The Collaborative International Dictionary of English v.0.48:

Telespectroscope \Tel`e*spec"tro*scope\, n. [Gr. ? far off + E.
   spectroscope.] (Astron.)
   A spectroscope arranged to be attached to a telescope for
   observation of distant objects, as the sun or stars.
   --Lockyer.
   [1913 Webster]