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

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

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

This adapter will step M48 threads up to M54.  It has M48 female on the inside and M54 male on the outside.  It does not add any length to the opti...

Looking to permanently mount your AVX mount? You'll want this adapter kit to easily attach the AVX equatorial mount to a permanent pier. The top pl...

ZWO Atmospheric Dispersion Corrector is used to reduce the effect of atmospheric dispersion on lunar and planetary images The prisms are the cente...

20mm long adapter from female M48x0.75 to male M48x0.75 threads.  This can be useful to get 55mm backfocus with a ZWO cooled camera (17.5mm) and St...

M54 male to M54 male adapter.  Adds 1mm to backfocus.  Useful for attaching a ZWO 6200 camera to the ZWO 2" filter wheel without bolting the wheel ...

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

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.

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...

About the book from the Author, David Levy: "It is a book I have been working on for almost a decade, and it is the story of my life. The book begi...

If you are loading extra equipment on your Celestron Advanced VX Equatorial Mount, you may need additional counterweights. This anodized counterwei...

The only purpose of this adapter is to replace the top of an already existing HyperStar adapter to change its thread type.  An example of this is i...

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

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

CNC machined primary mirror mask made of aluminum (EN AW-6061), black matte anodized, suitable for Skywatcher 200PDS/Quattro The precisely machined...

Attach a variety of accessories to your Advanced CG-5 or Advanced VX mount with this Universal Mounting Plate. Several different mounting holes to ...

Quality X-Cel LX 2x Barlow doubles the magnification of any 1.25” eyepiece 3-element apochromatic, fully multi-coated optics offer up bright, shar...

7.5mm M42 to M42 spacer

Get ready for the next awe-inspiring comet with a pair of sleek, portable Celestron Cometron 7x50mm binoculars. The large 50mm objective lenses an...