aperture corrector

См. также в других словарях:

• Meniscus corrector — Albert Bouwers 1941 catadioptric telescope with a concentric meniscus corrector A meniscus corrector is a negative meniscus lens that is used to correct spherical aberration in image forming optical systems such as catadioptric telescopes. They… …   Wikipedia

• Maksutov telescope — A 150mm aperture Maksutov Cassegrain telescope. The Maksutov is a catadioptric telescope design that combines a spherical mirror with a weakly negative meniscus lens in a design that takes advantage of all the surfaces being nearly spherically… …   Wikipedia

• Catadioptric system — A 150 mm aperture catadioptric telescope (Maksutov) A catadioptric optical system is one where refraction and reflection are combined in an optical system, usually via lenses (dioptrics) and curved mirrors (catoptrics). Catadioptric… …   Wikipedia

• Korrektor (Teleskop) — Ein Korrektor ist eine spezielle Anordnung von Linsen oder Spiegeln, die Abbildungsfehler eines Fernrohrobjektivs vermindert oder Abbildungsfehler durch die atmosphärische Dispersion (chromatische Aberration) beseitigt. Es gibt verschiedene… …   Deutsch Wikipedia

• Meade Instruments — For other uses, see Meade (disambiguation). Meade Instruments Corporation Type Public (NASDAQ: MEAD) Founded 1972 …   Wikipedia

• Questar Corporation — Infobox Company company name = Questar Corporation company company type = Private company slogan = foundation = 1950 location = New Hope, Pennsylvania, USA key people = Donald J. Bandurick, President and CEO num employees = industry =… …   Wikipedia

• Transmission electron microscopy — A TEM image of the polio virus. The polio virus is 30 nm in size.[1] Transmission electron microscopy (TEM) is a microscopy technique whereby a beam of electrons is transmitted through an ultra thin specimen, interacting with the specimen as it… …   Wikipedia

• Lurie Houghton — The Houghton telescope is a catadioptric telescope. Instead of the fairly hard to make Schimdt and Maksutov corrector lenses, the corrector for the Houghton (or the Lurie) is relatively easy to make. It consists of two lenses, a positive and a… …   Wikipedia

• Schmidt-Cassegrain telescope — The Schmidt Cassegrain is a catadioptric telescope. It combines a folded optical path with a corrector plate to make a compact astronomical instrument. Invention and DesignThe Schmidt Cassegrain is a design based on Bernhard Schmidt s Schmidt… …   Wikipedia

• Wright Camera — In 1935, just a few years after the introduction of the Schmidt camera, Franklin Wright (Berkley, California) presented his short alternative to the original arrangement. He placed Schmidt corrector at the focal plane, and had the mirror… …   Wikipedia

• Newtonian telescope — The Newtonian telescope is a type of reflecting telescope invented by the British scientist Sir Isaac Newton (1642–1727), using a concave primary mirror and a flat diagonal secondary mirror. Newton’s first reflecting telescope was completed in… …   Wikipedia