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
... station[?] Essex Road station[?] Drayton Park station[?] References J. E. Connor, London's Disused Underground Stations, Capital Transport, 2001 (2 ...