Optical Tube Assemblies

Choose To Extend Your warranty for only £49.00

A reducer will brighten your view, seeing more objects & the view is optimised for imaging (photography).

A lens hood will shield stray light & dew fall.

C8 Optical Tube Assembly as used in the best selling Celestron Nexstar 8se. Sold without eyepiece, visual back or finderscope. Ideal replacing a damaged telescope or want to upgrade to the magic 8 inch aperture.

The tripod socket on this OTA makes it ideal for terrestrial use as well.

With XLT multi-coatings & protective case.

Celestron's C5 is a 5" (127mm) aperture, 1250 mm f/10 Schmidt-Cassegrain optical system. Its optical excellence is the reason it was chosen by NASA for many space shuttle missions. 

Celestron Schmidt-Cassegrain Optical Tube Assemblies (OTA) are available individually for use with your favorite mount. Each OTA is made to the same exacting standards as those used on all our high quality telescopes.

Sky-Watcher Skymax-102 (EQ-2) 102mm (4") f/1300 Maksutov-Cassegrain Telescope. The Sky-Watcher SKYMAX Maksutov-Cassegrains are the ultimate ‘take-anywhere’ telescopes. They are also ideal if working space is limited.

Celestron Schmidt-Cassegrain Optical Tube Assemblies (OTA) are available individually for use with your favorite mount. Each OTA is made to the same exacting standards as those used on all our high quality telescopes. 

Celestron Schmidt-Cassegrain Optical Tube Assemblies (OTA) are available individually for use with your favorite mount. Each OTA is made to the same exacting standards as those used on all our high quality telescopes.

A rival to the Celestron C6 OTA for performance, albeit not for wide-field imaging or for cool-down time. An excellent lunar and planetary telescope, both for imaging and observing.

Easily the best value for money 7" Mak available.

EdgeHD is an aplanatic Schmidt telescope designed to produce aberration-free images across a wide visual and photographic field of view. 

Warranty: 2 years

EdgeHD is an aplanatic Schmidt telescope designed to produce aberration-free images across a wide visual and photographic field of view. 

Warranty: 2 years

Importantly, a lens hood (right) will shield your view from stray light & dew fall.

Importantly, a lens hood (right) will shield your view from stray light & dew fall.

Celestron Schmidt-Cassegrain Optical Tube Assemblies (OTA) are available individually for use with your favorite mount. Each OTA is made to the same exacting standards as those used on all our high quality telescopes.