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Nasmyth telescope

(Nasmyth-Cassegrain)
(type of reflecting telescope with secondary and tertiary mirrors)

A Nasmyth telescope is a reflector telescope with a secondary mirror reflecting straight back toward the primary and a tertiary mirror reflecting the light at a right angle before it reaches the primary. This is useful for handling heavy or bulky instruments, and some major telescopes can be configured in this manner, including:


(telescope type,reflector)
http://en.wikipedia.org/wiki/Nasmyth_telescope

Referenced by:
coudé focus telescope
reflector telescope

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