Specialist
|  | | Gerd Neumann 10 mm Ronchi EyepiecePlease Contact Us This handy new accessory will help you to check the quality of most telescopes. Although all aberrations of an optic can be seen in a star test it requires steady air and lots of experience. The Ronchi star test works well with medium quality seeing and is easier for the beginner to perform a correct analysis of a telescope after only a short period of learning!
|
