Maksutov Cassegrain

Celestron CGEM II 700 Maksutov Cassegrain Optical Design: Maksutov-Cassegrain Aperture: 180mm (7.08") Focal Length: 2700mm (106.3") Focal Ratio: f/15 Focal Length of Eyepiece 1: 28mm (1.1") 2" eyepiece Magnification of Eyepiece...