cassegrainian telescope

Noun
  1. 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 (synset 102981937)
    is a type of: reflecting telescope, reflector - optical telescope consisting of a large concave mirror that produces an image that is magnified by the eyepiece
    same as: gregorian telescope

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