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Found 1 definition: gregorian telescope.

gregorian telescope top

Pos: Noun Phrase

Noun gregorian telescope has 1 senses

   gregorian telescope(n = noun.artifact) cassegrainian telescope - a reflecting telescope that has a paraboloidal primary mirror and a hyperboloidal secondary mirror; light is brought to a focus through an aperture in the center of the primary mirror;
is a kind of reflecting telescope, reflector


gregorian telescope, n. a reflecting telescope in which light reflected from a secondary mirror passes through a hole in a primary mirror.

J. Gregory, Sc. mathematician d. 1675, who devised it


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