Coma corrector 0.73x 2"

A coma corrector is a corrective lens for Newtonian telescopes. This type of telescope can cause distortion of the image at the edge of the field of view, making stars look like little comets. This aberration is therefore called 'coma'.

This reducer and coma corrector was developed by H. Ackermann, a well-known optician from the USA.

It can be used with all Newtonian telescopes from f/3.5 to f/8. The only requirements are a 2" connection and sufficient working distance (back focus).

The corrector requires a focus distance of 85 millimetres from the 2" barrel of the focuser. Almost all Newtonian telescopes with a 2" connection meet this requirement.

TS Optics is a brand of Teleskop-Service.