Refractors[?] (Dioptrics[?])
Reflectors (Catoptrics[?])
Cassegrain[?] (Catadioptrics[?]) (also know as Gregorian Telescope)
These types can be mounted on different types of mounts.
Altazimuth (ALT-AZ) Mounts
... words are found in many present-day languages. For instance the Thai language contains many loan words[?] from Sanskrit. Table of contents 1 ...