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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...

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

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...

What type of telescope is best for beginners? Can I use my camera to take photographs through a telescope? How good are the new computerized tele...

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

Baader H-alpha / O-III / S-II Narrowband Filter Set - Precision Grade 6.5 nm FWHM, recommended for optical systems from f / 10 to f / 3.5 Refle...

20mm adapter that connects Starizona's Filter Slider to an M42 thread. The adapter has female M42 threads on the telescope side and male Filter Sli...

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...

CNC machined secondary spider made of aluminum (EN AW-6061), black matte anodized, suitable for Skywatcher 150 P/PDS/Quattro This secondary spider ...

This is the top camera adapter plate for our T-Adapter with Filter Holder for large EdgeHD scopes.  The T-adapter normally comes with M42 threads, ...

Best-selling star chart, ideal for beginning astronomers!These charts are the perfect way to learn the stars and constellations. Simply rotate the ...

SOLAR SAFE TELESCOPE FILTER: Filter conforms to the ISO 12312-2:2015(E) international safety standard for filters directly viewing the Sun. The ...

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...