Argunov Cassegrain telescope
Код 2534802
- ISBN: 978-5-5127-1020-3
Код 2534802
High Quality Content by WIKIPEDIA articles! The Argunov Cassegrain telescope is a catadioptric telescope design first introduced in 1972 by P.P. Argunov. All optics are spherical, and the classical Cassegrain secondary mirror is replaced by a sub-aperture secondary corrector group consisting of three air-spaced elements, two lenses and a Mangin mirror (the element farthest from the primary mirror). Argunov systems only employ spherical surfaces and avoid the practical difficulties of making and...
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