refractor

from The Collaborative International Dictionary of English v.0.48

Refractor \Re*fract"or\ (r?-fr?kt"?r), n.
   Anything that refracts; specifically: (Opt.) A refracting
   telescope, in which the image to be viewed is formed by the
   refraction of light in passing through a convex lens.
   [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

22 Moby Thesaurus words for "refractor":
      Cassegrainian telescope, Newtonian telescope, OAO, OSO,
      astronomical observatory, astronomical telescope, coelostat,
      coronagraph, coronograph, heliostat, observatory, orrery,
      planetarium, radar telescope, radio observatory, radio telescope,
      reflector, spectrograph, spectroheliograph, spectrohelioscope,
      spectroscope, telescope

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