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Virtual View - The Visual Back with a Twist! Have you ever been to a star party with both kids and adults and wished you had an easy way to adjust ...

Dovetail plate adapter. Works with both D and V series plates. Mounts to existing rings or telescopes. For use with dovetail plate. Once mounted, n...

  Omni eyepieces offer a quality 4-element Plössl optical design at a super affordable price Rubber eyecups provide comfort and increase contrast....

Use this dual finder bracket to mount multiple items to a single finder shoe.  Perfect for a small guidescope like the ZWO Mini 30mm along side a Z...

OAG-L has a large prism size of 12*12mm, far bigger than M68 OAG. The bigger clear aperture brings wider field of view in guiding. It is easy to us...

Adapter for HyperStar 8 or 6 when using a ZWO Filter Drawer (M42) and a ZWO Cooled Camera. 

The filter wheel body is CNC milled from an aircraft graded aluminum block. Excellent craftsmanship, very thin and light with only 20mm thickness....

T-thread adapter for autofocus Canon EOS EF cameras.

This PETG 3D printed altitude knob replaces the original Sky-Watcher EQ6 altitude knob with a larger easier to grab alternative.  To install simply...

NexStar+ Hand Control is compatible with all altazimuth (AZ) NexStar telescopes Flash upgradeable via the Internet; latest updates can be found at...

  Enables automatic alignment of your Celestron computerized telescope. See a full list of compatible telescopes in the technology tab. No need to...

Sorbothane gasket used in HyperStar conversion kit for Celestron 8" SCTs. Useful for retrofitting a factory-installed Fastar secondary assembly so ...

Sorbothane gasket used in HyperStar conversion kit for Celestron 11" SCTs. Useful for retrofitting a factory-installed Fastar secondary assembly so...

Sun Catcher Solar Eclipse Glasses (4-Pack Assortment) Watch the Total Eclipse Event on April 8th, 2024 in safety, comfort, and style. Made with an...

This bracket provides a solid, easy attachment of the ZWO EAF autofocus motor to a Skywatcher Quattro Newtonian focuser.  There are two versions of...

20mm adapter that connects Starizona's Filter Slider to the Stock RASA 11 adapter for ZWO Cooled cameras. Yay!

NexStar+ Hand Control works with Celestron equatorially mounted computerized telescopes Compatible with Advanced VX, CGEM, CGEM II, CGX, and CGX-...

This new 1.35 kg (3 lb) counterweight is designed for SkyTracker Pro and SkyGuider pro counterweight package (#3324), as well as other iOptron moun...

12-volt DC power cord to connect Celestron Advanced Series, AVX, CPC, CGE, and NexStar telescopes to battery supply. Cigarette-lighter style plug.

This is the standard stainless steel counterweight included with HyperStar lenses for fork-mounted telescopes. It has a 1.25" barrel that fits into...

M42 female to M42 male 5mm spacer.

This version of the Counterweight Set will only work with the CPC-1100. For other Celestron 11" SCTs, click here. Accurate balance is necessary for...

Use this adapter to attach accessories with standard M48 filter threads to a 2" focuser. The adapter has male M48 threads on one side, and a male 2...

7.5mm M42 to M42 spacer

Variable polarizing filters are one of the best filters you can have for a telescope.  They are used to cut down the glare from the moon and bright...

Sorbothane gasket used in HyperStar conversion kit for Celestron 9.25" SCTs. Useful for retrofitting a factory-installed Fastar secondary assembly ...

ZWO EFW (5 x 2″or 7 x 2″) Product weight: EFW 5 x 2″=500g / EFW 7 x 2″=650g Power supply: USB2.0 Control Mode: ASCOM and SDK Driver: Free of driver...

ASI6200MC Pro All Pro cameras (with cooler) need to be connected to an external 11-14v power supply to image. You can also use ASIAIR to power the ...

The Starizona Cool Edge was named one of Sky & Telescope's Hot Products for 2012! This innovative product from Starizona is designed to hel...

All Pro cameras (with cooler) need to be connected to an external 11-14v power supply to image. You can also use ASIAIR to power the cameras. Even ...

Most accurate way to guide – improved accuracy compared to using a separate guide scope. 12.5mm multi-coated prism with aluminized backing for max...