Choosing and Using 2" Diagonals for Schmidt-Cassegrain and Maksutov-Cassegrain Telescopes
OPTICAL TELESCOPES Optical telescopes gather the visible light to observe distant objects. There are Three Basic Types of Optical Telescopes A.Refracting. - ppt download
Maksutov-Cassegrain telescope
The Ultimate Guide to Celestron Optical Tubes | Celestron
Schmidt-Cassegrain vs Maksutov-Cassegrain | Scope The Galaxy
ESO 1-metre Schmidt telescope | ESO
vik dhillon: phy217 - catadioptric telescopes
The Ultimate Guide to Celestron Optical Tubes | Celestron