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]

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