Argunov–Cassegrain telescope
Illustration — Light path in an Argunov–Cassegrain telescope The Argunov–Cassegrain telescope is a catadioptric telescope design first introduced in 1972 by P. 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 furthest from the primary mirror).
Also recorded as Argunov Cassegrain telescope
Argunov–Cassegrain telescope
- Field
- catadioptric telescope
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Illustration — Light path in an Argunov–Cassegrain telescope The Argunov–Cassegrain telescope is a catadioptric telescope design first introduced in 1972 by P. 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 furthest from the primary mirror).
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wikidata · Q4789775 · wikipedia · Argunov–Cassegrain telescope
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Argunov systems only employ spherical surfaces and avoid the practical difficulties of making and testing aspheres. However, this benefit is marginal, as it is almost as difficult to make a true zone-free sphere of precise radius of curvature as it is to make an aspheric surface with comparable precision. Furthermore, since multiple surfaces are involved, creating a design with good aberration correction can become very complicated.
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- “Argunov–Cassegrain telescope”, English Wikipedia, consulted as further reading
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- Wikidata, structured authority record Q4789775: Argunov–Cassegrain telescope
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Argunov–Cassegrain telescope is connected to 1 other published record in the VALÉORINE Encyclopedia.
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The Encyclopedia exists whether or not anything is for sale. Corrections are recorded rather than overwritten, and every version of this record is kept. Published 16 August 2026.
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