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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...

The New and Improved ZWO EAF Pro Precision Focusing at Your Fingertips The new generation of ZWO EAF continues the brand’s signature minimalist des...

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

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...

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

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 ...

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

This is the standard stainless steel counterweight for use with HyperStar lenses on fork-mounted telescopes (also known as Alt/Az mounts).  The wei...

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

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...

M42 female to M42 male 5mm spacer.

ZWO ASI220MM Mini Monochrome Camera    

  This 2" mounted APT-T dual band 5nm Ha & OIII filter is optimized to work with imaging systems slower than f/4. For faster optics from f/2.2 ...

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

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...

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

7.5mm M42 to M42 spacer

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...

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

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

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

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

This kit allows a non-HyperStar-compatible SCT to be converted into a compatible telescope. The kit includes three components that replace the orig...