On Sale

This Astro-Tech ED refractor has: 60mm f/6 fully multicoated FPL-53 and Lanthanum doublet refractor optics dual-speed Rack and Pinion 2” focuser w...

ZWO EAF 5V Electronic Automatic Focuser – Precision at Your Fingertips If you’ve ever struggled with getting that perfect focus during an imaging s...

There's a moment in every refractor owner's life when the view snaps into focus and the background goes black — truly black, the way only a well-co...

The AT70ED delivers genuine ED glass performance at an honest price. Seventy millimeters of aperture at f/6 yields 420mm of focal length — a sweet ...

Some observers feel that the Astro-Tech AT130EDT 5.12" f/7 ED triplet apochromatic refractor compares favorably in performance to scopes nearly fou...

Explore Scientific iEXOS-100 PMC-Eight Equatorial Tracker System The Explore Scientific iEXOS-100 PMC-Eight™ Equatorial Tracker System is a portabl...

This Explore Scientific 24mm argon-purged eyepiece has a wide 68° field that gives impressively sharp and contrasty medium power images with virtua...

Most small refractors ask you to buy a separate field flattener or reducer to get round stars across your imaging chip. Then you spend an evening s...

The "picture window on space" viewing experience of this 82° field Explore Scientific 11mm 1.25" argon-purged eyepiece gives you the magnification ...

The AT125EDL occupies a rare middle ground: it's large enough to gather meaningful light and resolution, yet nimble enough that you can pick it up,...

This 82° field Explore Scientific 30mm 2" argon-purged waterproof eyepiece gives you the big picture, making you feel like you're relaxing in front...

The Explore Scientific 9mm argon-purged waterproof 2" eyepiece combines a high power capability with a 100° apparent field to provide a jaw-droppin...

The 100° apparent field of this Explore Scientific first-of-its-kind 25mm argon-purged waterproof 2" eyepiece provides superb maximum field/medium ...

This 82° field Explore Scientific 24mm 2" argon-purged waterproof eyepiece makes observing feel like you're relaxing in front of a picture window o...

This Universal Astro 2" to 1.25" eyepiece adapter lets you use 1.25" accessories in a 2" focuser or star diagonal . .  This Universal Astro 2" to 1...

This Explore Scientific 16mm argon-purged eyepiece is a truly fine medium power eyepiece with a substantial 68° field of view that can provide a co...

These split and hinged UA 79mm i.d. optical tube mounting rings are made of solid aluminum, anodized black for long life. They are felt-lined and h...

The solid and stable Explore Scientific Twilight I light-to-medium-duty altazimuth mount and tripod has geared slow motion controls.  It weighs onl...

This medium power 14mm Explore Scientific 82° field argon-purged eyepiece will show you surprisingly wide deep space panoramas with any type or foc...

The 100° apparent field of the Explore Scientific 14mm argon-purged waterproof 2" eyepiece provides incredible maximum field/medium power observing...

Celestron NexStar Evolution 8” Schmidt-Cassegrain Telescope The NexStar Evolution 8” is the center of the Evolution series — the model where portab...

This 2" 12mm 92° field Explore Scientific hyper-wide eyepiece provides an exceptionally immersive medium/medium high power observing experience. Yo...

This 6" Explore Scientific AR152 achromatic refractor optical tube is a sensational value - a big 6" (152mm) and fast f/6.5 refractor that's priced...

This 82° field Explore Scientific 18mm 2" argon-purged waterproof eyepiece makes observing with many telescopes feel like you're taking a stroll th...