Synonyms to zenith tube

telescope, Cassegrainian telescope, Newtonian telescope, OAO, OSO, abbreviate, abridge, abstract, astronomical observatory, astronomical telescope, binoculars, bob, boil down, capsulize, clip, coelostat, compress, concertina, condense, contract, coronagraph, coronograph, crop, crush, curtail, cut, cut back, cut down, cut off short, cut short, digest, dock, elide, epitomize, field glass, foreshorten, glass, heliostat, mow, nip, observatory, opera glasses, orrery, planetarium, poll, pollard, precis, prune, radar telescope, radio observatory, radio telescope, reap, recap, recapitulate, reduce, reflector, refractor, retrench, scope, shave, shear, shorten, snub, spectrograph, spectroheliograph, spectrohelioscope, spectroscope, spy glass, spyglass, squash, stunt, sum up, summarize, synopsize, take in, terrestrial telescope, trim, truncate, zoom binoculars