Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun cassegrainian_telescope

1 sense of cassegrainian telescope

Sense 1
Cassegrainian telescope, Gregorian 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")