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zenith telescope
(astronomy) A telescope that can point vertically at the zenith
zenith telescopes
plural of zenith telescope
telescopic sights
plural of telescopic sight
transit telescopes
transit telescope
Synonym of transit instrument
Schmidt telescope
(astronomy) A telescope, having a wide field of view, comprising a thin aspheric lens and a large concave mirror
radio telescope
(astronomy) A device for observing astronomical sources of radio waves, normally having one or more large parabolic dishes.
dialytic telescopes
dialytic telescope
An achromatic telescope in which the coloured dispersion produced by a single object lens of crown glass is corrected by a smaller concave lens, or combination of lenses, of high dispersive power, placed at a distance in the narrower part of the converging cone of rays, usually near the middle of the tube.