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Can be used to Celestron Edge C 9.25 in combination with Celestron’s focal reducer only. Focal reducer has to be mounted...

Lunt Solar Systems zoom-eyepiece with variable focal length is ideal for Moon, Planetary and Solar observing...

ZWO has released a brand-new FF65APO 0.75× full frame reducer with a four-element optical design. It has a reduction fac...

Coma corrector for Newton telescopes that neither reduces the focal length nor the image field of your telescope...

ZWO has also released a new 3-inch FF80APO 0.76X full frame reducer with a three-element optical design, including one e...

This f/3 Cassegrain focus telescope has an aperture of 350mm and provides a 1,050mm focal length for capturing stun...

The Epsilon 160 extender provides a 1.5 times increase in focal length and is comprised of 7 optical elements in 5 group...

The C-mount adapter with adjustable focal length is designed to install a digital camera in the trinocular tube of a MAG...

The C-mount adapter with adjustable focal length is designed to install a digital camera in the trinocular tube of a MAG...

The C-mount adapter with adjustable focal length is designed to install a digital camera in the trinocular tube of a MAG...

The Takahashi 645 Reducer 0.7X reduces the focal length of the FSQ-130ED telescopes by 0.7X, increasing the speed of the...

Calcium-K module in star diagonal, for using normal astronomical telescopes up to 100mm aperture and up to 1080mm focal...

Calcium-K module in star diagonal, for using normal astronomical telescopes up to 100mm aperture and up to 1620mm focal...

The 645RD QE0.72x focal reducer is a high-performance reducer that further enhances the attractiveness of the FSQ-106EDX...

The Takahashi 645 Reducer-CA 0.72X reduces the focal length of the CCA-250 telescope by 0.72X, increasing the speed of t...

Calcium-K module in straight extension tube, for using normal astronomical telescopes up to 100mm aperture and up to 540...

Calcium-K module in straight extension tube, for using normal astronomical telescopes up to 100mm aperture and up to 108...

Calcium-K module in straight extension tube, for using normal astronomical telescopes up to 100mm aperture and up to 162...

This extender is specific to the hyperbolic Newtonian optical formula of the Takahashi Epsilon-180ED. The focal length i...

The 94 mm apo with the fast focal ratio of f/5.5 is aimed at all amateur astronomers who are interested in a compact, pu...