Cassegrain reflector

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• Cassegrain reflector — The Cassegrain reflector is a combination of two coaxial reflectors used in Cassegrain telescopes and radio antennas.First developed in 1672 by Laurent Cassegrain, this reflector is a combination of a primary concave mirror and a secondary convex …   Wikipedia

• Cassegrain reflector — ▪ astronomical instrument  in astronomical telescopy, an arrangement of mirrors to focus incoming light at a point close to the main light gathering mirror. The design was proposed in 1672 by French priest Laurent Cassegrain.       In the… …   Universalium

• Cassegrain — may refer to * Cassegrain reflector, a design used in telescopes * Cassegrain (crater), on the Moon * a Belgian canned vegetables producer now part of Bonduelle S.A.Peoples : * Guillaume Cassegrain, a French sculptor * Giovanni Cassegrain, a… …   Wikipedia

• Cassegrain antenna — In telecommunications and radar, a Cassegrain antenna is an antenna in which the feed radiator is mounted at or near the surface of a concave main reflector and is aimed at a convex secondary reflector slightly inside the focus of the main… …   Wikipedia

• Reflector (antenna) — An antenna reflector is a device that reflects electromagnetic waves.It is often a part of an antenna assembly.The most common reflector types are * corner reflector which reflects the incoming signal back to the direction it came from *… …   Wikipedia

• Cassegrain — Saltar a navegación, búsqueda Un telescopio Cassegrain de 50 cm de diámetro. El Cassegrain es un tipo telescopio reflector que utiliza dos espejos. El principal es el que se encuentra en la parte posterior del cuerpo del mismo …   Wikipedia Español

• Telescopio reflector — Telescopio espacial Hubble. Un telescopio reflector es un telescopio óptico que utiliza espejos en lugar de lentes para enfocar la luz y formar imágenes. No se sabe con certeza cuál es el primer telescopio reflector, pero la idea de la… …   Wikipedia Español

• Telescopio de Cassegrain — Un telescopio Cassegrain de 50 cm de diámetro. El Cassegrain es un tipo de telescopio reflector que utiliza dos espejos. El principal es el que se encuentra en la parte posterior del cuerpo del mismo.[1] Genera …   Wikipedia Español

• Reflecting telescope — 24 inch convertible Newtonian/Cassegrain reflecting telescope on display at the Franklin Institute. A reflecting telescope (also called a reflector) is an optical telescope which uses a single or combination of curved mirrors that reflect light… …   Wikipedia

• telescope — /tel euh skohp /, n., adj., v., telescoped, telescoping. n. 1. an optical instrument for making distant objects appear larger and therefore nearer. One of the two principal forms (refracting telescope) consists essentially of an objective lens… …   Universalium

• History of the telescope — The earliest known working telescopes appeared in 1608 and are credited to Hans Lippershey and Zacharias Janssen, spectacle makers in Middelburg, and Jacob Metius of Alkmaar. The design of these early refracting telescopes consisted of a convex… …   Wikipedia