Cassegrainian telescope


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Related to Cassegrainian telescope: Newtonian telescope, Cassegrain reflector
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Noun1.Cassegrainian telescope - a reflecting telescope that has a paraboloidal primary mirror and a hyperboloidal secondary mirrorCassegrainian 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
reflecting telescope, reflector - optical telescope consisting of a large concave mirror that produces an image that is magnified by the eyepiece; "Isaac Newton invented the reflecting telescope in 1668"