Cassegrain telescope
[ kas-uh-greyn ]
/ ˈkæs əˌgreɪn /
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noun Astronomy.
a reflecting telescope in which the light, passing through a central opening in the primary mirror, is brought into focus a short distance behind it by a secondary mirror.
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Also called Cas·se·grain·i·an tel·escope [kas-uh-grey-nee-uhn]. /ˌkæs əˈgreɪ ni ən/.
Origin of Cassegrain telescope
1805–15; named after N. Cassegrain, 17th-century French scientist, its inventor
Words nearby Cassegrain telescope
cassata, cassation, Cassatt, Cassatt, Mary, cassava, Cassegrain telescope, Cassel, Casselberry, Cassel brown, Cassel yellow, cassena
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
Example sentences from the Web for Cassegrain telescope
British Dictionary definitions for Cassegrain telescope
Cassegrain telescope
/ (ˈkæsɪˌɡreɪn) /
noun
an astronomical reflecting telescope in which incident light is reflected from a large concave paraboloid mirror onto a smaller convex hyperboloid mirror and then back through a hole in the concave mirror to form the image
Word Origin for Cassegrain telescope
C19: named after N. Cassegrain, 17th-century French scientist who invented it
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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