that allows you to optimize the Paracorr's coma correction by precisely setting the distance from the eyepiece focus point (the field stop location) to the last surface of the Paracorr lens (within a small +\/- tolerance, of course).\u003c\/p\u003e\n\u003cp\u003eThe typical wide field eyepieces used with fast Newtonians can have field stop locations differing by as much as half an inch. The \"tunable top\" permits optimizing this critical spacing for all TeleVue eyepieces, and many others, by simply loosening a hand-tighten knob in the side of the Paracorr Type 2 and rotating the tunable top. This raises and lowers the eyepiece in relation to the Paracorr optics, allowing you to set the proper eyepiece field stop to Paracorr lens distance.\u003c\/p\u003e\n\u003cp\u003eAs can be seen in the image above, the tunable top adjustment slot in the Paracorr barrel is marked at eight specific intervals to match the spacing requirements of various TeleVue eyepieces so you can quickly dial in the proper spacing as you change between eyepieces. A chart with the correct spacing marks for the various TeleVue eyepieces (even the 31mm Nagler and 21mm Ethos is provided with the Paracorr Type 2 to eliminate guesswork. For your reference, \u003ca href=\"http:\/\/www.televue.com\/engine\/TV3_page.asp?id=155\u0026amp;plain=TRUE\u0026amp;preview=TRUE\"\u003eTeleVue's recommendation guide\u003c\/a\u003e for choosing the best tunable top height setting for various TeleVue eyepieces to get optimum coma correction with the Paracorr Type 2.\u003c\/p\u003e\n\u003cp\u003eThe design of the Paracorr Type 2 allows you to separate the optical assembly from the tunable top and use it with TeleVue imaging system components for imaging with 35mm, DSLR, and CCD cameras. APS-C size format cameras with an approximately 27mm sensor diagonal measurement are recommended to minimize field vignetting. The TeleVue Paracorr Type 2 increases the magnification by 1.15x.\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\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e17.5 oz.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e5 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"TeleVue","offers":[{"title":"Default Title","offer_id":40221670735945,"sku":"PARA2","price":577.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/18793.jpg?v=1662967923"},{"product_id":"celestron-0-7x-focal-reducer-for-celestron-11-edgehd-scopes-and-optical-tubes","title":"Celestron 0.7X Focal Reducer For Celestron 11\" EdgeHD Scopes And Optical Tubes","description":"\u003cp\u003eThis Celestron EdgeHD 0.7x focal reducer turns your 11\" f\/10 EdgeHD telescope into a full f-stop faster f\/7 scope, increasing your photographic field of view by 43% and cutting your deep space exposure times in half.\u003c\/p\u003e\n\u003cp\u003eThis Celestron EdgeHD 0.7x focal reducer is a 5-element lens system that converts your 11\" f\/10 EdgeHD scope or optical tube into a fast f\/7 optical system. It threads directly onto the 3.25\" rear cell threads of all 11\" EdgeHD optical tubes, in front of your imaging equipment. It increases your photographic field of view by 43% to better capture wide field images and cuts your deep space exposure times in half, all the while maintaining the flat-field performance of the native Edge HD optical design.\u003c\/p\u003e\n\u003cp\u003eThis Celestron EdgeHD reducer has high index optical elements, including exotic extra low dispersion rare-earth Lanthanum elements, to provide high contrast viewing while minimizing chromatic aberration. All air to glass lens surfaces are fully multicoated for maximum light transmission and color correction. Lens edges are blackened to minimize internal reflection and maximize image contrast. Large diameter lens elements, up to 60 mm clear aperture, ensure that the optimized image circle remains at a generous 42mm for use with large CCD sensors.\u003c\/p\u003e\n\u003cp\u003eThe system maintains the same back focus at its faster f\/7 focal ratio (nominally 146mm from the rear flange of the reducer to the image plane within your camera) as it has when your 11\" scope is used at f\/10. This generous back focus accommodates a wide variety of cameras and imaging accessories.\u003c\/p\u003e\n\u003cp\u003eThreading the CNC machined aluminum housing reducer directly onto the rear cell reduces mechanical vignetting and allows for use with larger (full frame) sensors and off-axis guiders. The CNC machined aluminum housing assures precise spacing and alignment of the optical elements. Threaded metal covers on both sides of the lens assembly protect your investment from dust and scratches. The housing duplicates the rear cell threading of the scope body so you can use of your existing EdgeHD T-adapters with or without the reducer in place.\u003c\/p\u003e\n\u003ch2\u003eTech Details:\u003c\/h2\u003e\n\u003ctable class=\"table\" id=\"product-attribute-specs-table\" style=\"max-width: 500px;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 25%;\"\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e49.6 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 25%;\"\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e2 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":40481972715593,"sku":"8311HD","price":849.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/19924.jpg?v=1675378878"},{"product_id":"celestron-0-7x-focal-reducer-for-celestron-14-edgehd-scopes-and-optical-tubes","title":"Celestron 0.7X Focal Reducer For Celestron 14\" EdgeHD Scopes And Optical Tubes","description":"\u003cp\u003eThis Celestron EdgeHD 0.7x focal reducer makes your 14\" f\/11 EdgeHD telescope into a full f-stop faster f\/7.7, increasing your photographic field of view by 43% and cutting your deep space exposure times in half .\u003c\/p\u003e\n\u003cp\u003eThis Celestron EdgeHD 0.7x focal reducer is a 5-element lens system that converts your 14\" f\/11 Celestron EdgeHD scope or optical tube into a fast f\/7.7 optical system. It threads directly onto the 3.25\" rear cell threads of all 14\" EdgeHD optical tubes, in front of your imaging equipment. It increases your photographic field of view by 43% to better capture wide field images and cuts your deep space exposure times in half, all the while maintaining the flat-field performance of the native Edge HD optical design.\u003c\/p\u003e\n\u003cp\u003eThis Celestron EdgeHD reducer has high index optical elements, including exotic extra low dispersion rare-earth Lanthanum elements, to provide high contrast viewing while minimizing chromatic aberration. All air to glass lens surfaces are fully multicoated for maximum light transmission and color correction. Lens edges are blackened to minimize internal reflection and maximize image contrast. Large diameter lens elements, up to 60 mm clear aperture, ensure that the optimized image circle remains at a generous 42mm for use with large CCD sensors.\u003c\/p\u003e\n\u003cp\u003eThe system maintains the same back focus at its faster f\/7.7 focal ratio (nominally 146mm from the rear flange of the reducer to the image plane within your camera) as it has when your 14\" scope is used at f\/11. This generous back focus accommodates a wide variety of cameras and imaging accessories.\u003c\/p\u003e\n\u003cp\u003eThreading the CNC machined aluminum housing reducer directly onto the rear cell reduces mechanical vignetting and allows for use with larger (full frame) sensors and off-axis guiders. The CNC machined aluminum housing assures precise spacing and alignment of the optical elements. Threaded metal covers on both sides of the lens assembly protect your investment from dust and scratches. The housing duplicates the rear cell threading of the scope body so you can use of your existing EdgeHD T-adapters with or without the reducer in place.\u003c\/p\u003e\n\u003ch2\u003eTech Details:\u003c\/h2\u003e\n\u003ctable class=\"table\" id=\"product-attribute-specs-table\" style=\"max-width: 500px;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 25%;\"\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e49.6 oz.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 25%;\"\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e2 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":40481972748361,"sku":"8314HD","price":849.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/19925.jpg?v=1675378880"},{"product_id":"astro-tech-0-8x-reducer-field-flattener-for-f-6-refractors","title":"Astro-Tech 0.8X Reducer\/Field Flattener For f\/6 Refractors","description":"This economical Astro-Tech 2\" 0.8x reducer\/field flattener is designed for astrophotography with f\/6 focal ratio refractors, but will also work well with refractors in the f\/5.5 to f\/7 range . . . \u003cbr\u003e\n\u003cp\u003eNew for August 2021, thread on adapter tops to choose between 42mm T-threads and 48mm T-threads.\u003c\/p\u003e\n\u003cp\u003eWhile this Astro-Tech #ATR8 0.8X reducer\/field flattener is designed for prime focus astrophotography with quality f\/6 focal ratio apo refractors such as the Astro-Tech AT72ED and AT130 apo, it will also work well with Astro-Tech and other brand refractors in the f\/5.5 to f\/7 range that use a 2\" focuser.\u003cbr\u003e\u003cbr\u003eFor example, the fully-multicoated Astro-Tech ATR8 converts the 430mm focal length f\/6 Astro-Tech AT72ED refractor into a 344mm f\/4.8 lens for faster and wider field astronomical and terrestrial photography, while the 777mm f\/7 Astro-Tech AT111EDT converts into a 622mm f\/5.6. \u003cbr\u003e\u003cbr\u003eIn addition to reducing the focal length of the telescope and thereby increasing the photographic speed, the ATR8 flattens the normal field curvature inherent in all refractors to provide images that are sharply focused out to the very corners of a large format DSLR chip. Stars look sharp and point-like all the way across the field in your images. You don't have to worry about photos that are sharp in the center and blurry at the edges.\u003cbr\u003e\u003cbr\u003eThe Astro-Tech ATR8 reducer\/flattener fits 2\" focusers. The 2\" telescope-side barrel is threaded for standard 2\" filters and has a beveled safety groove. The camera side of the reducer has an adapter choice beteen 42mm T-threads, or 48mm T-threads, to connect to a T-ring and camera body. A thread-on metal cover protects the T-threads when the reducer is not in use, while a slip-on dust cover is provided for the 2\" scope-side barrel. Back focus is 55mm from the shoulder of the reducer to the image plane, the standard spacing for 35mm and DSLR camera bodies. The image circle at the focal plane is 42mm in diameter. \u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003eTech Details:\u003c\/h2\u003e\n\u003ctable style=\"max-width: 500px;\" id=\"product-attribute-specs-table\" class=\"table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 25%;\"\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e5.6 oz.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 25%;\"\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1 year\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Astro-Tech","offers":[{"title":"Default Title","offer_id":40481973370953,"sku":"ATR8","price":149.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/20002.jpg?v=1675378924"},{"product_id":"losmandy-3-axis-piggyback-for-both-losmandy-and-vixen-style-dovetails","title":"Losmandy 3-Axis Piggyback For Both Losmandy- And Vixen-Style Dovetails","description":"\u003cp\u003eThis Losmandy three-axis piggyback system mounts on any Losmandy D-plate or Vixen-style accessory dovetail and allows you to rotate your camera 360° on the piggyback, tilt it up and down by 45°, and rotate the piggyback itself to line up the best shot.\u003c\/p\u003e\n\u003cdiv\u003eThis Losmandy DVCM2 piggyback system is precision-machined of aluminum and anodized black for long life. It can be used to support a 35mm or DSLR camera and lens for taking a long exposure photo. While the factory description of the DVCM2 claims that it offers three-axis camera orientation, this is not strictly accurate if you consider the three axes to be the normal roll, pitch, and yaw.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThe Losmandy DVCM2 has a 360° camera rotation (yaw) and a +\/- 45° camera tilt (pitch), but does not have a true roll capability (to quickly swing the camera 90° from a landscape to a portrait orientation, for example). What the DVCM2 has instead (in addition to the 360° rotation and tilt) is a complete piggyback unit rotation. \u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eWith a simple two-axis adapter, rotating the camera to aim at a subject away from the scope's optical axis and tilting it up or down to frame the object will cause the camera image to rotate in relation to the horizon (producing the unintended optical equivalent of roll). This may not correctly frame the object you're trying to photograph. The Losmandy DVCM2's ability to rotate both the piggyback assembly and the camera on the piggyback, as well as tilt the camera, allows you to cancel out much of the optical roll. The procedure is easier done than described. It is not a perfect solution to the lack of a true roll ability, but it allows the camera platform to be supported on two sides by 3\/8\" thick aluminum. These assure that even the heaviest camera\/lens load will be held firmly, with no image-blurring flexure during the exposure.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThe base of the Losmandy DVCM2 has dual slots that fit both the wider Losmandy \"D-plate\" accessory dovetail plates and narrower Vixen-style dovetail rails. A quick release knob lets you position the DVCM2 at any point along the length of the dovetail for balancing purposes and lock it securely in place, with no tools needed. Two knobs lock in the up\/down tilt of the camera support for extra security when using a camera with a long telephoto lens. The Losmandy DVCM2 weighs 2.7 lbs. When installed on a Losmandy-style dovetail plate the height from the top of the dovetail plate to the top of the camera mount is 3.95\" when the camera mount is parallel to the surface of the telescope optical tube. When similarly installed on a Vixen-style dovetail the height from the top of the dovetail plate to the top of the camera mount is 3.65\". \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\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e2.7 lbs.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1 year\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"Losmandy","offers":[{"title":"Default Title","offer_id":40481974714441,"sku":"DVCM2","price":150.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/20095.jpg?v=1675378995"},{"product_id":"losmandy-1-axis-piggyback-for-both-losmandy-and-vixen-style-dovetails","title":"Losmandy 1-Axis Piggyback For Both Losmandy- And Vixen-Style Dovetails","description":"This Losmandy one-axis piggyback system mounts on any Losmandy D-plate or Vixen-style accessory dovetail and allows you to rotate your camera 360° to line up the best possible shot.\n\n\u003cdiv\u003eThis Losmandy DVCM camera piggyback fits both Losmandy \"D-plate\" and Vixen-style accessory dovetails. It is precision-machined of aluminum and anodized black for long life. It can be used to support a 35mm or DSLR camera and lens for taking long exposure photo wide-field photos while your main scope tracks the sky. The DVCM provides a stable camera platform with a full 360° camera rotation, with no tools needed to mount it securely to your scope.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThe base of the Losmandy DVCM has dual slots that fit both the wider Losmandy \"D-plate\" accessory dovetail plates and narrower Vixen-style dovetail rails. A quick release knob lets you position the DVCM at any point along the length of the dovetail for balancing purposes and lock it securely in place, with no tools needed. A standard 1\/4\"-20 thread camera attachment bolt extends up through the camera platform of the DVCM to hold your camera. A large plastic knob on the bolt lets you lock the camera securely in place at any desired rotation angle.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThe DVCM weighs 10.75 ounces. The height from the top of the dovetail plate to the top of the camera mount with a Losmandy-style \"D-plate\" is 1.8\". Mounted on a Vixen-style dovetail rail, the height is 1.55\". \u003c\/div\u003e\n\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\"\u003e1 lb. 3 oz.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1 year\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n","brand":"Losmandy","offers":[{"title":"Default Title","offer_id":40481974747209,"sku":"DVCM","price":59.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/20096.jpg?v=1675378997"},{"product_id":"celestron-0-7x-focal-reducer-for-celestron-8-edgehd-scopes-and-optical-tubes","title":"Celestron 0.7X Focal Reducer For Celestron 8\" EdgeHD Scopes And Optical Tubes","description":"\u003cp\u003eThis Celestron EdgeHD 0.7x focal reducer turns your 8\" f\/10 EdgeHD telescope into a full f-stop faster f\/7 scope, increasing your photographic field of view by 43% and cutting your deep space exposure times in half . \u003c\/p\u003e\n\u003cdiv\u003eThis Celestron EdgeHD 0.7x focal reducer is a 4-element lens system that converts your 8\" f\/10 EdgeHD scope or optical tube into a fast f\/7 (1422mm focal length) optical system.  \u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThe Celestron reducer increases your photographic field of view by 43% to better capture wide field images and cuts your deep space exposure times in half, all the while maintaining the flat-field performance of the EdgeHD's native optical design. It provides an intermediate focal ratio between the 8\" EdgeHD's native f\/10 and the f\/2 ratio that is available with an optional Hyperstar accessory, making the EdgeHD the most complete imaging system in its price range.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThe 8\" EdgeHD reducer is optimized for use with APS-C size CCD sensors, which are found in most DSLR cameras and in the Celestron Nightscape CCD cameras.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThe EdgeHD focal reducer uses high index optical elements, including exotic extra low dispersion rare-earth Lanthanum elements, to provide high contrast imaging while minimizing chromatic aberration. All air to glass lens surfaces are fully multicoated for maximum light transmission and color correction. Lens edges are blackened to minimize internal reflection and maximize image contrast. \u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThe 8\" EdgeHD reducer threads directly onto the rear cell of all 8\" EdgeHD optical tubes, in place of the scope's visual back. The reducer shortens the 8HD's photographic back focus from 133mm to 105mm (measured from the reducer to the image plane). Used with an optional #93644 8\" EdgeHD T-adapter (with its extension tube removed) it is optimally matched to DSLRs, Celestron Nightscape CCDs, or any other camera with the standard 55mm back focus, with no other focal extension rings or accessories needed. The 105mm back focus allows its use with some off-axis guiders, such as the Celestron #OAG93648, but some additional accessories and\/or spacers may be required. \u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThreading the CNC machined aluminum housing of the reducer directly onto the rear cell reduces mechanical vignetting and maximizes imaging train rigidity. The CNC machined aluminum housing assures precise spacing and alignment of the optical elements. Threaded metal covers on both sides of the lens assembly protect your investment from dust and scratches.\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\" style=\"max-width: 500px;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 25%;\"\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e0.8 lbs.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 25%;\"\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e2 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":40481975533641,"sku":"8308HD","price":419.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/20133.jpg?v=1675379037"},{"product_id":"sky-watcher-quattro-imaging-newtonian-coma-corrector","title":"Sky-Watcher Quattro Imaging Newtonian Coma Corrector","description":"\u003cp\u003eThe necessary companion for the Quattro Imaging Newtonians to achieve true professional images.\u003c\/p\u003e\n\u003cp\u003eThe inherent problem with reflectors is coma as you start to get away from the center of the field.  So, to get rid of that particular aberration you will need a coma corrector like this one for your instrument.  This Sky-Watcher coma corrector will bring your Quattro imaging to the next level and deliver stunning wide field views with pinpoint star to the edge.\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003eFour-element, f\/4. \u003c\/li\u003e\n\u003cli\u003eFPL51 and Schött glass. \u003c\/li\u003e\n\u003cli\u003eOptimized for Quattro imaging Newtonians.\u003c\/li\u003e\n\u003cli\u003e Requires 55mmback focus. \u003c\/li\u003e\n\u003cli\u003eCan handle up to full-frame sensors. \u003c\/li\u003e\n\u003cli\u003eDoes not add magnification. \u003c\/li\u003e\n\u003cli\u003e48mm threads.\u003c\/li\u003e\n\u003c\/ul\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\u003eFocal Ratio\u003c\/th\u003e\n\u003ctd class=\"data\"\u003ef\/4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOptical Coatings\u003c\/th\u003e\n\u003ctd class=\"data\"\u003eFPL51 ED and Schott Glass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBack Focus\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e55mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Sky-Watcher","offers":[{"title":"Default Title","offer_id":40481978613833,"sku":"S20204","price":490.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/s20204_quattrocomacorrector-600x533.jpg?v=1675379235"},{"product_id":"astro-tech-0-8x-reducer-field-flattener-for-astro-tech-at80edt-triplet-apo-refractor","title":"Astro-Tech 0.8X Reducer\/Field Flattener For Astro-Tech AT80EDT Triplet APO Refractor","description":"\u003cp\u003eThis economical 0.8x focal reducer and field flattener is designed specifically for astrophotography with the Astro-Tech AT80EDT 80mm f\/6 triplet apo refractor.\u003c\/p\u003e\n\u003cdiv\u003eThis Astro-Tech #ATREDT8 0.8X focal reducer\/field flattener is designed specifically for prime focus astrophotography with the Astro-Tech AT80EDT ED triplet apo. While it may also work well with other brands and models of f\/6 refractors that use a 2\" focuser, its performance with other scopes is not guaranteed.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThe fully-multicoated Astro-Tech #ATREDT8 reducer\/flattener converts the 480mm focal length f\/6 Astro-Tech AT80EDT refractor into a 384mm f\/4.8 system for faster and wider field astronomical and terrestrial photography. \u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eIn addition to reducing the focal length of the telescope and thereby increasing the photographic speed, the #ATREDT8 flattens the normal field curvature inherent in all refractors. This provides images that are sharply focused out to the corners of DSLR and CCD imaging chips. Stars look sharp and point-like all the way across the field in your images. You don't have to worry about photos that are sharp in the center and blurry at the edges.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThe Astro-Tech #ATREDT8 reducer\/flattener can be connected to your AT80EDT in two different ways. The first is the most secure for extended imaging sessions. The 2\" barrel of the reducer is threaded at the top, as can be seen in the feature image above. If the 2\" accessory adapter is unthreaded from the camera angle adjuster on the scope, the reducer can be threaded onto the camera angle adjuster in its place for the most solid and secure connection.\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003eIn the second connection method, for casual imaging, the 2\" barrel of the #ATREDT8 can simply be slipped into the scope's 2\" focuser in place of your star diagonal. The 2\" telescope-side barrel of the reducer is threaded for standard 2\" filters and has a safety groove. \u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThe camera side of the #ATREDT8 reducer has 48mm T-threads to connect to a T-ring and DSLR camera body. A slip-on soft rubber cover protects the T-threads when the reducer is not in use, while a second slip-on cover is provided for the 2\" scope-side barrel. Back focus is 55mm from the shoulder of the reducer to the image plane, the standard spacing for DSLR camera bodies. \u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThis model will not work the black focuser body model AT80EDT.\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\" style=\"max-width: 500px;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 25%;\"\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e9.5 oz.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"width: 25%;\"\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1 year\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":"Astro-Tech","offers":[{"title":"Default Title","offer_id":40481979301961,"sku":"ATREDT8","price":199.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/astronomics_optimized-0057.jpg?v=1675379279"},{"product_id":"losmandy-108mm-photoguide-camera-3-ring-set-for-losmandy-and-vixen-dovetails","title":"Losmandy 108mm Photoguide\/Camera 3-Ring Set For Losmandy And Vixen Dovetails","description":"\u003cdiv\u003eThis Losmandy DVR108\/66 3-ring photoguide\/guider mounting ring set mounts a refractor photoguide scope (such as the Orion ShortTube 80) and a circular body CMOS autoguider (such as the Orion StarShoot AutoGuider) on an optional Losmandy D-series dovetail plate or Vixen-style dovetail plate. The 3-ring setup eliminates the possibility of flexure between the guide scope and the autoguider for sharper astrophotos.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eTwo 108mm i.d. rings hold the guide scope while a third 66mm i.d. ring stabilizes the autoguider behind the guide scope. The dovetail plate and Orion 80mm AutoGuider Scope Set shown in the feature image above are not included with the Losmandy DVR108\/66 ring set. They are shown only as an example of how the rings are used.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThe Losmandy DVR108\/66 rings work on both Losmandy D-plate and Vixen-style dovetail plates. The scope rings have a nominal 108mm (4.25\") internal diameter and will hold optical tubes with an o. d. of 2.95\" to 4\". The guider ring has a nominal 66mm (2.6\") i.d., just wide enough to hold the 2.5\" diameter StarShoot AutoGuider body. It is designed so that its ring center is the same height above a dovetail plate as the center of the 108mm rings. There are three large hand-tighten adjustment screws with non-marring Delrin tips in each ring. These allow you to aim the guide scope slightly off-axis to locate an appropriate guide star when imaging.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThe two black-anodized 108mm rings weigh 29 ounces per pair. The black-anodized 66mm ring weighs 14 ounces. The height from the top of a Losmandy D-series dovetail plate to the center of each ring is 3.437\". With a Vixen-style dovetail, the height is 3.187\". They mount on each Losmandy or Vixen-style dovetail plate with no tools required.\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\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e2.7 lbs.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e1 year\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"Losmandy","offers":[{"title":"Default Title","offer_id":40481980219465,"sku":"DVR10866","price":194.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/20461.jpg?v=1675379323"},{"product_id":"astro-tech-at60ed-field-flattener","title":"Astro-Tech AT60ED Field Flattener","description":"\u003cp\u003eThis thread on field flattener for the AT60ED is a must for full frame photography.The Astro-Tech 60ED 1x flattener easily threads on to the focuser of your AT60ED after your remove the standard compression ring eyepiece holder. The flattener produces wonderful flat fields as well as a 41mm image circle.\u003c\/p\u003e\n\u003cp\u003eThe threads on the t-ring side of the flattener are 48mm male. Make sure your t-ring will work with this particular flattener. The standard for years has been 42mm and not 48mm, so please double check your equipment.\u003c\/p\u003e\n\u003cp\u003eBackfocus from the rear shoulder of the AT60FF to the image plane is 54.8mm, so you may require some additional spacers to reach focus.\u003c\/p\u003e","brand":"Astro-Tech","offers":[{"title":"Default Title","offer_id":40481982873673,"sku":"AT60FF","price":119.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/img_5841.jpg?v=1675379503"},{"product_id":"explore-scientific-3-field-flattener-7x-focal-reducer","title":"Explore Scientific 3\" Field Flattener .7x Focal Reducer","description":"\u003cp\u003e\u003cspan\u003eExplore Scientific’s 3” Field Flattener .7x Focal Reducer is a multi-faceted accessory designed to enhance your astrophotography experiences.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe Explore Scientific 3\" Field Flattener\/.7x Focal Reducer is designed to increase your photographic enjoyment of your Explore Scientific refractor.  Depending on which refractor you own, you might need an additional adapter.  Out of the box you will be able to attach it to the 3\" Explore Scientific focuser.  However, you will need the #510366 adapter if you have the 2.5\" Hex focuser, or the 510364 adapter if you have the 2\" Explore Scientific focuser, to attach this piece of equipment to your scope.  \u003c\/p\u003e\n\u003cp\u003eOnce installed you should notice a few things.  1.  The stars are pinpoint out to the edge of your camera, no more curvature.  2. You will notice more sky in your field as you have reduced your f\/ratio by .7x.  And finally 3.  Your exposure times will  have decreased and your images will be brighter due to the faster optic.  \u003c\/p\u003e\n\u003cp\u003eExplore Scientific has thought of everything.  The device is fully multi-coated to help maximize light transmission, and it also comes standard with adapters to help your camera\/DSLR\/CCD attach.\u003c\/p\u003e\n\u003cp\u003eThis piece really works well from f\/8 to f\/7.5.\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\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":40481983594569,"sku":"ES3FF","price":399.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/f1_1493x_a6f9b499-81ca-4bfe-9c41-784353fe5654.jpg?v=1675379560"},{"product_id":"explore-scientific-adapter-for-3-field-flattener-7x-reducer-to-attach-to-2-5-hex-focuser","title":"Explore Scientific Adapter For 3\" Field Flattener .7x Reducer To Attach To 2.5\" Hex Focuser","description":"\u003cp\u003e \u003c\/p\u003e\n\u003ch3 data-end=\"414\" data-start=\"316\"\u003eExplore Scientific Adapter for 3\" Field Flattener \/ 0.7x Reducer to Attach to 2.5\" Hex Focuser\u003c\/h3\u003e\n\u003cp data-end=\"810\" data-start=\"416\"\u003eIf you're using the Explore Scientific 2.5\" Hex Focuser and looking to expand your astrophotography capabilities, this dedicated adapter lets you seamlessly integrate the Explore Scientific 3\" Field Flattener \/ 0.7x Reducer with your imaging setup. It’s a simple yet critical upgrade for achieving pinpoint stars across a wider field and reducing your effective focal length for faster imaging.\u003c\/p\u003e\n\u003ch4 data-end=\"856\" data-start=\"812\"\u003ePrecision Fit and Optical Compatibility\u003c\/h4\u003e\n\u003cp data-end=\"1202\" data-start=\"858\"\u003eDesigned specifically by Explore Scientific, this adapter ensures a secure mechanical connection between your 2.5\" Hexagonal focuser and the larger 3\" flattener\/reducer assembly. This is not a generic part — it's engineered for precise alignment and rigidity to maintain the critical backfocus and optical path required for optimal performance.\u003c\/p\u003e\n\u003cp data-end=\"1468\" data-start=\"1204\"\u003eThe adapter threads directly onto the rear of the 2.5\" Hex Focuser, replacing the standard 2\" or 2.5\" visual back. On the flattener\/reducer side, it accepts the 3\" component with an exact fit, ensuring no tilt, flex, or misalignment that could degrade your images.\u003c\/p\u003e\n\u003ch4 data-end=\"1504\" data-start=\"1470\"\u003eDesigned for Astrophotography\u003c\/h4\u003e\n\u003cp data-end=\"1892\" data-start=\"1506\"\u003eThis adapter exists purely for imagers. When combined with the 3\" Field Flattener \/ 0.7x Reducer, you'll get a flatter, wider field with reduced vignetting, making it perfect for full-frame and APS-C sensors. The reducer drops your focal ratio by 30%, allowing for shorter exposures and improved performance with faint targets — ideal for nebulae, wide star fields, and larger galaxies.\u003c\/p\u003e\n\u003cp data-end=\"2125\" data-start=\"1894\"\u003eWhether you're using an Explore Scientific ED102, ED127, or other compatible refractor with a 2.5\" Hex Focuser, this adapter makes it possible to expand your system with the more robust 3\" optics designed for larger-format imaging.\u003c\/p\u003e\n\u003ch4 data-end=\"2145\" data-start=\"2127\"\u003eBuilt to Last\u003c\/h4\u003e\n\u003cp data-end=\"2438\" data-start=\"2147\"\u003eMachined from high-quality aluminum with a black anodized finish, this adapter is both durable and lightweight. The internal surfaces are matte black to reduce stray reflections and maintain image contrast. Threading is clean and precise, providing a solid mechanical lock with minimal play.\u003c\/p\u003e\n\u003ch4 data-end=\"2464\" data-start=\"2440\"\u003eNo Tools, No Hassle\u003c\/h4\u003e\n\u003cp data-end=\"2773\" data-start=\"2466\"\u003eInstallation is straightforward. Simply unthread the existing rear accessory collar from your 2.5\" Hex Focuser, thread on the adapter, and then connect your 3\" reducer\/flattener. Once everything is locked into place, you're ready to attach your imaging train and begin capturing sharper, wider-field images.\u003c\/p\u003e\n\u003ch4 data-end=\"2793\" data-start=\"2775\"\u003eKey Features:\u003c\/h4\u003e\n\u003cul data-end=\"3180\" data-start=\"2795\"\u003e\n\u003cli data-end=\"2892\" data-start=\"2795\"\u003eAllows attachment of Explore Scientific 3\" Field Flattener \/ 0.7x Reducer to 2.5\" Hex Focuser\u003c\/li\u003e\n\u003cli data-end=\"2942\" data-start=\"2893\"\u003eCustom-threaded for perfect fit and alignment\u003c\/li\u003e\n\u003cli data-end=\"2997\" data-start=\"2943\"\u003eMaintains critical backfocus and optical integrity\u003c\/li\u003e\n\u003cli data-end=\"3047\" data-start=\"2998\"\u003eIdeal for full-frame and APS-C sensor cameras\u003c\/li\u003e\n\u003cli data-end=\"3119\" data-start=\"3048\"\u003eMachined aluminum construction with anti-reflective interior finish\u003c\/li\u003e\n\u003cli data-end=\"3180\" data-start=\"3120\"\u003eSimple installation — no modifications or tools required\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 data-end=\"3197\" data-start=\"3182\"\u003eIn Summary\u003c\/h4\u003e\n\u003cp data-end=\"3521\" data-start=\"3199\"\u003eIf you're serious about wide-field astrophotography and want to take full advantage of your Explore Scientific optics, this adapter is an essential piece of the puzzle. It bridges the gap between your high-precision focuser and the power of the 3\" reducer\/flattener system, unlocking better image quality across the board.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-family: -apple-system, BlinkMacSystemFont, 'San Francisco', 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif; font-size: 0.875rem;\"\u003eTech Details: \u003c\/span\u003e\u003c\/p\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":40481983660105,"sku":"510366","price":89.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/es_0510366_1_1493x_106f2c37-8542-462b-a913-b1267ce664bf.jpg?v=1675379566"},{"product_id":"astro-tech-152mm-edt-72x-reducer-field-flattener","title":"Astro-Tech AT152EDT .8X Reducer Field Flattener","description":"\u003cp\u003eThe Astro-Tech AT152FF 0.8x focal reducer\/field flattener is designed specifically for prime focus astrophotography with the AT152EDT triplet refractor.\u003c\/p\u003e\n\u003cp\u003eThe fully-multicoated reducer\/flattener converts the 1216mm fl 152EDT into an 973mm f\/6.4 photographic system.\u003c\/p\u003e\n\u003cp\u003eNot only do you get to speed up your scope, it will also flatten the normal field curvature inherent in all refractors.\u003c\/p\u003e\n\u003cp\u003eInstallation is simple. Just unthread the 2\" adapter from the focuser drawtube. This will expose the 92mm threads. Now, just thread the AT152FF in its place and you are ready to go.\u003c\/p\u003e\n\u003cp\u003eThe camera side of the reducer has 48mm t-threads, so make sure your t-ring will work.\u003c\/p\u003e","brand":"Astro-Tech","offers":[{"title":"Default Title","offer_id":40481985069129,"sku":"AT152FF","price":299.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/at152ffbw.jpg?v=1675379657"},{"product_id":"sky-watcher-0-85x-focal-reducer-corrector-for-pro-ed80-telescope","title":"Sky-Watcher 0.85x Focal Reducer\/Corrector For Pro 80 ED APO Telescope S20200","description":".85x Reduction For Your Sky-Watcher Pro 80 ED APO Refractor Helps Correct Distortion Out to the Edge of the Field Requires a 48mm T-Ring\n\u003cp\u003eSo you want to take the nest step up in your photography with your Sky-Watcher 80mm ED refractor.  This Sky-Watcher .85x Focal Reducer\/Corrector will get you on your way.  The Sky-Watcher S20200 will reduce the focal length by 0.85x effectively widening your photographic field.  However, it will also correct at the edges of the field helping to flatten out the field.\u003c\/p\u003e\n\u003cp\u003eThis reducer requires a 48mm T-Ring.\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\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e.7 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e2 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Sky-Watcher","offers":[{"title":"Default Title","offer_id":40481985396809,"sku":"S20200","price":370.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/s20200.jpg?v=1675379676"},{"product_id":"sky-watcher-0-85x-focal-reducer-corrector-for-pro-100-ed-apo-telescope","title":"Sky-Watcher 0.85x Focal Reducer \/ Corrector For Pro 100 ED APO Telescope S20201","description":".85x Reduction For Your Sky-Watcher Pro 100 ED APO Refractor Helps Correct Distortion Out to the Edge of the Field Requires a 48mm T-Ring\n\u003cp\u003eSo you want to take the nest step up in your photography with your Sky-Watcher 100mm ED refractor.  This Sky-Watcher .85x Focal Reducer\/Corrector will get you on your way.  The Sky-Watcher S20201 will reduce the focal length by 0.85x effectively widening your photographic field.  However, it will also correct at the edges of the field helping to flatten out the field.\u003c\/p\u003e\n\u003cp\u003eThis reducer requires a 48mm T-Ring.\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\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e.7 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e2 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Sky-Watcher","offers":[{"title":"Default Title","offer_id":40481985429577,"sku":"S20201","price":380.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/s20201_reducercorrecto_large_5d3fada5-dc64-415a-86dd-a1e2d3fcc284.jpg?v=1675379678"},{"product_id":"sky-watcher-0-85x-focal-reducer-corrector-for-pro-120-ed-apo-telescope","title":"Sky-Watcher 0.85x Focal Reducer\/Corrector For Pro 120 ED APO Telescope S20202","description":".85x Reduction For Your Sky-Watcher Pro 120 ED APO Refractor and 150ED Refractor. Helps Correct Distortion Out to the Edge of the Field Requires a 48mm T-Ring\n\u003cp\u003eSo you want to take the nest step up in your photography with your Sky-Watcher 120mm ED or 150mm ED refractor.  This Sky-Watcher .85x Focal Reducer\/Corrector will get you on your way.  The Sky-Watcher S20202 will reduce the focal length by 0.85x effectively widening your photographic field.  However, it will also correct at the edges of the field helping to flatten out the field.\u003c\/p\u003e\n\u003cp\u003eThis reducer requires a 48mm T-Ring.\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\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e.7 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e2 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Sky-Watcher","offers":[{"title":"Default Title","offer_id":40481985495113,"sku":"S20202","price":395.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/s20202_reducercorrecto_large_c79bafc5-d7a5-4523-a4f7-03ad0885c7d6.jpg?v=1675379680"},{"product_id":"celestron-7x-reducer-lens-for-the-edgehd-925","title":"Celestron .7X Reducer Lens For The EdgeHD 925","description":"\u003cp\u003eThe EdgeHD .7x Focal Reducer Lens makes your EdgeHD 9.25\" one full F-Stop faster than f\/10, reducing your exposure time by half to capture the same brightness of object 4-element lens design\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMaintains similar flat-field performance as native EdgeHD optical design\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eIncreases field of view by 43% to better capture wide field images\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eThreads directly onto the 3.25\" threads of the EdgeHD which reduces mechanical vignetting and allows for use with larger (full frame) sensors and Off-Axis Guiders\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eMaintains the identical back focus when used at f\/10 and provides generous back focus to accommodate additional accessories and wide variety of cameras\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eAllows use of existing EdgeHD T-Adapters with or without the Reducer Lens\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCelestron’s new EdgeHD reducers feature a custom 4-element optical design engineered to maintain the flat-field performance of our award winning EdgeHD optical system. Unlike generic reducers, our premium reducers provide substantial back focus to accommodate an assortment of imaging accessories.\u003c\/p\u003e\n\u003cp\u003eEdgeHD reducers offer high index optical elements, including extra low dispersion, exotic Lanthanum elements, which provide high contrast viewing while minimizing chromatic aberration. All air to glass lens surfaces feature multiple layers of coating for maximum light transmission and color correction and contain blacken edges to minimize internal reflection and maximize image contrast. Large diameter lens elements, up to 60 mm clear aperture, ensure that the optimized image circle remains at a generous 42 mm for use with large CCD sensors.\u003c\/p\u003e\n\u003cp\u003eIncorporating computer assisted CNC machined aluminum housing, for precise spacing and alignment of optical elements, and threaded metal covers on the lens assembly to protect your investment from dust and scratches, our reducers offer you an outstanding mechanical design.\u003c\/p\u003e\n\u003cp\u003eWith the fastar option on all EdgeHD optical systems, coupled with the .7x reducer, your telescope becomes the most complete imaging system available in its price range today.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePerformance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDesign:\u003c\/strong\u003e 4-element optical layout designed specifically for the EdgeHD 9.25\" to maintain the flat-field performance of the EdgeHD optical design\u003cbr\u003e\u003cstrong\u003eMaintains the same back focus as when used at f\/10:\u003c\/strong\u003e Unlike generic reducers the EdgeHD .7x provides generous back focus to accommodate additional accessories and a wide variety of cameras. Also allows use of existing EdgeHD T-Adapters and other Celestron imaging accessories\u003cbr\u003e\u003cstrong\u003eOne full F-Stop faster than f\/10:\u003c\/strong\u003e Reduces the exposure time by one-half to capture the same brightness of object\u003cbr\u003e\u003cstrong\u003eIncrease field of view by 43%:\u003c\/strong\u003e Better for capturing wide field images of larger galaxies and nebulae\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGlass\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLanthanum Glass Elements:\u003c\/strong\u003e EdgeHD reducer uses \"rare earth\" Lanthanum glass elements for clear, high contrast viewing while minimizing chromatic aberration\u003cbr\u003e\u003cstrong\u003eFully multi-coated lens elements:\u003c\/strong\u003e All air-to-glass surfaces have multiple layers of coating for maximum light transmission and color correction\u003cbr\u003e\u003cstrong\u003eBlacken edges:\u003c\/strong\u003e All lens elements have blacken edges to minimize internal reflection and maximize contras\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFull Frame Design\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThreads directly onto the 3.25\" threads of the EdgeHD optical tube:\u003c\/strong\u003e Reduces mechanical vignetting and allows for use with larger (full frame) sensors and Off-Axis Guiders\u003cbr\u003e\u003cstrong\u003eClear aperture:\u003c\/strong\u003e 60 mm clear aperture lens optimized for a 42 mm image circle for use with large CCD sensors.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMechanical Design\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMachined aluminum housing:\u003c\/strong\u003e Computer assisted CNC machined aluminum housing for precise spacing and alignment of the optical elements.\u003cbr\u003e\u003cstrong\u003eThreaded metal covers for both ends of the lens assembly:\u003c\/strong\u003e To protect your investment from unwanted dust and scratches.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVersatility\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFastar compatibility and f\/2 imaging with optional accessory:\u003c\/strong\u003e the EdgeHD is the most complete imaging system in its price range.\u003c\/p\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":40481987002441,"sku":"94245","price":439.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/94245_reducer_lens_edgehd_9.25_1_570x380_2x_7ccbfea6-bc0a-409f-b8eb-6d895b152f52.jpg?v=1675379772"},{"product_id":"astro-tech-8x-reducer-field-flattener-for-the-60ed-and-72ed-optical-tubes","title":"Astro-Tech .8X Reducer Field Flattener For The 72EDII Optical Tubes","description":"Looking to make your Astro-Tech (or variant) scope faster and flatter for photography?  Then the .8x reducer\/flattener is exactly what your are looking for.\u003cp\u003eWhile this Astro-Tech ATRF72 0.8X reducer\/field flattener is designed for prime focus astrophotography with the Astro-Tech  AT72EDII, it will work with other variants of the same optical tube. Feel free to give us a call if you have a question about your scope if it isn’t an Astro-Tech product. 800-422-7876\u003c\/p\u003e\n\u003cp\u003eThe fully-multicoated Astro-Tech ATRF72 converts the 430mm focal length f\/6 Astro-Tech AT72ED refractor into a 344mm f\/4.8 lens for faster and wider field astronomical and terrestrial photography.\u003c\/p\u003e\n\u003cp\u003eIn addition to reducing the focal length of the telescope and thereby increasing the photographic speed, the ATRF72 flattens the normal field curvature inherent in all refractors to provide images that are sharply focused out to the very corners of a large format DSLR chip. Stars look sharp and point-like all the way across the field in your images. You don't have to worry about photos that are sharp in the center and blurry at the edges.\u003c\/p\u003e\n\u003cp\u003eThe Astro-Tech ATRF72 reducer\/flattener threads on the 72EDII focusers. The flattener is threaded for attachment to the telescope via a 54mm metric thread. The camera side of the reducer has 48mm T-threads to connect to a T-ring and camera body. Back focus is 55mm from the shoulder of the reducer to the image plane, the standard spacing for 35mm and DSLR camera bodies.\u003c\/p\u003e\n\u003cp\u003eThe interior of the telescope side of the reducer\/field flattener is a 48mm female thread so standard 2\" filters can thread right in.\u003c\/p\u003e","brand":"Astro-Tech","offers":[{"title":"Default Title","offer_id":40481989001289,"sku":"ATRF72","price":159.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/files\/Astronomics-Astronomy-Store-telescopes-78.png?v=1714677676"},{"product_id":"astro-tech-8x-reducer-field-flattener-for-the-60ed-optical-tubes","title":"Astro-Tech .8X Reducer Field Flattener For The 60ED Optical Tubes","description":"Looking to make your Astro-Tech (or variant) scope faster and flatter for photography?  Then the .8x reducer\/flattener is exactly what your are looking for.\u003cp\u003eWhile this Astro-Tech ATRF60 0.8X reducer\/field flattener is designed for prime focus astrophotography with the Astro-Tech  AT60ED, it will work with other variants of the same optical tube. Feel free to give us a call if you have a question about your scope if it isn’t an Astro-Tech product. 800-422-7876\u003c\/p\u003e\r\n\u003cp\u003eThe fully-multicoated Astro-Tech ATRF60 converts the 360mm focal length f\/6 Astro-Tech AT60ED refractor into a 288mm f\/4.8 lens for faster and wider field astronomical and terrestrial photography.\u003c\/p\u003e\r\n\u003cp\u003eIn addition to reducing the focal length of the telescope and thereby increasing the photographic speed, the ATRF60 flattens the normal field curvature inherent in all refractors to provide images that are sharply focused out to the very corners of a large format DSLR chip. Stars look sharp and point-like all the way across the field in your images. You don't have to worry about photos that are sharp in the center and blurry at the edges.\u003c\/p\u003e\r\n\u003cp\u003eThe Astro-Tech ATRF60 reducer\/flattener threads on the 60ED focusers. The flattener is threaded for attachment to the telescope via a 54mm metric thread. The camera side of the reducer has 48mm T-threads to connect to a T-ring and camera body. Back focus is 55mm from the shoulder of the reducer to the image plane, the standard spacing for 35mm and DSLR camera bodies.\u003c\/p\u003e\r\n\u003cp\u003eThe interior of the telescope side of the reducer\/field flattener is a 48mm female thread so standard 2\" filters can thread right in.\u003c\/p\u003e","brand":"Astro-Tech","offers":[{"title":"Default Title","offer_id":40481989034057,"sku":"ATRF60","price":159.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/files\/Astronomics-Astronomy-Store-telescopes-87.png?v=1714677601"},{"product_id":"zwo-efw-8-position-filter-wheel-for-1-25-and-31-mm-filters","title":"ZWO EFW 8-Position Filter Wheel For 1.25\" And 31mm Filters","description":"\u003ch3 data-start=\"67\" data-end=\"167\"\u003eZWO EFW-8x1.25\" Electronic Filter Wheel – Precision, Automation, and Seamless Astrophotography\u003c\/h3\u003e\n\u003cp data-start=\"169\" data-end=\"753\"\u003eWhen it comes to astrophotography, precision is everything. 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It’s fully compatible with popular astrophotography software like \u003cstrong data-start=\"3798\" data-end=\"3860\"\u003eSharpCap, NINA, SGP, FireCapture, and ZWO’s own ASI Studio\u003c\/strong\u003e, ensuring a seamless experience from start to finish.\u003c\/p\u003e\n\u003ch4 data-start=\"3918\" data-end=\"3950\"\u003eTechnical Specifications:\u003c\/h4\u003e\n\u003cul data-start=\"3952\" data-end=\"4340\"\u003e\n\u003cli data-start=\"3952\" data-end=\"4030\"\u003e\n\u003cstrong data-start=\"3954\" data-end=\"3974\"\u003eFilter Capacity:\u003c\/strong\u003e Holds up to eight 1.25-inch or 31mm unmounted filters\u003c\/li\u003e\n\u003cli data-start=\"4031\" data-end=\"4054\"\u003e\n\u003cstrong data-start=\"4033\" data-end=\"4047\"\u003eThickness:\u003c\/strong\u003e 20mm\u003c\/li\u003e\n\u003cli data-start=\"4055\" data-end=\"4080\"\u003e\n\u003cstrong data-start=\"4057\" data-end=\"4068\"\u003eWeight:\u003c\/strong\u003e 14 ounces\u003c\/li\u003e\n\u003cli data-start=\"4081\" data-end=\"4131\"\u003e\n\u003cstrong data-start=\"4083\" data-end=\"4093\"\u003ePower:\u003c\/strong\u003e USB 2.0, no external power required\u003c\/li\u003e\n\u003cli data-start=\"4132\" data-end=\"4210\"\u003e\n\u003cstrong data-start=\"4134\" data-end=\"4152\"\u003eCompatibility:\u003c\/strong\u003e Works with ZWO ASI cameras and most third-party filters\u003c\/li\u003e\n\u003cli data-start=\"4211\" data-end=\"4268\"\u003e\n\u003cstrong data-start=\"4213\" data-end=\"4228\"\u003eMotor Type:\u003c\/strong\u003e Japanese high-precision stepper motor\u003c\/li\u003e\n\u003cli data-start=\"4269\" data-end=\"4340\"\u003e\n\u003cstrong data-start=\"4271\" data-end=\"4290\"\u003eRotation Speed:\u003c\/strong\u003e Fast and quiet operation with precise alignment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 data-start=\"4342\" data-end=\"4380\"\u003eWhy Choose the ZWO EFW-8x1.25\"?\u003c\/h4\u003e\n\u003cp data-start=\"4382\" data-end=\"4707\"\u003eFor astrophotographers who need reliability, automation, and precision, the \u003cstrong data-start=\"4458\" data-end=\"4501\"\u003eZWO EFW-8x1.25\" Electronic Filter Wheel\u003c\/strong\u003e is an excellent investment. Its lightweight design, seamless software integration, and accurate motorized filter changes make it an essential piece of equipment for capturing professional-quality images.\u003c\/p\u003e\n\u003cp data-start=\"4709\" data-end=\"4842\"\u003eUpgrade your astrophotography setup today and experience the convenience of automatic filter changes with ZWO’s trusted technology.\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\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e14 ounces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e2 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":40481991131209,"sku":"EFW8","price":299.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/1024x1024.jpg?v=1675380003"},{"product_id":"astro-tech-0-8x-reducer-field-flattener-for-astro-tech-at115edt-triplet-apo-refractor","title":"Astro-Tech 0.8X Reducer\/Field Flattener For Astro-Tech AT115EDT Triplet APO Refractor Version II","description":"\u003cp\u003eYou've got 115mm of ED triplet glass pointed at the sky. The AT115EDT's optics deliver clean color correction — three FK-61 elements working together the way they should. But point a camera at the focal plane and the triplet shows you what it doesn't correct natively: field curvature. Center stars are tight and round. Corner stars are not. They stretch, they soften, they remind you that a refractor designed for visual use doesn't automatically produce flat-field images. The ATREDT15V2 fixes that. It flattens the field and reduces the focal length at the same time — converting 805mm f\/7 into 644mm f\/5.6 with sharp, corrected stars across your sensor.\u003c\/p\u003e\n\u003cp\u003eThat focal reduction matters more than the number suggests. At f\/5.6, your exposures run approximately 36% shorter than at f\/7 for the same signal. On a narrowband target at 5-minute subs, that's real time saved — or, looked at another way, significantly more signal per frame. The wider field of view means objects that were tight fits at 805mm now have room to breathe. The Rosette Nebula, the Orion Nebula, the Veil Nebula — they all frame more comfortably at 644mm than they do at native focal length.\u003c\/p\u003e\n\u003cp\u003eThe ATREDT15V2 threads into the focuser drawtube or camera angle adjuster of the AT115EDT via M63×1 threads. This is a secure, rigid connection — no barrel slip, no adapter stack flexing under your camera's weight. The camera side uses standard 48mm T-threads, connecting to a T-ring for DSLR and mirrorless bodies, or directly to dedicated CMOS and CCD astronomy cameras, which come with 48mm T-threads built in. Back focus is 55mm from the reducer shoulder to the image plane, which is the standard spacing for most DSLR T-ring combinations and dedicated camera setups.\u003c\/p\u003e\n\u003cp\u003eFully multi-coated with broadband anti-reflection coatings on all optical surfaces. Slip-on rubber dust covers are included for both ends — scope side and camera side — to protect the coated glass between imaging sessions.\u003c\/p\u003e\n\u003ch3\u003eImportant: Which Reducer for Which Focuser\u003c\/h3\u003e\n\u003cp\u003eThe AT115EDT has been produced with different focuser versions over its production run. This reducer — the ATREDT15V2 — is designed for the 2.5-inch focuser with M63×1 drawtube threads. If your AT115EDT has the newer 3.2-inch focuser with M92 drawtube threads, you would want to consider the AT115EDTRFv3 instead. However, this model will work the the 3.2\" focuser, it just won't produce as large an image circle. \u003c\/p\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAstro-Tech ATREDT15V2 0.8× reducer\/field flattener\u003c\/li\u003e\n\u003cli\u003eSlip-on rubber dust cover (scope side)\u003c\/li\u003e\n\u003cli\u003eSlip-on rubber dust cover (camera side)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e0.8× focal reduction\u003c\/strong\u003e — Converts the AT115EDT from 805mm f\/7 to 644mm f\/5.6. Approximately 36% shorter exposures for the same signal, and a meaningfully wider field of view for framing large deep-sky objects.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eField flattener integrated\u003c\/strong\u003e — Corrects the native field curvature of the AT115EDT triplet. Stars stay sharp and round from center to corner across your imaging sensor. No separate flattener needed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM63×1 scope-side connection\u003c\/strong\u003e — Threads directly into the AT115EDT's 2.5-inch focuser drawtube or camera angle adjuster. Rigid, secure, no barrel slip or flexure under camera weight.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e48mm T-threads on camera side\u003c\/strong\u003e — DSLR and mirrorless bodies connect via a T-ring for your specific mount (sold separately). Dedicated CMOS and CCD astronomy cameras attach directly — 48mm T-threads are standard on most.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e55mm back focus\u003c\/strong\u003e — Standard spacing from reducer shoulder to image plane. Most DSLR T-ring combinations and dedicated camera setups reach this distance naturally. If your setup differs, shim with T-thread spacers to hit 55mm precisely.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFully multi-coated optics\u003c\/strong\u003e — Broadband anti-reflection coatings on all surfaces. Contrast is preserved and internal reflections are controlled — important for narrowband work where stray light shows up fast.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDust covers included\u003c\/strong\u003e — Slip-on rubber covers for both ends. Protect the coated surfaces when the reducer isn't on the scope.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact, lightweight\u003c\/strong\u003e — Adds minimal weight and length to your imaging train. The AT115EDT's balance point barely shifts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eObserving Tip\u003c\/h3\u003e\n\u003cp\u003eGetting the back focus right is the single most important thing you can do with this reducer. At 55mm, the field correction is optimized — sharp stars to the corners. Too short or too long, and you'll see elongated stars at the edges that no amount of post-processing will fix. Measure from the reducer's shoulder (the flat face where it meets the T-ring or camera adapter) to your sensor. A set of T-thread spacers (AT4220 and AT4230) lets you dial in the exact distance. It's worth spending ten minutes with a ruler before your first imaging session — the results on screen will tell you immediately whether you got it right.\u003c\/p\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need a T-ring to connect my camera?\u003c\/strong\u003e\u003cbr\u003eIt depends on your camera. Dedicated CMOS and CCD astronomy cameras (ZWO, QHY, Player One, and similar) typically have 48mm T-threads built in and connect directly to the ATREDT15V2 — no T-ring needed. DSLR and mirrorless cameras (Canon, Nikon, Sony, and others) connect via a T-ring for your specific lens mount. The T-ring is sold separately.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use filters with this reducer?\u003c\/strong\u003e\u003cbr\u003eThe ATREDT15V2 does have an internal filter threads like the V3 version. Just unthread the knurled ring on the top of the reducer to expose the fitler threads on the underside of it.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat happens if my back focus is off?\u003c\/strong\u003e\u003cbr\u003eYou'll see elongated or distorted stars at the edges of your images — the field correction is optimized for 55mm. Too short and stars stretch one way; too long and they stretch the other. Use T-thread spacers to fine-tune the distance. Measure from the reducer shoulder to your sensor before your first session.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use this with other telescopes?\u003c\/strong\u003e\u003cbr\u003eIt may work with other f\/7 refractors that have a 2.5-inch focuser with M63×1 threads, but we can only confirm performance with the AT115EDT. The optical design is matched to the AT115EDT's focal length and field curvature. Using it with other scopes may produce usable results, but we can't guarantee corner correction.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow does this compare to the 1× field flattener?\u003c\/strong\u003e\u003cbr\u003eThe 1× flattener (AT115EDTFF) corrects field curvature without changing the focal length — you stay at 805mm f\/7. The 0.8× reducer (this product) both flattens the field and shortens the focal length to 644mm f\/5.6. Use the 1× flattener when you want maximum image scale and don't need faster exposures. Use the 0.8× reducer when you want a wider field and shorter exposures. Most AT115EDT imagers end up using the reducer more often.\u003c\/p\u003e\n\u003ch3\u003eFinal Thoughts\u003c\/h3\u003e\n\u003cp\u003eIf you're imaging with an AT115EDT that has the 2.5-inch focuser, the ATREDT15V2 is the reducer that was designed for it. The optical correction is matched to the AT115EDT's triplet, the M63 threading gives you a rigid connection without adapter stacks, and 644mm at f\/5.6 opens up the wide-field deep-sky targets that are cramped at native focal length. It does two things — flattens the field and speeds up the system — and it does both well. Get the back focus right at 55mm, and the corners of your frames will tell you the rest.\u003c\/p\u003e\n\u003ch2\u003eTech Details:\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background-color: #f0f4f8;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003eATREDT15V2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #ffffff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eCompatible Telescope\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003eAT115EDT (2.5\" and 3.2\" Grey focusers)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f0f4f8;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eFocal Reduction\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003e0.8×\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #ffffff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eResulting Focal Length\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003e644mm (from 805mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f0f4f8;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eResulting Focal Ratio\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003ef\/5.6 (from f\/7)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #ffffff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eScope Connection\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003eM63×1 threads (into 2.5\" focuser drawtube or CAA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f0f4f8;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eCamera Connection\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003e48mm T-threads\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #ffffff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eBack Focus\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003e55mm (reducer shoulder to sensor)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f0f4f8;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eCoatings\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003eFully multi-coated, broadband AR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #ffffff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eIncluded Accessories\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003eSlip-on rubber dust covers (scope side and camera side)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Astro-Tech","offers":[{"title":"Default Title","offer_id":40481992736841,"sku":"ATREDT15V2","price":229.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/astronomics_optimized-0056.jpg?v=1675380119"},{"product_id":"astro-tech-0-8x-reducer-field-flattener-for-astro-tech-at130edt-triplet-apo-refractor","title":"Astro-Tech 0.8X Reducer\/Field Flattener For Astro-Tech AT130EDT Triplet APO Refractor Version II","description":"\u003cp\u003eYou've got 130mm of ED triplet glass pointed at the sky. The AT130EDT's optics deliver clean color correction — three FK-61 elements working together the way they should. But point a camera at the focal plane and the triplet shows you what it doesn't correct natively: field curvature. Center stars are tight and round. Corner stars are not. They stretch, they soften, they remind you that a refractor designed for visual use doesn't automatically produce flat-field images. The ATREDT30V2 fixes that. It flattens the field and reduces the focal length at the same time — converting 910mm f\/7 into 728mm f\/5.6 with sharp, corrected stars across your sensor.\u003c\/p\u003e\n\u003cp\u003eThat focal reduction matters more than the number suggests. At f\/5.6, your exposures run approximately 36% shorter than at f\/7 for the same signal. On a narrowband target at 5-minute subs, that's real time saved — or, looked at another way, significantly more signal per frame. The wider field of view means objects that were tight fits at 910mm now have room to breathe. The Rosette Nebula, the North America Nebula complex, the California Nebula — they all frame more comfortably at 728mm than they do at native focal length.\u003c\/p\u003e\n\u003cp\u003eThe ATREDT30V2 threads into the focuser drawtube or camera angle adjuster of the AT130EDT via M63×1 threads. This is a secure, rigid connection — no barrel slip, no adapter stack flexing under your camera's weight. The camera side uses standard 48mm T-threads, connecting to a T-ring for DSLR and mirrorless bodies, or directly to dedicated CMOS and CCD astronomy cameras, which come with 48mm T-threads built in. Back focus is 55mm from the reducer shoulder to the image plane, which is the standard spacing for most DSLR T-ring combinations and dedicated camera setups.\u003c\/p\u003e\n\u003cp\u003eFully multi-coated with broadband anti-reflection coatings on all optical surfaces. Slip-on rubber dust covers are included for both ends — scope side and camera side — to protect the coated glass between imaging sessions.\u003c\/p\u003e\n\u003ch3\u003eImportant: Which Reducer for Which Focuser\u003c\/h3\u003e\n\u003cp\u003eThe AT130EDT has been produced with different focuser versions over its production run. This reducer — the ATREDT30V2 — is designed for the 2.5-inch focuser with M63×1 drawtube threads, but it can work with the new 3.2\" focuser. If your AT130EDT has the newer 3.2-inch focuser with M92 drawtube threads, you might want to consider the  AT130EDTRFv3 as it produces a larger image circle.  This reducer will also not work with the original black-bodied focuser model. If you're not sure which focuser you have, check the drawtube diameter or call us.\u003c\/p\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAstro-Tech ATREDT30V2 0.8× reducer\/field flattener\u003c\/li\u003e\n\u003cli\u003eSlip-on rubber dust cover (scope side)\u003c\/li\u003e\n\u003cli\u003eSlip-on rubber dust cover (camera side)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e0.8× focal reduction\u003c\/strong\u003e — Converts the AT130EDT from 910mm f\/7 to 728mm f\/5.6. Approximately 36% shorter exposures for the same signal, and a meaningfully wider field of view for framing large deep-sky objects.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eField flattener integrated\u003c\/strong\u003e — Corrects the native field curvature of the AT130EDT triplet. Stars stay sharp and round from center to corner across your imaging sensor. No separate flattener needed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM63×1 scope-side connection\u003c\/strong\u003e — Threads directly into the AT130EDT's 2.5-inch focuser drawtube or camera angle adjuster. Rigid, secure, no barrel slip or flexure under camera weight.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e48mm T-threads on camera side\u003c\/strong\u003e — DSLR and mirrorless bodies connect via a T-ring for your specific mount (sold separately). Dedicated CMOS and CCD astronomy cameras attach directly — 48mm T-threads are standard on most.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e55mm back focus\u003c\/strong\u003e — Standard spacing from reducer shoulder to image plane. Most DSLR T-ring combinations and dedicated camera setups reach this distance naturally. If your setup differs, shim with T-thread spacers to hit 55mm precisely.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFully multi-coated optics\u003c\/strong\u003e — Broadband anti-reflection coatings on all surfaces. Contrast is preserved and internal reflections are controlled — important for narrowband work where stray light shows up fast.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDust covers included\u003c\/strong\u003e — Slip-on rubber covers for both ends. Protect the coated surfaces when the reducer isn't on the scope.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact, lightweight\u003c\/strong\u003e — Adds minimal weight and length to your imaging train. The AT130EDT's balance point barely shifts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eObserving Tip\u003c\/h3\u003e\n\u003cp\u003eGetting the back focus right is the single most important thing you can do with this reducer. At 55mm, the field correction is optimized — sharp stars to the corners. Too short or too long, and you'll see elongated stars at the edges that no amount of post-processing will fix. Measure from the reducer's shoulder (the flat face where it meets the T-ring or camera adapter) to your sensor. A set of T-thread spacers (AT4220 and AT4230) lets you dial in the exact distance. It's worth spending ten minutes with a ruler before your first imaging session — the results on screen will tell you immediately whether you got it right.\u003c\/p\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWill this work on the AT130EDT with the 3.2-inch focuser?\u003c\/strong\u003e\u003cbr\u003eYes. This reducer uses M63×1 threads which you can access on the 3.2\" focuser. \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need a T-ring to connect my camera?\u003c\/strong\u003e\u003cbr\u003eIt depends on your camera. Dedicated CMOS and CCD astronomy cameras (ZWO, QHY, Player One, and similar) typically have 48mm T-threads built in and connect directly to the ATREDT30V2 — no T-ring needed. DSLR and mirrorless cameras (Canon, Nikon, Sony, and others) connect via a T-ring for your specific lens mount. The T-ring is sold separately.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use filters with this reducer?\u003c\/strong\u003e\u003cbr\u003eThe ATREDT30V2 does have the internal filter threads when you thread off the knurled end cap.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat happens if my back focus is off?\u003c\/strong\u003e\u003cbr\u003eYou'll see elongated or distorted stars at the edges of your images — the field correction is optimized for 55mm. Too short and stars stretch one way; too long and they stretch the other. Use T-thread spacers to fine-tune the distance. Measure from the reducer shoulder to your sensor before your first session.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use this with other telescopes?\u003c\/strong\u003e\u003cbr\u003eIt may work with other f\/7 refractors that have a 2.5-inch focuser with M63×1 threads, but we can only confirm performance with the AT130EDT. The optical design is matched to the AT130EDT's focal length and field curvature. Using it with other scopes may produce usable results, but we can't guarantee corner correction.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow does this compare to the 1× field flattener?\u003c\/strong\u003e\u003cbr\u003eThe 1× flattener (AT130EDTFF) corrects field curvature without changing the focal length — you stay at 910mm f\/7. The 0.8× reducer (this product) both flattens the field and shortens the focal length to 728mm f\/5.6. Use the 1× flattener when you want maximum image scale and don't need faster exposures. Use the 0.8× reducer when you want a wider field and shorter exposures. Most AT130EDT imagers end up using the reducer more often.\u003c\/p\u003e\n\u003ch3\u003eFinal Thoughts\u003c\/h3\u003e\n\u003cp\u003eIf you're imaging with an AT130EDT that has the 2.5-inch focuser, the ATREDT30V2 is the reducer that was designed for it. The optical correction is matched to the AT130EDT's triplet, the M63 threading gives you a rigid connection without adapter stacks, and 728mm at f\/5.6 opens up the wide-field deep-sky targets that are cramped at native focal length. It does two things — flattens the field and speeds up the system — and it does both well. Get the back focus right at 55mm, and the corners of your frames will tell you the rest.\u003c\/p\u003e\n\u003ch2\u003eTech Details: \u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background-color: #f0f4f8;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eModel\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003eATREDT30V2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #ffffff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eCompatible Telescope\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003eAT130EDT (2.5\" focuser or 3.2\" focuser)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f0f4f8;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eFocal Reduction\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003e0.8×\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #ffffff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eResulting Focal Length\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003e728mm (from 910mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f0f4f8;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eResulting Focal Ratio\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003ef\/5.6 (from f\/7)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #ffffff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eScope Connection\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003eM63×1 threads (into 2.5\" focuser drawtube or CAA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f0f4f8;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eCamera Connection\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003e48mm T-threads\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #ffffff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eBack Focus\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003e55mm (reducer shoulder to sensor)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f0f4f8;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eCoatings\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003eFully multi-coated, broadband AR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #ffffff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eIncluded Accessories\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003eSlip-on rubber dust covers (scope side and camera side)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Astro-Tech","offers":[{"title":"Default Title","offer_id":40481992769609,"sku":"ATREDT30V2","price":229.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/astronomics_optimized-0053.jpg?v=1675380122"},{"product_id":"astro-tech-0-8x-reducer-field-flattener-for-astro-tech-at102edl-doublet-apo-refractor","title":"Astro-Tech 0.8X Reducer\/Field Flattener For Astro-Tech AT102EDL Doublet Apo Refractor","description":"\u003cp\u003eThe AT102EDL is a versatile doublet APO at 714mm f\/7 — plenty of focal length for mid-range targets and sharp enough for visual work on any given night. But when you attach a camera, the field curvature that's invisible at the eyepiece becomes obvious in your images. Stars that are tight in the center soften into small streaks near the corners. The AT102EDLRF corrects that curvature and reduces the focal length to 571mm f\/5.6 — a 56% increase in photographic speed — so you get flat fields, round stars, and shorter exposures in one piece of glass.\u003c\/p\u003e\n\n\u003ch3\u003eDesigned for One Scope\u003c\/h3\u003e\n\n\u003cp\u003eThis reducer\/flattener is computed specifically for the field curvature of the Astro-Tech AT102EDL 102mm f\/7 doublet APO refractor. A generic 0.8x reducer will shorten the focal length, but it won't match the correction to your scope's specific optical profile. This one does. It may thread into other f\/7 refractors with a 2.5-inch focuser, but optical performance outside the AT102EDL is not guaranteed.\u003c\/p\u003e\n\n\u003ch3\u003eHow It Connects\u003c\/h3\u003e\n\n\u003cp\u003eThe scope side threads into the focuser drawtube using M63×1 metric threads — a solid, repeatable connection with no compression ring and no play. The camera side has standard 48mm T-threads, connecting to a T-ring for DSLR and mirrorless bodies, or directly to dedicated CMOS and CCD astronomy cameras, which come with 48mm T-threads built in.\u003c\/p\u003e\n\n\u003cp\u003eBack focus is 55mm from the shoulder of the reducer to the image plane. That's the standard DSLR spacing — a T-ring and camera body will put you at the correct distance without spacers. For dedicated astronomy cameras, measure your camera's back focus specification and add spacers if needed to reach 55mm.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\n\u003cul\u003e\n  \u003cli\u003eAstro-Tech AT102EDLRF 0.8x reducer\/field flattener\u003c\/li\u003e\n  \u003cli\u003eSlip-on rubber dust cover for 48mm T-threads (camera side)\u003c\/li\u003e\n  \u003cli\u003eSlip-on dust cover for 2\" scope-side barrel\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e0.8x focal reduction\u003c\/strong\u003e — Converts the AT102EDL from 714mm f\/7 to 571mm f\/5.6. That's a 56% increase in photographic speed — the same signal-to-noise ratio in roughly two-thirds the exposure time.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eField flattening\u003c\/strong\u003e — Corrects the native field curvature of the AT102EDL so stars stay round and sharp all the way to the corners of your imaging chip.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFully multi-coated optics\u003c\/strong\u003e — Minimizes reflections and maximizes light transmission through the reducer elements.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eM63×1 scope-side thread\u003c\/strong\u003e — Threads securely into the focuser drawtube. No set screws, no wobble, no shift between sessions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e48mm T-thread camera connection\u003c\/strong\u003e — DSLR and mirrorless bodies connect via a T-ring (sold separately); dedicated CMOS\/CCD astronomy cameras attach directly — 48mm T-threads are standard on most.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e55mm back focus\u003c\/strong\u003e — Standard DSLR spacing. No spacers needed for most DSLR setups. Dedicated astronomy cameras may require spacers to reach the correct distance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact and lightweight\u003c\/strong\u003e — 8 ounces. Adds minimal weight to your imaging train.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eImaging Tip\u003c\/h3\u003e\n\n\u003cp\u003eWhen you first set up the AT102EDLRF, shoot a short test exposure of a star field and inspect the corners at 100% zoom. If stars are elongated radially (pointing away from center), you're too far from the reducer — remove a spacer or check your T-ring stack. If stars are elongated tangentially (perpendicular to the radial direction), you're too close. The 55mm specification is measured from the shoulder of the reducer, not the rear element — make sure you're measuring from the right reference point.\u003c\/p\u003e\n\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eWill this work with my AT125EDL or AT150EDL?\u003c\/strong\u003e\u003cbr\u003e\nNo. Each EDL scope has its own dedicated reducer matched to its specific field curvature. The AT125EDL uses the AT125EDLRF, and the AT150EDL uses the AT150EDLRF. They are not interchangeable.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I use this visually?\u003c\/strong\u003e\u003cbr\u003e\nThe reducer is designed for prime-focus astrophotography. It will not reach focus with an eyepiece and is not intended for visual use.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDo I need a T-ring?\u003c\/strong\u003e\u003cbr\u003e\nDSLR and mirrorless cameras connect via a T-ring for your specific mount (sold separately). Dedicated CMOS and CCD astronomy cameras typically have 48mm T-threads built in and connect directly without a T-ring.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat sensors have been tested with this reducer?\u003c\/strong\u003e\u003cbr\u003e\nOwners report sharp stars to the edges of 4\/3-format sensors (like the ASI-294mc) at the specified 55mm back focus. Results on larger APS-C and full-frame sensors will depend on precise spacing — test and adjust before committing to long integration times.\u003c\/p\u003e\n\n\u003ch3\u003eFinal Thoughts\u003c\/h3\u003e\n\n\u003cp\u003eIf you're imaging through the AT102EDL, this is the reducer that was built for it. It flattens the field, speeds the system to f\/5.6, and threads in with a secure M63 connection that holds position between sessions. At 8 ounces, it barely changes the balance of your imaging train. The AT102EDL is already one of the most capable doublets in its aperture class — the AT102EDLRF turns it into a proper imaging platform with flat fields and faster exposures.\u003c\/p\u003e\n\n\u003ch2\u003eTech Details:\u003c\/h2\u003e\n\u003ctable style=\"width:100%; border-collapse: collapse;\"\u003e\u003ctbody\u003e\n\u003ctr style=\"background-color: #f0f4f8;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eReduction Factor\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003e0.8x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #ffffff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eDesigned For\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003eAstro-Tech AT102EDL 102mm f\/7 Doublet APO Refractor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f0f4f8;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eNative Focal Length\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003e714mm f\/7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #ffffff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eResulting Focal Length\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003e571mm f\/5.6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f0f4f8;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eCoatings\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003eFully multi-coated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #ffffff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eScope-Side Connection\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003eM63×1 metric thread (focuser drawtube)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f0f4f8;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eCamera-Side Connection\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003e48mm T-threads\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #ffffff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eBack Focus\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003e55mm (from shoulder of reducer to image plane)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f0f4f8;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003ePhotographic Speed Increase\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003e56% (f\/7 to f\/5.6)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #ffffff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003e8 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f0f4f8;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eIncluded\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003eReducer\/flattener, T-thread dust cover, scope-side dust cover\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #ffffff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eWarranty\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003e1 year\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"Astro-Tech","offers":[{"title":"Default Title","offer_id":40481994244169,"sku":"AT102EDLRF","price":199.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/files\/0.8XReducer_Flattener_1-10522.jpg?v=1714680170"},{"product_id":"astro-tech-0-8x-reducer-field-flattener-for-astro-tech-at125edl-doublet-apo-refractor","title":"Astro-Tech 0.8X Reducer\/Field Flattener For Astro-Tech AT125EDL Doublet APO Refractor","description":"\u003cp\u003eThe AT125EDL is a serious visual scope at 975mm f\/7.8, but when you turn it toward astrophotography, two things work against you: the curved field stretches stars into small comets near the corners of your sensor, and the slow focal ratio means longer exposures to capture the same depth of signal. The AT125EDLRF fixes both. It reduces the focal length to 780mm, speeding the system to f\/6.2 — a 56% increase in photographic speed — and flattens the field so stars stay round and tight from center to edge.\u003c\/p\u003e\n\n\u003ch3\u003eDesigned for One Scope\u003c\/h3\u003e\n\n\u003cp\u003eThis reducer\/flattener is not a universal accessory. It's computed and optimized for the field curvature profile of the Astro-Tech AT125EDL 125mm f\/7.8 doublet APO refractor. A generic 0.8x reducer can shorten focal length, but it won't correct the specific curvature of your scope. This one does. It may thread into other f\/7.8 refractors with a 2.5-inch focuser, but optical performance is only guaranteed with the AT125EDL.\u003c\/p\u003e\n\n\u003ch3\u003eHow It Connects\u003c\/h3\u003e\n\n\u003cp\u003eThe scope side threads into the focuser drawtube or the camera angle adjuster (CAA) using M63×1 metric threads — a secure, repeatable connection with no set screws and no wobble. The camera side has standard 48mm T-threads, connecting to a T-ring for DSLR and mirrorless bodies, or directly to dedicated CMOS and CCD astronomy cameras, which come with 48mm T-threads built in.\u003c\/p\u003e\n\n\u003cp\u003eBack focus is 55mm from the shoulder of the reducer to the image plane. That's the standard DSLR spacing — a T-ring and camera body will put you at the correct distance without spacers. For dedicated astronomy cameras, measure your camera's back focus and add spacers if needed to reach 55mm.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\n\u003cul\u003e\n  \u003cli\u003eAstro-Tech AT125EDLRF 0.8x reducer\/field flattener\u003c\/li\u003e\n  \u003cli\u003eSlip-on rubber dust cover for 48mm T-threads (camera side)\u003c\/li\u003e\n  \u003cli\u003eSlip-on dust cover for 2\" scope-side barrel\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e0.8x focal reduction\u003c\/strong\u003e — Converts the AT125EDL from 975mm f\/7.8 to 780mm f\/6.2. That's a 56% increase in photographic speed — the same target reaches the same signal-to-noise ratio in roughly two-thirds the exposure time.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eField flattening\u003c\/strong\u003e — Corrects the native field curvature of the AT125EDL so stars are round and sharp all the way to the corners of your imaging chip.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFully multi-coated optics\u003c\/strong\u003e — Minimizes reflections and maximizes light transmission through the reducer elements.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eM63×1 scope-side thread\u003c\/strong\u003e — Threads securely into the focuser drawtube or camera angle adjuster. No compression ring, no wobble, no shift between sessions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e48mm T-thread camera connection\u003c\/strong\u003e — DSLR and mirrorless bodies connect via a T-ring (sold separately); dedicated CMOS\/CCD astronomy cameras attach directly — 48mm T-threads are standard on most.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e55mm back focus\u003c\/strong\u003e — Standard DSLR spacing. No spacers needed for most DSLR setups. Dedicated astronomy cameras may require spacers to reach the correct distance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact and lightweight\u003c\/strong\u003e — 8 ounces. Adds minimal weight to your imaging train.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eImaging Tip\u003c\/h3\u003e\n\n\u003cp\u003eWhen you first set up the AT125EDLRF, shoot a short test exposure of a star field and inspect the corners at 100% zoom. If stars are elongated radially (pointing away from center), you're too far from the reducer — remove a spacer or check your T-ring stack. If stars are elongated tangentially (perpendicular to the radial direction), you're too close. The 55mm specification is measured from the shoulder of the reducer, not the rear element — make sure you're measuring from the right point.\u003c\/p\u003e\n\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eWill this work with my AT102EDL or AT150EDL?\u003c\/strong\u003e\u003cbr\u003e\nNo. Each EDL scope has its own dedicated reducer matched to its specific field curvature. The AT102EDL uses the AT102EDLRF, and the AT150EDL uses the AT150EDLRF. They are not interchangeable.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I use this visually?\u003c\/strong\u003e\u003cbr\u003e\nThe reducer is designed for prime-focus astrophotography. It will not reach focus with an eyepiece and is not intended for visual use.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDo I need a T-ring?\u003c\/strong\u003e\u003cbr\u003e\nDSLR and mirrorless cameras connect via a T-ring for your specific mount (sold separately). Dedicated CMOS and CCD astronomy cameras typically have 48mm T-threads built in and connect directly without a T-ring.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat if I need to use a filter?\u003c\/strong\u003e\u003cbr\u003e\nYou can place a 48mm (2\") threaded filter between the reducer and the camera. Be aware that adding a filter changes your back focus distance — account for the filter thickness when calculating your total spacing.\u003c\/p\u003e\n\n\u003ch3\u003eFinal Thoughts\u003c\/h3\u003e\n\n\u003cp\u003eIf you're imaging through the AT125EDL, this is the reducer that was designed for it. It flattens the field, speeds the system to f\/6.2, and threads in with a secure M63 connection that doesn't shift between sessions. At 8 ounces, it adds almost nothing to your imaging train. The result is sharper corners, shorter exposures, and a wider field — exactly what the AT125EDL needs to go from a visual scope that happens to image to a proper astrophotography platform.\u003c\/p\u003e\n\n\u003ch2\u003eTech Details:\u003c\/h2\u003e\n\u003ctable style=\"width:100%; border-collapse: collapse;\"\u003e\u003ctbody\u003e\n\u003ctr style=\"background-color: #f0f4f8;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eReduction Factor\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003e0.8x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #ffffff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eDesigned For\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003eAstro-Tech AT125EDL 125mm f\/7.8 Doublet APO Refractor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f0f4f8;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eNative Focal Length\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003e975mm f\/7.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #ffffff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eResulting Focal Length\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003e780mm f\/6.2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f0f4f8;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eCoatings\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003eFully multi-coated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #ffffff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eScope-Side Connection\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003eM63×1 metric thread (focuser drawtube or CAA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f0f4f8;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eCamera-Side Connection\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003e48mm T-threads\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #ffffff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eBack Focus\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003e55mm (from shoulder of reducer to image plane)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f0f4f8;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003ePhotographic Speed Increase\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003e56% (f\/7.8 to f\/6.2)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #ffffff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003e8 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f0f4f8;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eIncluded\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003eReducer\/flattener, T-thread dust cover, scope-side dust cover\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #ffffff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eWarranty\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003e1 year\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"Astro-Tech","offers":[{"title":"Default Title","offer_id":40481994276937,"sku":"AT125EDLRF","price":199.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/files\/0.8XReducer_Flattener_1-10522_3885e071-8109-44bc-8473-2f2480333cd7.jpg?v=1714677371"},{"product_id":"zwo-efw-5-position-filter-wheel-for-2","title":"ZWO EFW 5-Position Filter Wheel For 2\" Filters","description":"\u003ch2 data-start=\"72\" data-end=\"151\"\u003eZWO EFW 5x2 Filter Wheel – Precision and Efficiency for Your Imaging Setup\u003c\/h2\u003e\n\u003cp data-start=\"153\" data-end=\"542\"\u003eIf you're looking to streamline your astrophotography workflow, the \u003cstrong data-start=\"221\" data-end=\"236\"\u003eZWO EFW 5x2\u003c\/strong\u003e electronic filter wheel is an excellent addition to your imaging rig. Designed for both seasoned astrophotographers and those just venturing into multi-filter imaging, this compact and lightweight filter wheel ensures quick, precise, and automated filter changes without disrupting your imaging session.\u003c\/p\u003e\n\u003ch3 data-start=\"544\" data-end=\"585\"\u003eBuilt for Performance and Precision\u003c\/h3\u003e\n\u003cp data-start=\"587\" data-end=\"1098\"\u003eAt the heart of the \u003cstrong data-start=\"607\" data-end=\"622\"\u003eZWO EFW 5x2\u003c\/strong\u003e, you’ll find a \u003cstrong data-start=\"638\" data-end=\"668\"\u003ehigh-quality stepper motor\u003c\/strong\u003e that delivers smooth and reliable movement between filters. This motor, sourced from the renowned Japanese manufacturer NPM, provides exceptional precision, ensuring that each filter transitions seamlessly into place. Whether you're capturing detailed \u003cstrong data-start=\"921\" data-end=\"942\"\u003enarrowband images\u003c\/strong\u003e or working with a full \u003cstrong data-start=\"966\" data-end=\"985\"\u003eLRGB filter set\u003c\/strong\u003e, this filter wheel operates with minimal vibration, reducing the risk of image shifts or optical misalignment.\u003c\/p\u003e\n\u003ch3 data-start=\"1100\" data-end=\"1160\"\u003eCompact and Lightweight – A Perfect Fit for Your Setup\u003c\/h3\u003e\n\u003cp data-start=\"1162\" data-end=\"1649\"\u003eOne of the standout features of the \u003cstrong data-start=\"1198\" data-end=\"1213\"\u003eZWO EFW 5x2\u003c\/strong\u003e is its \u003cstrong data-start=\"1221\" data-end=\"1253\"\u003elightweight aluminum housing\u003c\/strong\u003e, which is both durable and resistant to environmental wear. At just \u003cstrong data-start=\"1322\" data-end=\"1350\"\u003e10.58 ounces (300 grams)\u003c\/strong\u003e, it adds negligible weight to your imaging train, making it an excellent choice for those who prioritize a portable or remotely operated setup. The \u003cstrong data-start=\"1499\" data-end=\"1520\"\u003e20mm thin profile\u003c\/strong\u003eensures that backfocus considerations are minimal, allowing for easy integration with ZWO cameras and other imaging equipment.\u003c\/p\u003e\n\u003ch3 data-start=\"1651\" data-end=\"1700\"\u003e2-Inch Filters for Maximum Light Collection\u003c\/h3\u003e\n\u003cp data-start=\"1702\" data-end=\"2216\"\u003eDesigned to hold up to \u003cstrong data-start=\"1725\" data-end=\"1765\"\u003efive 2-inch (50mm unmounted) filters\u003c\/strong\u003e, the \u003cstrong data-start=\"1771\" data-end=\"1786\"\u003eZWO EFW 5x2\u003c\/strong\u003e allows astrophotographers to maximize their light collection and minimize vignetting. This is particularly important when using larger sensor cameras, as full-frame and APS-C sensors benefit significantly from the increased aperture of 2-inch filters. Whether you’re shooting deep-space nebulae, galaxies, or planetary targets, the ability to switch between filters electronically saves time and enhances your imaging workflow.\u003c\/p\u003e\n\u003ch3 data-start=\"2218\" data-end=\"2273\"\u003eSeamless Integration with ASCOM and ZWO Ecosystem\u003c\/h3\u003e\n\u003cp data-start=\"2275\" data-end=\"2709\"\u003eZWO designed the \u003cstrong data-start=\"2292\" data-end=\"2303\"\u003eEFW 5x2\u003c\/strong\u003e for effortless compatibility with its \u003cstrong data-start=\"2342\" data-end=\"2357\"\u003eASI cameras\u003c\/strong\u003e, particularly those with \u003cstrong data-start=\"2383\" data-end=\"2417\"\u003eM42 and M54 thread connections\u003c\/strong\u003e. The filter wheel connects directly via \u003cstrong data-start=\"2458\" data-end=\"2469\"\u003eUSB 2.0\u003c\/strong\u003e, drawing power directly from your imaging computer without the need for external power sources. It is fully \u003cstrong data-start=\"2578\" data-end=\"2598\"\u003eASCOM-compatible\u003c\/strong\u003e, making it easy to integrate into automation software such as \u003cstrong data-start=\"2661\" data-end=\"2706\"\u003eSequence Generator Pro, NINA, or SharpCap\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3 data-start=\"2711\" data-end=\"2753\"\u003eFast, Quiet, and Efficient Operation\u003c\/h3\u003e\n\u003cp data-start=\"2755\" data-end=\"3167\"\u003eThe \u003cstrong data-start=\"2759\" data-end=\"2774\"\u003eZWO EFW 5x2\u003c\/strong\u003e can complete a filter change in just a few seconds, allowing you to capture different wavelengths without manually handling your imaging train. This not only improves efficiency but also reduces the risk of introducing dust or debris onto your filters or sensor. The wheel’s \u003cstrong data-start=\"3050\" data-end=\"3069\"\u003equiet operation\u003c\/strong\u003e ensures that it won’t interfere with observatory environments where noise levels are a concern.\u003c\/p\u003e\n\u003ch3 data-start=\"3169\" data-end=\"3229\"\u003eIdeal for Narrowband, LRGB, and Multi-Spectral Imaging\u003c\/h3\u003e\n\u003cp data-start=\"3231\" data-end=\"3610\"\u003eWhether you're imaging in \u003cstrong data-start=\"3257\" data-end=\"3278\"\u003eHa, OIII, and SII\u003c\/strong\u003e for deep-sky narrowband projects or working with \u003cstrong data-start=\"3328\" data-end=\"3336\"\u003eLRGB\u003c\/strong\u003e for true-color astrophotography, the \u003cstrong data-start=\"3374\" data-end=\"3389\"\u003eZWO EFW 5x2\u003c\/strong\u003e gives you the flexibility to capture the universe in stunning detail. The smooth rotation and precise alignment ensure that every filter lands exactly where it needs to be, reducing the need for frequent recalibration.\u003c\/p\u003e\n\u003ch3 data-start=\"3612\" data-end=\"3672\"\u003eThe Perfect Companion for Dedicated Astrophotographers\u003c\/h3\u003e\n\u003cp data-start=\"3674\" data-end=\"4145\"\u003eThe \u003cstrong data-start=\"3678\" data-end=\"3693\"\u003eZWO EFW 5x2\u003c\/strong\u003e filter wheel is an indispensable tool for those who demand precision, reliability, and ease of use. Its \u003cstrong data-start=\"3798\" data-end=\"3867\"\u003esturdy build, seamless software integration, and optimized design\u003c\/strong\u003e make it a top choice for astrophotographers looking to enhance their workflow with effortless filter changes. Whether you're imaging from a backyard observatory or a dark sky site, this filter wheel is built to deliver \u003cstrong data-start=\"4087\" data-end=\"4123\"\u003econsistent, high-quality results\u003c\/strong\u003e with every session.\u003c\/p\u003e\n\u003chr data-start=\"4147\" data-end=\"4150\"\u003e\n\u003ch3 data-start=\"4152\" data-end=\"4183\"\u003eTechnical Specifications:\u003c\/h3\u003e\n\u003cul data-start=\"4184\" data-end=\"4593\"\u003e\n\u003cli data-start=\"4184\" data-end=\"4244\"\u003e\n\u003cstrong data-start=\"4186\" data-end=\"4206\"\u003eFilter Capacity:\u003c\/strong\u003e 5 x 2-inch (50mm unmounted) filters\u003c\/li\u003e\n\u003cli data-start=\"4245\" data-end=\"4281\"\u003e\n\u003cstrong data-start=\"4247\" data-end=\"4258\"\u003eWeight:\u003c\/strong\u003e ~10.58 ounces (300g)\u003c\/li\u003e\n\u003cli data-start=\"4282\" data-end=\"4305\"\u003e\n\u003cstrong data-start=\"4284\" data-end=\"4298\"\u003eThickness:\u003c\/strong\u003e 20mm\u003c\/li\u003e\n\u003cli data-start=\"4306\" data-end=\"4353\"\u003e\n\u003cstrong data-start=\"4308\" data-end=\"4321\"\u003eMaterial:\u003c\/strong\u003e CNC-machined aluminum housing\u003c\/li\u003e\n\u003cli data-start=\"4354\" data-end=\"4395\"\u003e\n\u003cstrong data-start=\"4356\" data-end=\"4366\"\u003eMotor:\u003c\/strong\u003e Japanese NPM stepper motor\u003c\/li\u003e\n\u003cli data-start=\"4396\" data-end=\"4443\"\u003e\n\u003cstrong data-start=\"4398\" data-end=\"4415\"\u003eConnectivity:\u003c\/strong\u003e USB 2.0, ASCOM-compatible\u003c\/li\u003e\n\u003cli data-start=\"4444\" data-end=\"4507\"\u003e\n\u003cstrong data-start=\"4446\" data-end=\"4469\"\u003eRotation Direction:\u003c\/strong\u003e Both clockwise and counterclockwise\u003c\/li\u003e\n\u003cli data-start=\"4508\" data-end=\"4593\"\u003e\n\u003cstrong data-start=\"4510\" data-end=\"4528\"\u003eCompatibility:\u003c\/strong\u003e Works seamlessly with ZWO ASI cameras, M42 and M54 connections\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"4595\" data-end=\"4889\"\u003eIf you're ready to take your imaging to the next level, the \u003cstrong data-start=\"4655\" data-end=\"4670\"\u003eZWO EFW 5x2\u003c\/strong\u003e filter wheel is a worthy addition to your astrophotography arsenal. Pair it with a high-quality \u003cstrong data-start=\"4767\" data-end=\"4815\"\u003eZWO monochrome camera and premium filter set\u003c\/strong\u003e, and you'll unlock a whole new level of detail in your deep-sky images.\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\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e14 ounces\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e2 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":40481995522121,"sku":"EFW5","price":299.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/products\/efw2-1.jpg?v=1675380301"},{"product_id":"zwo-efw-7-position-filter-wheel-for-2","title":"ZWO EFW 7-Position Filter Wheel for 2\"","description":"\u003ch3 data-end=\"226\" data-start=\"131\"\u003e\u003cstrong data-end=\"224\" data-start=\"135\"\u003eZWO EFW 7x2\" Filter Wheel – Precision and Convenience for Your Astrophotography Setup\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-end=\"584\" data-start=\"228\"\u003eWhen it comes to deep-sky astrophotography, every detail counts. The \u003cstrong data-end=\"337\" data-start=\"297\"\u003eZWO EFW 7x2\" electronic filter wheel\u003c\/strong\u003e is a game-changer for astrophotographers using larger format monochrome cameras. Designed for reliability, precision, and ease of use, this seven-position filter wheel offers seamless automation, making your imaging sessions smoother than ever.\u003c\/p\u003e\n\u003ch4 data-end=\"625\" data-start=\"586\"\u003e\u003cstrong data-end=\"623\" data-start=\"591\"\u003eWhy Choose the ZWO EFW 7x2\"?\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp data-end=\"969\" data-start=\"627\"\u003e\u003cstrong data-end=\"677\" data-start=\"627\"\u003eHolds Seven 2\" Filters for Maximum Versatility\u003c\/strong\u003e\u003cbr data-end=\"680\" data-start=\"677\"\u003eWith space for seven 2” mounted filters (M48 thread, \u0026lt;7mm thickness), this filter wheel allows for an expanded range of imaging possibilities. Whether you're shooting LRGB, narrowband, or specialty photometric filters, you won’t need to swap them out manually in the middle of the night.\u003c\/p\u003e\n\u003cp data-end=\"1273\" data-start=\"971\"\u003e\u003cstrong data-end=\"1011\" data-start=\"971\"\u003eUltra-Slim, Lightweight, and Durable\u003c\/strong\u003e\u003cbr data-end=\"1014\" data-start=\"1011\"\u003eConstructed from CNC-machined aluminum, the ZWO EFW 7x2\" is both lightweight and incredibly sturdy. At just 20mm thick, it keeps your imaging train compact while ensuring optimal weight distribution, making it a perfect fit for setups where balance matters.\u003c\/p\u003e\n\u003cp data-end=\"1590\" data-start=\"1275\"\u003e\u003cstrong data-end=\"1344\" data-start=\"1275\"\u003eHigh-Precision Stepper Motor for Fast and Accurate Filter Changes\u003c\/strong\u003e\u003cbr data-end=\"1347\" data-start=\"1344\"\u003eZWO equips this filter wheel with a \u003cstrong data-end=\"1415\" data-start=\"1383\"\u003eNPM stepper motor from Japan\u003c\/strong\u003e, known for its precision and reliability. Filter changes are smooth, fast, and accurate, allowing you to switch filters in seconds without disturbing your framing or focus.\u003c\/p\u003e\n\u003cp data-end=\"1980\" data-start=\"1592\"\u003e\u003cstrong data-end=\"1635\" data-start=\"1592\"\u003eUSB-Controlled for Seamless Integration\u003c\/strong\u003e\u003cbr data-end=\"1638\" data-start=\"1635\"\u003ePowered and controlled via USB 2.0, the ZWO EFW integrates effortlessly with most popular astrophotography software, including ASCOM-compatible programs like Sequence Generator Pro and NINA. Simply connect it to your computer, and the software handles filter changes automatically. No need for an additional power supply—just plug and play.\u003c\/p\u003e\n\u003cp data-end=\"2304\" data-start=\"1982\"\u003e\u003cstrong data-end=\"2013\" data-start=\"1982\"\u003eDesigned for Larger Sensors\u003c\/strong\u003e\u003cbr data-end=\"2016\" data-start=\"2013\"\u003eLarger format sensors demand larger filters to avoid vignetting, and the 2” filter size ensures full-frame and APS-C sensors get the clear, unobstructed light they need. \u003c\/p\u003e\n\u003cp data-end=\"2605\" data-start=\"2306\"\u003e\u003cstrong data-end=\"2357\" data-start=\"2306\"\u003eWhisper-Quiet Operation with Minimal Power Draw\u003c\/strong\u003e\u003cbr data-end=\"2360\" data-start=\"2357\"\u003eThe internal motor operates with virtually no noise, keeping your imaging sessions peaceful and free from unnecessary distractions. Plus, the low power consumption means you won’t be draining your power supply when running in remote locations.\u003c\/p\u003e\n\u003ch4 data-end=\"2653\" data-start=\"2607\"\u003e\u003cstrong data-end=\"2651\" data-start=\"2612\"\u003eEasy Installation and Compatibility\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp data-end=\"2956\" data-start=\"2654\"\u003eMounting the ZWO EFW 7x2\" to your imaging train is hassle-free. It features a \u003cstrong data-end=\"2755\" data-start=\"2732\"\u003estandard M54 thread\u003c\/strong\u003e on both sides, ensuring compatibility with a wide range of cameras, filter drawers, and telescopes. Pair it with the ZWO OAG-L for a perfectly matched system designed for serious astrophotographers.\u003c\/p\u003e\n\u003ch4 data-end=\"3006\" data-start=\"2958\"\u003e\u003cstrong data-end=\"3004\" data-start=\"2963\"\u003ePerfect for Advanced Astrophotography\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp data-end=\"3325\" data-start=\"3007\"\u003eIf you're looking for a high-capacity, motorized filter wheel that seamlessly integrates with your astrophotography workflow, the \u003cstrong data-end=\"3153\" data-start=\"3137\"\u003eZWO EFW 7x2\"\u003c\/strong\u003e is a solid investment. Its \u003cstrong data-end=\"3246\" data-start=\"3181\"\u003erobust build, smooth operation, and ultra-precise performance\u003c\/strong\u003e make it an ideal choice for capturing professional-quality images with ease.\u003c\/p\u003e\n\u003cp data-end=\"3509\" data-start=\"3327\"\u003eUpgrade your astrophotography rig today with the \u003cstrong data-end=\"3405\" data-start=\"3376\"\u003eZWO EFW 7x2\" filter wheel\u003c\/strong\u003e and take full advantage of the power of monochrome imaging without the hassle of manual filter swaps.\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\"\u003e2 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":40562098569289,"sku":"EFW7","price":399.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/files\/efw2-1_3.jpg?v=1690180768"},{"product_id":"zwo-filter-drawer-m54","title":"ZWO Filter Drawer M54","description":"\u003ch2 data-start=\"146\" data-end=\"241\"\u003eZWO FD M54 II Filter Drawer – Precision and Convenience for Your Astrophotography Workflow\u003c\/h2\u003e\n\u003cp data-start=\"243\" data-end=\"574\"\u003eThe \u003cstrong data-start=\"247\" data-end=\"278\"\u003eZWO FD M54 II Filter Drawer\u003c\/strong\u003e is designed to make swapping filters in your imaging setup as seamless as possible. Whether you’re working with broadband filters for galaxies or narrowband filters for nebulae, this filter drawer provides a secure, precisely machined solution to keep your optical train aligned and dust-free.\u003c\/p\u003e\n\u003cp data-start=\"576\" data-end=\"1022\"\u003eZWO has refined this latest version of their filter drawer system, improving stability, usability, and compatibility. With a full M54 thread on both sides, it integrates smoothly into imaging rigs using larger format sensors that demand a wider clear aperture for unvignetted performance. If you’re shooting with a dedicated astrophotography camera like the ASI2600MC Pro, ASI6200MM Pro, or ASI2400MC Pro, this filter drawer is an ideal choice.\u003c\/p\u003e\n\u003ch3 data-start=\"1024\" data-end=\"1069\"\u003eThoughtful Design for Maximum Stability\u003c\/h3\u003e\n\u003cp data-start=\"1071\" data-end=\"1490\"\u003eOne of the biggest challenges when swapping filters mid-session is maintaining perfect tilt alignment. The \u003cstrong data-start=\"1178\" data-end=\"1205\"\u003eFD M54 II Filter Drawer\u003c\/strong\u003e tackles this issue with a precisely machined aluminum body and an improved locking mechanism that ensures your filter sits flush every time. The built-in strong magnet system holds filters securely, eliminating any chance of shifting that could lead to tilt-induced star distortion.\u003c\/p\u003e\n\u003cp data-start=\"1492\" data-end=\"1817\"\u003eAnother improvement in this version is the \u003cstrong data-start=\"1535\" data-end=\"1561\"\u003eanti-light-leak design\u003c\/strong\u003e. Traditional filter holders sometimes allow stray light to sneak into the optical path, especially in long-exposure deep-sky imaging. The FD M54 II features enhanced light-sealing properties to keep your images free from unwanted reflections and flares.\u003c\/p\u003e\n\u003ch3 data-start=\"1819\" data-end=\"1862\"\u003eCompatibility with 2” Mounted Filters\u003c\/h3\u003e\n\u003cp data-start=\"1864\" data-end=\"2348\"\u003eThis filter drawer is specifically designed for \u003cstrong data-start=\"1912\" data-end=\"1934\"\u003e2” mounted filters\u003c\/strong\u003e, one of the most common formats for deep-sky astrophotography. The included filter holder features a standard M48 thread, ensuring compatibility with virtually all major filter brands, including Baader, Astronomik, Chroma, and Optolong. If you’re running a mono camera and need to swap LRGB or SHO filters without the complexity of a full electronic filter wheel, this filter drawer is an excellent alternative.\u003c\/p\u003e\n\u003ch3 data-start=\"2350\" data-end=\"2405\"\u003eEasy Integration with M54 Threaded Optical Trains\u003c\/h3\u003e\n\u003cp data-start=\"2407\" data-end=\"2811\"\u003eMany larger-format astrophotography cameras feature M54 connections, making this filter drawer a natural fit. It threads directly into systems using M54 connections on both sides, reducing the need for additional adapters and preserving back focus requirements. The low-profile design ensures that you maintain as much light path efficiency as possible, critical for setups with specific spacing needs.\u003c\/p\u003e\n\u003cp data-start=\"2813\" data-end=\"3038\"\u003eIf you’re pairing this filter drawer with ZWO’s \u003cstrong data-start=\"2861\" data-end=\"2886\"\u003eOAG-L off-axis guider\u003c\/strong\u003e, you’ll appreciate how well the two components work together, allowing for a compact, highly integrated imaging train without unnecessary complexity.\u003c\/p\u003e\n\u003ch3 data-start=\"3040\" data-end=\"3064\"\u003eKey Specifications\u003c\/h3\u003e\n\u003cul data-start=\"3066\" data-end=\"3423\"\u003e\n\u003cli data-start=\"3066\" data-end=\"3129\"\u003e\n\u003cstrong data-start=\"3068\" data-end=\"3093\"\u003eFilter Compatibility:\u003c\/strong\u003e 2” (M48-threaded) mounted filters\u003c\/li\u003e\n\u003cli data-start=\"3130\" data-end=\"3179\"\u003e\n\u003cstrong data-start=\"3132\" data-end=\"3152\"\u003eConnection Type:\u003c\/strong\u003e M54 thread on both sides\u003c\/li\u003e\n\u003cli data-start=\"3180\" data-end=\"3246\"\u003e\n\u003cstrong data-start=\"3182\" data-end=\"3195\"\u003eMaterial:\u003c\/strong\u003e CNC-machined aluminum with black anodized finish\u003c\/li\u003e\n\u003cli data-start=\"3247\" data-end=\"3305\"\u003e\n\u003cstrong data-start=\"3249\" data-end=\"3271\"\u003eHolding Mechanism:\u003c\/strong\u003e Magnetic system with secure fit\u003c\/li\u003e\n\u003cli data-start=\"3306\" data-end=\"3360\"\u003e\n\u003cstrong data-start=\"3308\" data-end=\"3326\"\u003eLight Sealing:\u003c\/strong\u003e Enhanced anti-light-leak design\u003c\/li\u003e\n\u003cli data-start=\"3361\" data-end=\"3423\"\u003e\n\u003cstrong data-start=\"3363\" data-end=\"3377\"\u003eThickness:\u003c\/strong\u003e Low-profile design for optimized back focus\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"3425\" data-end=\"3474\"\u003eWhy Choose the ZWO FD M54 II Filter Drawer?\u003c\/h3\u003e\n\u003cul data-start=\"3476\" data-end=\"3829\"\u003e\n\u003cli data-start=\"3476\" data-end=\"3541\"\u003e\n\u003cstrong data-start=\"3478\" data-end=\"3509\"\u003eQuick and easy filter swaps\u003c\/strong\u003e without disrupting your setup\u003c\/li\u003e\n\u003cli data-start=\"3542\" data-end=\"3607\"\u003e\n\u003cstrong data-start=\"3544\" data-end=\"3570\"\u003eEliminates filter tilt\u003c\/strong\u003e with precise mechanical tolerances\u003c\/li\u003e\n\u003cli data-start=\"3608\" data-end=\"3670\"\u003e\n\u003cstrong data-start=\"3610\" data-end=\"3632\"\u003eFull M54 threading\u003c\/strong\u003e for unvignetted optical performance\u003c\/li\u003e\n\u003cli data-start=\"3671\" data-end=\"3755\"\u003e\n\u003cstrong data-start=\"3673\" data-end=\"3717\"\u003eCompatible with large-format ZWO cameras\u003c\/strong\u003e like the ASI6200 and ASI2600 series\u003c\/li\u003e\n\u003cli data-start=\"3756\" data-end=\"3829\"\u003e\n\u003cstrong data-start=\"3758\" data-end=\"3804\"\u003eDurable, lightweight aluminum construction\u003c\/strong\u003e built for years of use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"3831\" data-end=\"4154\"\u003eFor astrophotographers who need a rock-solid, high-precision filter drawer with \u003cstrong data-start=\"3911\" data-end=\"3959\"\u003elarge sensor support and fast filter changes\u003c\/strong\u003e, the \u003cstrong data-start=\"3965\" data-end=\"3982\"\u003eZWO FD M54 II\u003c\/strong\u003e is an outstanding choice. Whether you’re imaging galaxies, nebulae, or planetary details, this filter drawer delivers the performance and reliability your setup demands.\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\"\u003e2 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":40562099191881,"sku":"ZWOFD54","price":79.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/files\/fd-m54.jpg?v=1690181324"},{"product_id":"zwo-five-position-efw-mini-filter-wheel-1-25-and-31mm","title":"ZWO Five Position EFW Mini Filter Wheel 1.25\" and 31mm","description":"\u003ch2 data-start=\"134\" data-end=\"225\"\u003e\n\u003cstrong data-start=\"137\" data-end=\"177\"\u003eZWO EFW Mini 5-Position Filter Wheel\u003c\/strong\u003e – Compact, Reliable, and Precision Engineered\u003c\/h2\u003e\n\u003cp data-start=\"227\" data-end=\"618\"\u003eIf you’re looking to streamline your astrophotography workflow with an automated filter system, the \u003cstrong data-start=\"327\" data-end=\"343\"\u003eZWO EFW Mini\u003c\/strong\u003e 5-position filter wheel is a game-changer. Designed for precision, efficiency, and portability, this electronically controlled filter wheel makes switching between LRGB or narrowband filters effortless, ensuring that every frame is captured without unwanted interruptions.\u003c\/p\u003e\n\u003ch3 data-start=\"620\" data-end=\"650\"\u003e\u003cstrong data-start=\"624\" data-end=\"648\"\u003eCompact Yet Powerful\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"651\" data-end=\"1066\"\u003eWeighing in at only 300 grams, the ZWO EFW Mini is incredibly lightweight, making it an excellent choice for setups where weight distribution is crucial. Despite its compact form factor, it boasts a \u003cstrong data-start=\"850\" data-end=\"869\"\u003efully motorized\u003c\/strong\u003e design powered through a simple USB connection—no need for additional power supplies or messy cable management. It integrates seamlessly with your imaging rig, keeping things neat and efficient.\u003c\/p\u003e\n\u003ch3 data-start=\"1068\" data-end=\"1124\"\u003e\u003cstrong data-start=\"1072\" data-end=\"1122\"\u003ePrecision Engineering for Flawless Performance\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"1125\" data-end=\"1585\"\u003eThe ZWO EFW Mini houses a \u003cstrong data-start=\"1151\" data-end=\"1253\"\u003ehigh-torque stepper motor from NPM, a trusted Japanese manufacturer known for precision mechanics.\u003c\/strong\u003e The motor ensures smooth, repeatable, and reliable filter changes, minimizing flexure and ensuring your optical train remains stable throughout long imaging sessions. With a filter-changing time of just a few seconds, you can shift between filters with confidence, knowing the wheel won’t introduce unwanted vibrations or delays.\u003c\/p\u003e\n\u003ch3 data-start=\"1587\" data-end=\"1643\"\u003e\u003cstrong data-start=\"1591\" data-end=\"1641\"\u003eOptimized for 1.25\" and 31mm Unmounted Filters\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"1644\" data-end=\"2025\"\u003eThe five-position carousel is designed to accommodate \u003cstrong data-start=\"1698\" data-end=\"1724\"\u003e1.25\" threaded filters\u003c\/strong\u003e or \u003cstrong data-start=\"1728\" data-end=\"1754\"\u003e31mm unmounted filters\u003c\/strong\u003e. Whether you're using LRGB for color imaging or narrowband filters to capture faint nebulae, the EFW Mini provides excellent compatibility. The 31mm unmounted filters are secured with included locking screws and rubber rings, ensuring that they remain firmly in place.\u003c\/p\u003e\n\u003ch3 data-start=\"2027\" data-end=\"2083\"\u003e\u003cstrong data-start=\"2031\" data-end=\"2081\"\u003eUltra-Slim Design for Minimal Backfocus Impact\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"2084\" data-end=\"2492\"\u003eAt only \u003cstrong data-start=\"2092\" data-end=\"2106\"\u003e20mm thick\u003c\/strong\u003e, the ZWO EFW Mini is one of the thinnest motorized filter wheels available. This slim profile minimizes the impact on your backfocus, making it an excellent choice for astrophotographers using fast optical systems or setups with limited backfocus tolerance. With ZWO cameras and accessories, the filter wheel integrates seamlessly to maintain a \u003cstrong data-start=\"2452\" data-end=\"2490\"\u003eprecisely calibrated optical path.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3 data-start=\"2494\" data-end=\"2546\"\u003e\u003cstrong data-start=\"2498\" data-end=\"2544\"\u003eSeamless USB Control \u0026amp; ASCOM Compatibility\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"2547\" data-end=\"2989\"\u003eDesigned for plug-and-play operation, the ZWO EFW Mini is powered and controlled via a single \u003cstrong data-start=\"2641\" data-end=\"2658\"\u003eUSB 2.0 cable\u003c\/strong\u003e, which connects directly to your imaging computer or ZWO ASI cameras with a built-in USB hub. The filter wheel is \u003cstrong data-start=\"2773\" data-end=\"2838\"\u003efully compatible with ASCOM drivers and ZWO’s native software\u003c\/strong\u003e, allowing for smooth automation and filter sequencing through imaging applications like \u003cstrong data-start=\"2927\" data-end=\"2987\"\u003eSequence Generator Pro, NINA, SharpCap, and FireCapture.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3 data-start=\"2991\" data-end=\"3030\"\u003e\u003cstrong data-start=\"2995\" data-end=\"3028\"\u003eQuiet \u0026amp; Low Power Consumption\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"3031\" data-end=\"3343\"\u003eOne of the standout features of the ZWO EFW Mini is its \u003cstrong data-start=\"3087\" data-end=\"3130\"\u003esilent operation and minimal power draw\u003c\/strong\u003e. Unlike some bulkier filter wheels that require external power bricks, this model runs efficiently through a standard USB connection, drawing very little current and ensuring quiet, interference-free operation.\u003c\/p\u003e\n\u003ch3 data-start=\"3345\" data-end=\"3389\"\u003e\u003cstrong data-start=\"3349\" data-end=\"3387\"\u003eIdeal Pairing with ZWO ASI Cameras\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"3390\" data-end=\"3725\"\u003eIf you're using a ZWO ASI camera, the EFW Mini is a \u003cstrong data-start=\"3442\" data-end=\"3463\"\u003enatural companion\u003c\/strong\u003e. It’s designed to pair seamlessly with ZWO’s cooled and uncooled imaging cameras, eliminating guesswork when it comes to spacing and software integration. Combined with ZWO’s dedicated filter sets, this wheel makes multi-filter imaging effortless and precise.\u003c\/p\u003e\n\u003ch3 data-start=\"3727\" data-end=\"3765\"\u003e\u003cstrong data-start=\"3731\" data-end=\"3763\"\u003eWhy Choose the ZWO EFW Mini?\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-start=\"3766\" data-end=\"4212\"\u003e\n\u003cli data-start=\"3766\" data-end=\"3840\"\u003e\n\u003cstrong data-start=\"3768\" data-end=\"3795\"\u003eCompact and lightweight\u003c\/strong\u003e – only 300g with a 20mm ultra-slim profile\u003c\/li\u003e\n\u003cli data-start=\"3841\" data-end=\"3891\"\u003e\u003cstrong data-start=\"3843\" data-end=\"3889\"\u003eHolds five 1.25\" or 31mm unmounted filters\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-start=\"3892\" data-end=\"3965\"\u003e\u003cstrong data-start=\"3894\" data-end=\"3963\"\u003ePrecision stepper motor from Japan for reliable, smooth operation\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-start=\"3966\" data-end=\"4020\"\u003e\u003cstrong data-start=\"3968\" data-end=\"4018\"\u003eMinimal backfocus impact—ideal for fast optics\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-start=\"4021\" data-end=\"4081\"\u003e\u003cstrong data-start=\"4023\" data-end=\"4079\"\u003eUSB-powered with no need for external power adapters\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-start=\"4082\" data-end=\"4153\"\u003e\u003cstrong data-start=\"4084\" data-end=\"4151\"\u003eFull ASCOM compatibility with leading astrophotography software\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-start=\"4154\" data-end=\"4212\"\u003e\u003cstrong data-start=\"4156\" data-end=\"4210\"\u003eWhisper-quiet operation with low power consumption\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"4214\" data-end=\"4239\"\u003e\u003cstrong data-start=\"4218\" data-end=\"4237\"\u003eThe Bottom Line\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"4240\" data-end=\"4583\"\u003eFor astrophotographers seeking an \u003cstrong data-start=\"4274\" data-end=\"4314\"\u003eefficient, high-quality, and compact\u003c\/strong\u003e motorized filter wheel, the \u003cstrong data-start=\"4343\" data-end=\"4359\"\u003eZWO EFW Mini\u003c\/strong\u003e is a standout choice. Whether you're transitioning between LRGB filters for true-color imaging or capturing deep-sky objects in narrowband, this filter wheel delivers \u003cstrong data-start=\"4527\" data-end=\"4581\"\u003ereliability, ease of use, and seamless automation.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"4585\" data-end=\"4729\"\u003eUpgrade your imaging rig with the ZWO EFW Mini today and experience the convenience of effortless filter switching with precision engineering.\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\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e2 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":40562102435913,"sku":"EFWMINI","price":199.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/files\/efw-in-hand.jpg?v=1690182719"},{"product_id":"zwo-filter-drawer-m42","title":"ZWO Filter Drawer M42","description":"\u003ch3 data-start=\"136\" data-end=\"229\"\u003eZWO FD M42 II Filter Drawer – Precision and Convenience for Your Astrophotography Setup\u003c\/h3\u003e\n\u003cp data-start=\"231\" data-end=\"576\"\u003eIf you're an astrophotographer looking for a seamless way to swap filters without disrupting your imaging train, the \u003cstrong data-start=\"348\" data-end=\"379\"\u003eZWO FD M42 II Filter Drawer\u003c\/strong\u003e is an excellent solution. Designed with precision and ease of use in mind, this filter drawer simplifies the process of changing filters, making it ideal for both deep-sky and planetary imaging.\u003c\/p\u003e\n\u003ch4 data-start=\"578\" data-end=\"622\"\u003eImproved Design for Greater Stability\u003c\/h4\u003e\n\u003cp data-start=\"624\" data-end=\"1017\"\u003eThe \u003cstrong data-start=\"628\" data-end=\"645\"\u003eZWO FD M42 II\u003c\/strong\u003e is an upgraded version of ZWO’s original filter drawer, engineered for better performance and a more secure fit. It features a \u003cstrong data-start=\"773\" data-end=\"810\"\u003estrong magnetic locking mechanism\u003c\/strong\u003e that ensures your filters stay in place without introducing unwanted movement or flexure. The improved design minimizes light leaks and mechanical shifts, preserving the accuracy of your imaging sessions.\u003c\/p\u003e\n\u003ch4 data-start=\"1019\" data-end=\"1064\"\u003eWide Compatibility for Popular Filters\u003c\/h4\u003e\n\u003cp data-start=\"1066\" data-end=\"1481\"\u003eWith an \u003cstrong data-start=\"1074\" data-end=\"1093\"\u003eM42x0.75 thread\u003c\/strong\u003e, this filter drawer is designed to work seamlessly with a wide range of astrophotography setups. It supports standard \u003cstrong data-start=\"1212\" data-end=\"1234\"\u003e2” mounted filters\u003c\/strong\u003e, allowing you to switch between different narrowband, broadband, and light pollution filters effortlessly. Whether you're using an OSC (one-shot color) or monochrome camera, this filter drawer keeps your workflow efficient and frustration-free.\u003c\/p\u003e\n\u003ch4 data-start=\"1483\" data-end=\"1517\"\u003eQuick and Easy Filter Swaps\u003c\/h4\u003e\n\u003cp data-start=\"1519\" data-end=\"1860\"\u003eSwapping filters during an imaging session can be tedious, especially in cold conditions. The \u003cstrong data-start=\"1613\" data-end=\"1644\"\u003eZWO FD M42 II Filter Drawer\u003c\/strong\u003e is designed for quick changes without disturbing your focus or framing. 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At only \u003cstrong data-end=\"904\" data-start=\"890\"\u003e20mm thick\u003c\/strong\u003e, this filter wheel integrates easily into your imaging train without adding excessive backfocus, making it a perfect companion for ZWO’s full-frame and APS-C cameras.\u003c\/p\u003e\n\u003ch2 data-end=\"1115\" data-start=\"1075\"\u003e\u003cstrong data-end=\"1113\" data-start=\"1078\"\u003eEffortless Electronic Operation\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-end=\"1560\" data-start=\"1117\"\u003eManual filter swaps are a thing of the past. The \u003cstrong data-end=\"1184\" data-start=\"1166\"\u003eZWO EFW 7x36II\u003c\/strong\u003e connects directly to your imaging software, allowing you to cycle through \u003cstrong data-end=\"1291\" data-start=\"1259\"\u003eseven 36mm unmounted filters\u003c\/strong\u003e with just a click. The \u003cstrong data-end=\"1345\" data-start=\"1315\"\u003ehigh-quality stepper motor\u003c\/strong\u003e provides smooth, accurate positioning, ensuring that your selected filter is precisely where it needs to be every time. This means fewer alignment issues, greater repeatability, and a hassle-free imaging session.\u003c\/p\u003e\n\u003ch3 data-end=\"1597\" data-start=\"1562\"\u003e\u003cstrong data-end=\"1595\" data-start=\"1566\"\u003eOptimized for Performance\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-end=\"2175\" data-start=\"1599\"\u003e\n\u003cli data-end=\"1786\" data-start=\"1599\"\u003e\n\u003cstrong data-end=\"1628\" data-start=\"1601\"\u003eFast and Quiet Rotation\u003c\/strong\u003e – The EFW 7x36II uses an advanced stepper motor for ultra-quiet operation. You’ll barely notice the movement, but you’ll appreciate the speed and accuracy.\u003c\/li\u003e\n\u003cli data-end=\"1974\" data-start=\"1787\"\u003e\n\u003cstrong data-end=\"1818\" data-start=\"1789\"\u003eMinimal Power Consumption\u003c\/strong\u003e – The filter wheel runs directly from your camera’s USB port or an external power source, drawing only \u003cstrong data-end=\"1938\" data-start=\"1922\"\u003e120mAh at 5V\u003c\/strong\u003e—no need for bulky power supplies.\u003c\/li\u003e\n\u003cli data-end=\"2175\" data-start=\"1975\"\u003e\n\u003cstrong data-end=\"2003\" data-start=\"1977\"\u003eSecure Filter Mounting\u003c\/strong\u003e – Designed to accommodate \u003cstrong data-end=\"2062\" data-start=\"2030\"\u003eseven 36mm unmounted filters\u003c\/strong\u003e, this wheel is perfect for LRGB + Ha, OIII, SII, and even specialty filters like UV\/IR cut or methane filters.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-end=\"2223\" data-start=\"2177\"\u003e\u003cstrong data-end=\"2221\" data-start=\"2180\"\u003eSeamless Integration with ZWO Cameras\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-end=\"2613\" data-start=\"2225\"\u003eDesigned specifically for ZWO’s \u003cstrong data-end=\"2279\" data-start=\"2257\"\u003eASI series cameras\u003c\/strong\u003e, the \u003cstrong data-end=\"2299\" data-start=\"2285\"\u003eEFW 7x36II\u003c\/strong\u003e works flawlessly with popular astrophotography software, including ASCOM drivers and native support in \u003cstrong data-end=\"2457\" data-start=\"2403\"\u003eZWO’s ASI Studio, NINA, and Sequence Generator Pro\u003c\/strong\u003e. The included \u003cstrong data-end=\"2489\" data-start=\"2472\"\u003eUSB 2.0 cable\u003c\/strong\u003e ensures a straightforward plug-and-play connection. No complex drivers, no fiddling—just smooth operation from the start.\u003c\/p\u003e\n\u003ch2 data-end=\"2659\" data-start=\"2615\"\u003e\u003cstrong data-end=\"2657\" data-start=\"2618\"\u003eIdeal for Advanced Astrophotography\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-end=\"3087\" data-start=\"2661\"\u003eIf you’re using a \u003cstrong data-end=\"2700\" data-start=\"2679\"\u003emonochrome camera\u003c\/strong\u003e, this filter wheel is an essential upgrade. Whether you’re stacking high-resolution LRGB images or capturing breathtaking \u003cstrong data-end=\"2841\" data-start=\"2823\"\u003eHubble-palette\u003c\/strong\u003e narrowband images, the ability to rapidly switch filters means less time wasted and more data captured. The \u003cstrong data-end=\"2971\" data-start=\"2950\"\u003e7-position design\u003c\/strong\u003e also gives you the flexibility to include additional specialty filters without constantly swapping them manually.\u003c\/p\u003e\n\u003ch3 data-end=\"3125\" data-start=\"3089\"\u003e\u003cstrong data-end=\"3123\" data-start=\"3093\"\u003eSpecifications at a Glance\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul data-end=\"3388\" data-start=\"3127\"\u003e\n\u003cli data-end=\"3184\" data-start=\"3127\"\u003e\n\u003cstrong data-end=\"3146\" data-start=\"3129\"\u003eFilter Slots:\u003c\/strong\u003e 7 (supports unmounted 36mm filters)\u003c\/li\u003e\n\u003cli data-end=\"3208\" data-start=\"3185\"\u003e\n\u003cstrong data-end=\"3201\" data-start=\"3187\"\u003eThickness:\u003c\/strong\u003e 20mm\u003c\/li\u003e\n\u003cli data-end=\"3233\" data-start=\"3209\"\u003e\n\u003cstrong data-end=\"3222\" data-start=\"3211\"\u003eWeight:\u003c\/strong\u003e ~17.6 oz\u003c\/li\u003e\n\u003cli data-end=\"3275\" data-start=\"3234\"\u003e\n\u003cstrong data-end=\"3246\" data-start=\"3236\"\u003eMotor:\u003c\/strong\u003e High-quality stepper motor\u003c\/li\u003e\n\u003cli data-end=\"3323\" data-start=\"3276\"\u003e\n\u003cstrong data-end=\"3300\" data-start=\"3278\"\u003ePower Requirement:\u003c\/strong\u003e 5V, 120mAh (via USB)\u003c\/li\u003e\n\u003cli data-end=\"3388\" data-start=\"3324\"\u003e\n\u003cstrong data-end=\"3353\" data-start=\"3326\"\u003eSoftware Compatibility:\u003c\/strong\u003e ASCOM, ZWO ASI Studio, NINA, SGP\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-end=\"3414\" data-start=\"3390\"\u003e\u003cstrong data-end=\"3412\" data-start=\"3393\"\u003eThe Bottom Line\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp data-end=\"3820\" data-start=\"3416\"\u003eThe \u003cstrong data-end=\"3438\" data-start=\"3420\"\u003eZWO EFW 7x36II\u003c\/strong\u003e is a game-changer for deep-space imagers looking for seamless filter switching. Its lightweight yet durable build, ultra-precise stepper motor, and software compatibility make it a must-have for serious astrophotographers. Whether you’re capturing galaxies, nebulae, or planetary details, this filter wheel helps you focus on what really matters—getting the best possible images.\u003c\/p\u003e\n\u003cp data-end=\"3922\" data-start=\"3822\"\u003eUpgrade your imaging setup today and experience the difference of a high-performance filter wheel.\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\"\u003e2 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":40562127339593,"sku":"EFW736","price":299.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/files\/016.jpg?v=1690186934"},{"product_id":"astro-tech-0-8x-reducer-field-flattener-for-astro-tech-at90cft-triplet-apo-refractor","title":"Astro-Tech 0.8x Reducer\/Field Flattener for Astro-Tech AT90CFT and AT90EDX Triplet APO Refractor","description":"\u003cp\u003eThe AT90CFT and AT90EDX are excellent visual scopes at 540mm f\/6, but if you're imaging through either one, you already know the two things an f\/6 refractor does to your photos: it curves the field and it makes you wait. Stars that are pin-sharp in the center turn into little comets near the corners. And at f\/6, you need longer exposures to pull faint nebulosity out of the background. The AT90CFTRF fixes both problems in one piece of glass. It reduces the focal length to 432mm, speeding the system to f\/4.8 — a 56% increase in photographic speed — and it flattens the field so stars stay round and tight all the way to the corners of your imaging chip.\u003c\/p\u003e\n\u003ch3\u003eDesigned for Two Scopes\u003c\/h3\u003e\n\u003cp\u003eThis reducer\/flattener is not a universal fit. It's designed and optimized specifically for the Astro-Tech AT90CFT (carbon fiber tube) and AT90EDX (aluminum tube) 90mm f\/6 triplet APO refractors. The optical correction is matched to the curvature profile of those two scopes, which is why the stars come out round across the field instead of trailing into elongated shapes at the edges. A generic 0.8x reducer can reduce focal length, but it won't correct the specific field curvature of your scope. This one does.\u003c\/p\u003e\n\u003ch3\u003eHow It Connects\u003c\/h3\u003e\n\u003cp\u003eThe scope side threads into the focuser or camera angle adjuster using M63×1 metric threads — a secure, repeatable connection that doesn't shift between sessions. No set screws, no compression ring, no wobble. The camera side has standard 48mm T-threads, connecting to a T-ring for DSLR and mirrorless bodies, or directly to dedicated CMOS and CCD astronomy cameras, which come with 48mm T-threads built in.\u003c\/p\u003e\n\u003cp\u003eBack focus is 55mm from the shoulder of the reducer to the image plane. That's the standard DSLR spacing — meaning a T-ring and camera body will put you at the correct distance without spacers or adjustments. For dedicated astronomy cameras, you may need a short spacer to reach the same 55mm. Check your camera's back focus specification and add spacers if needed.\u003c\/p\u003e\n\u003ch3\u003eBuilt-In Filter Holder\u003c\/h3\u003e\n\u003cp\u003eThe top cap of the reducer unthreads from the body, exposing a 48mm filter holder on the underside. This lets you place a 2\" threaded filter — a light pollution filter, narrowband filter, or UV\/IR cut — directly into the optical path without adding a separate filter drawer to your imaging train. One less piece of hardware between the scope and the sensor, and one less source of spacing error or tilt.\u003c\/p\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAstro-Tech AT90CFTRF 0.8x reducer\/field flattener\u003c\/li\u003e\n\u003cli\u003eSlip-on rubber dust cover for 48mm T-threads (camera side)\u003c\/li\u003e\n\u003cli\u003eSlip-on dust cover for scope-side barrel\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e0.8x focal reduction — 540mm f\/6 becomes 432mm f\/4.8\u003c\/strong\u003e — A 56% increase in photographic speed (light per pixel). Shorter exposures to reach the same signal, or deeper images in the same exposure time. Either way, your total imaging time per target drops significantly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eField flattening corrects edge-of-field curvature\u003c\/strong\u003e — Refractors curve the focal plane. Without correction, stars in the outer third of the field elongate into streaks or comets. The flattener brings the entire field into focus on a flat imaging sensor, producing round stars corner to corner.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFully multi-coated optics\u003c\/strong\u003e — All air-to-glass surfaces are multi-coated to minimize reflections and maintain contrast. Important in a reducer that sits in the optical path of every photon reaching your sensor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM63×1 threaded scope connection\u003c\/strong\u003e — Threads securely into the AT90CFT\/AT90EDX focuser or camera angle adjuster. No compression ring, no play — a solid, repeatable mechanical connection that eliminates tilt between sessions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e48mm T-thread camera connection\u003c\/strong\u003e — DSLR and mirrorless bodies connect via a T-ring (sold separately); dedicated CMOS\/CCD astronomy cameras attach directly — 48mm T-threads are standard on most.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e55mm back focus (standard DSLR spacing)\u003c\/strong\u003e — A T-ring and DSLR body reach focus without spacers. Dedicated astronomy cameras may need a short spacer depending on their native back focus distance. The product manual includes spacing diagrams.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated 48mm filter holder\u003c\/strong\u003e — Unthread the top cap to access a built-in 2\" filter holder. Accepts standard 48mm threaded filters — narrowband, UHC, UV\/IR cut — without adding a separate filter drawer to the imaging train.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLightweight (9 oz)\u003c\/strong\u003e — Adds minimal weight to your imaging train. Won't stress the focuser or shift balance on a light mount.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eObserving Tip\u003c\/h3\u003e\n\u003cp\u003eGet the 55mm back focus right before you shoot a single frame. Measure from the shoulder of the reducer — the flat face where it meets the focuser — to your camera sensor. For a DSLR with a T-ring, 55mm is usually automatic. For a dedicated astronomy camera, add up the T-ring or adapter thickness, any spacers, and the camera's flange-to-sensor distance. If the total is less than 55mm, add spacers. If it's more, you'll need a shorter adapter or fewer spacers. Getting this measurement right is the single biggest factor in whether your corner stars are round or elongated. The product manual has a spacing diagram — use it.\u003c\/p\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do I need a T-ring?\u003c\/strong\u003e\u003cbr\u003eIf you're using a DSLR or mirrorless camera, yes — you need a T-ring for your specific camera mount (sold separately). The reducer's camera side has 48mm T-threads that connect to the T-ring. If you're using a dedicated CMOS or CCD astronomy camera, no T-ring is needed — those cameras typically have 48mm T-threads built in and connect directly to the reducer.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use filters with this reducer?\u003c\/strong\u003e\u003cbr\u003eYes. Unthread the top cap of the reducer to expose a built-in 48mm filter holder on the underside. Standard 2\" threaded filters (48mm) thread right in — narrowband, light pollution, UV\/IR cut. The filter sits inside the reducer body, keeping your imaging train compact.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What's the correct back focus distance?\u003c\/strong\u003e\u003cbr\u003e55mm from the shoulder of the reducer (where it meets the focuser) to the image plane (your camera sensor). For a DSLR with a standard T-ring, this spacing is typically automatic. For a dedicated astronomy camera, you may need to add spacers to reach 55mm. Incorrect spacing is the most common cause of elongated corner stars — it's worth measuring carefully. The included product manual has a spacing diagram for common camera configurations.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How much faster is f\/4.8 compared to f\/6?\u003c\/strong\u003e\u003cbr\u003eAbout 56% faster in terms of light gathered per pixel per unit time. In practical terms, if you were shooting 5-minute exposures at f\/6 to reach a certain signal level, you'd reach the same level in roughly 3 minutes and 12 seconds at f\/4.8. Over a multi-hour session, that adds up to significantly more data or significantly less time on each target.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Will this work for visual observing?\u003c\/strong\u003e\u003cbr\u003eTechnically yes — it will reduce magnification and widen the field, and the flattening will improve edge sharpness in wide-field eyepieces. But it's designed and optimized for photographic use with a flat sensor, not for visual observing through an eyepiece. Most AT90CFT\/AT90EDX owners use the reducer strictly for imaging and observe without it.\u003c\/p\u003e\n\u003ch3\u003eOptional Accessories\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e48mm T-Ring (for your camera mount)\u003c\/strong\u003e — Required for DSLR and mirrorless cameras. Available for Canon EF, Nikon F, Sony E, and other mounts. The T-ring threads onto the reducer's 48mm camera-side connection and adapts it to your camera body. Not needed for dedicated CMOS\/CCD astronomy cameras.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e48mm Threaded Filters\u003c\/strong\u003e — Light pollution, narrowband (H-alpha, O-III, S-II), or UV\/IR cut filters thread directly into the reducer's built-in filter holder. No separate filter drawer required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpacer Rings (if using a dedicated astronomy camera)\u003c\/strong\u003e — Needed to achieve the 55mm back focus distance with cameras that have a shorter native back focus than a DSLR. Available in various thicknesses (e.g., 11mm, 16.5mm, 21mm). Check your camera's specs and add spacers to make up the difference.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFinal Thoughts\u003c\/h3\u003e\n\u003cp\u003eIf you own an AT90CFT or AT90EDX and you're imaging with it, this is not an optional accessory — it's the other half of the imaging system. The scope gives you the light and the color correction. The reducer gives you the speed and the flat field. Stars round to the corners, exposures cut by more than a third, and the whole thing threads together without adapters or guesswork. Dedicated, matched, done.\u003c\/p\u003e\n\u003ch2\u003eTech Details:\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background-color: #f0f4f8;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eProduct Type\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003eFocal reducer and field flattener\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #ffffff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eReduction Factor\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003e0.8x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f0f4f8;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eCompatible Telescopes\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003eAstro-Tech AT90CFT and AT90EDX 90mm f\/6 triplet APO refractors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #ffffff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eResulting Focal Length\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003e432mm (from 540mm native)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f0f4f8;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eResulting Focal Ratio\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003ef\/4.8 (from f\/6 native)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #ffffff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eCoatings\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003eFully multi-coated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f0f4f8;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eScope-Side Connection\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003eM63×1 metric thread (threads into focuser or camera angle adjuster)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #ffffff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eCamera-Side Connection\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003e48mm T-thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f0f4f8;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eBack Focus\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003e55mm (shoulder of reducer to image plane)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #ffffff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eFilter Holder\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003eBuilt-in 48mm (2\") threaded filter holder (accessible by unthreading top cap)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f0f4f8;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003e9 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #ffffff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eIncluded\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003eReducer\/flattener, slip-on rubber cover for T-threads, slip-on cover for scope-side barrel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f0f4f8;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eProduct Manual\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003eIncluded (PDF download on product page)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #ffffff;\"\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc; font-weight: bold; width: 50%;\"\u003eWarranty\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 14px; border: 1px solid #cccccc;\"\u003e1 year manufacturer warranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Astro-Tech","offers":[{"title":"Default Title","offer_id":41403600961609,"sku":"AT90CFTRF","price":199.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/files\/image_fd016b25-9d57-4773-9219-2d18891ff86c.jpg?v=1716199025"},{"product_id":"explore-scientific-2-field-flattener-for-imaging-for-f-5-to-f-7-refractors","title":"Explore Scientific 2\" Field Flattener for Imaging for f\/5 to f\/7 Refractors","description":"\u003ch3 data-end=\"277\" data-start=\"194\"\u003eExplore Scientific 2\" Field Flattener – Precision Imaging for Fast Refractors\u003c\/h3\u003e\n\u003cp data-end=\"684\" data-start=\"279\"\u003eIf you're a deep-sky astrophotographer using a fast refractor, you’ve likely encountered the frustration of field curvature—stars near the center of your image look pinpoint sharp, but those toward the edges turn into bloated, misshapen blurs. That’s where the \u003cstrong data-end=\"581\" data-start=\"540\"\u003eExplore Scientific 2\" Field Flattener\u003c\/strong\u003e steps in, offering a simple yet powerful solution to transform your telescope’s imaging performance.\u003c\/p\u003e\n\u003cp data-end=\"1114\" data-start=\"686\"\u003eDesigned for refractors with focal ratios between \u003cstrong data-end=\"751\" data-start=\"736\"\u003ef\/5 and f\/7\u003c\/strong\u003e, this high-quality optical accessory ensures your stars remain sharp and well-defined across the entire field of view, eliminating the curved focal plane that distorts stars at the periphery of your images. Whether you’re capturing wide-field nebulae, open clusters, or galaxies, this flattener helps you maximize the full potential of your refractor’s optics.\u003c\/p\u003e\n\u003ch4 data-end=\"1153\" data-start=\"1116\"\u003e\u003cstrong data-end=\"1151\" data-start=\"1121\"\u003eWhy Use a Field Flattener?\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp data-end=\"1510\" data-start=\"1154\"\u003eRefractors, especially faster ones, inherently suffer from field curvature—a natural optical aberration that causes stars to appear in focus at the center while progressively blurring toward the edges. This is particularly noticeable in full-frame or APS-C sensor astrophotography, where the larger sensor size reveals these distortions more prominently.\u003c\/p\u003e\n\u003cp data-end=\"1755\" data-start=\"1512\"\u003eThe \u003cstrong data-end=\"1557\" data-start=\"1516\"\u003eExplore Scientific 2\" Field Flattener\u003c\/strong\u003e corrects this issue by adjusting the light path so that every star, from the center to the very edge, lands on the same focal plane. The result? Stunning, pinpoint stars across your entire image.\u003c\/p\u003e\n\u003ch4 data-end=\"1780\" data-start=\"1757\"\u003e\u003cstrong data-end=\"1778\" data-start=\"1762\"\u003eKey Features\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul data-end=\"2806\" data-start=\"1782\"\u003e\n\u003cli data-end=\"1970\" data-start=\"1782\"\u003e\n\u003cstrong data-end=\"1823\" data-start=\"1784\"\u003eOptimized for f\/5 to f\/7 refractors\u003c\/strong\u003e – Designed to match the optical characteristics of fast refractors, providing the best balance of correction for a wide range of imaging setups.\u003c\/li\u003e\n\u003cli data-end=\"2115\" data-start=\"1971\"\u003e\n\u003cstrong data-end=\"1999\" data-start=\"1973\"\u003eLarge 2\" barrel design\u003c\/strong\u003e – Ensures full-frame sensor coverage without vignetting, preserving a bright, even field across your astrophotos.\u003c\/li\u003e\n\u003cli data-end=\"2274\" data-start=\"2116\"\u003e\n\u003cstrong data-end=\"2147\" data-start=\"2118\"\u003eFully multi-coated optics\u003c\/strong\u003e – Reduces reflections and increases light transmission, improving contrast and preserving faint details in deep-sky objects.\u003c\/li\u003e\n\u003cli data-end=\"2456\" data-start=\"2275\"\u003e\n\u003cstrong data-end=\"2301\" data-start=\"2277\"\u003eThreaded for filters\u003c\/strong\u003e – The 2\" nosepiece includes standard filter threads, allowing you to seamlessly integrate light pollution or narrowband filters into your imaging train.\u003c\/li\u003e\n\u003cli data-end=\"2658\" data-start=\"2457\"\u003e\n\u003cstrong data-end=\"2490\" data-start=\"2459\"\u003eVersatile camera connection\u003c\/strong\u003e – The flattener terminates in a standard \u003cstrong data-end=\"2548\" data-start=\"2532\"\u003eM42 T-thread\u003c\/strong\u003e, making it easy to attach most DSLR and dedicated astronomy cameras with the appropriate T-ring or adapter.\u003c\/li\u003e\n\u003cli data-end=\"2806\" data-start=\"2659\"\u003e\n\u003cstrong data-end=\"2687\" data-start=\"2661\"\u003eAll-metal construction\u003c\/strong\u003e – A robust and precisely machined aluminum housing ensures durability while maintaining excellent optical alignment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 data-end=\"2853\" data-start=\"2808\"\u003e\u003cstrong data-end=\"2851\" data-start=\"2813\"\u003eHow It Works in Your Imaging Setup\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp data-end=\"3237\" data-start=\"2854\"\u003eUsing the \u003cstrong data-end=\"2905\" data-start=\"2864\"\u003eExplore Scientific 2\" Field Flattener\u003c\/strong\u003e is as simple as inserting it into your focuser, attaching your camera, and fine-tuning your back focus. This flattener is designed for use with \u003cstrong data-end=\"3072\" data-start=\"3050\"\u003e55mm of back focus\u003c\/strong\u003e, which is standard for most astrophotography setups, meaning it will work seamlessly with your DSLR and T-ring or dedicated astro camera with appropriate spacers.\u003c\/p\u003e\n\u003cp data-end=\"3540\" data-start=\"3239\"\u003eIf you’re unsure about your specific back focus requirements, adjusting with additional extension rings may be necessary for optimal performance. The results, however, are well worth it—razor-sharp stars across your entire image, making your astrophotos look more professional and visually striking.\u003c\/p\u003e\n\u003ch4 data-end=\"3588\" data-start=\"3542\"\u003e\u003cstrong data-end=\"3586\" data-start=\"3547\"\u003eWho Should Consider This Flattener?\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp data-end=\"3905\" data-start=\"3589\"\u003eThis field flattener is a must-have for astrophotographers using fast refractors who want to eliminate edge distortions without altering their telescope’s native focal length. It’s particularly well-suited for those with \u003cstrong data-end=\"3862\" data-start=\"3810\"\u003e80mm to 130mm refractors in the f\/5 to f\/7 range\u003c\/strong\u003e, ensuring a wide range of compatibility.\u003c\/p\u003e\n\u003cp data-end=\"4088\" data-start=\"3907\"\u003eFor those looking to enhance their imaging without the added complexity of a reducer-flattener combo, this straightforward, high-performance solution delivers exceptional results.\u003c\/p\u003e\n\u003ch4 data-end=\"4115\" data-start=\"4090\"\u003e\u003cstrong data-end=\"4113\" data-start=\"4095\"\u003eFinal Thoughts\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp data-end=\"4481\" data-start=\"4116\"\u003eAstrophotography demands precision, and the \u003cstrong data-end=\"4201\" data-start=\"4160\"\u003eExplore Scientific 2\" Field Flattener\u003c\/strong\u003e is an essential tool for anyone looking to achieve stunning, flat-field images with their fast refractor. With its premium optics, durable build, and simple integration into your imaging train, this flattener is a game-changer for capturing deep-sky objects in all their glory.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eNOTE: This device is for photographic use only. It is NOT intended for visual use.\u003c\/span\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\u003eWeight\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e8 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!----\u003e","brand":"Explore Scientific","offers":[{"title":"Default Title","offer_id":41403619934281,"sku":"ES2FF","price":119.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/files\/image_0792a453-a8be-4af6-9c35-f507b9b9706a.jpg?v=1716201191"},{"product_id":"zwo-0-7x-reducer-for-ff107apo-and-ff130apo-telescopes","title":"ZWO 0.7x Reducer for FF107APO and FF130APO Telescopes","description":"\u003cp\u003e\u003cspan\u003eIf you are needing a faster version of your ZWO FF107APO or FF130APO, this reducer will get you there.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cmeta charset=\"UTF-8\"\u003eZWO has released a new 3-inch 0.7× full frame reducer that is compatible with the FF107APO and FF130APO telescopes. It has a three-element optical design, including one element made of ED glass. Its reduction factor is 0.7, which gives the FF107APO a shortened focal ratio of f\/4.9 and a shorter focal length of 524mm. This allows for less total integration time and a wider field of view, bringing more convenience and possibilities for your wide-field deep-sky imaging. The reducer has a standard 55mm back focus and comes with M68, M54, and M48 threaded adapters for easy attachment. Connecting to the APO is fairly simple. Prepare the FF107APO telescope tube and the focal reducer. Unscrew the M86 to 2-inch adapter at the end of the FF107APO telescope tube. Unscrew the end cap of the 0.7X reducer. Insert the reducer into the focuser inner tube and tighten it.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eTech Details: \u003c\/span\u003e\u003c\/h2\u003e\n\u003ctable class=\"table\" id=\"product-attribute-specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd class=\"data\"\u003e2 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c!----\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":41455635693641,"sku":"ZWOF107130RE","price":399.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0573\/7974\/9961\/files\/image_99398898-91b7-498c-94d2-e56746455bef.jpg?v=1723838450"}],"url":"https:\/\/astronomics.com\/collections\/imaging-accessories.oembed?page=8","provider":"Astronomics","version":"1.0","type":"link"}