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
... Contents Royalist The noun or adjective, Royalist, can have several shades of meaning. At its simplest, it refers to an adherent of ...