Schmidt camera

World English Dictionary
Schmidt telescope or Schmidt camera
a catadioptric telescope designed to produce a very sharp image of a large area of sky in one photographic exposure. It incorporates a thin specially shaped glass plate at the centre of curvature of a short-focus spherical primary mirror so that the resulting image, which is focused on a photographic plate, is free from spherical aberration, coma, and astigmatism
[C20: named after B. V. Schmidt (1879--1935), Estonian-born German inventor]
Schmidt camera or Schmidt camera
[C20: named after B. V. Schmidt (1879--1935), Estonian-born German inventor]

Collins English Dictionary - Complete & Unabridged 10th Edition
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schmidt camera

reflecting telescope that has plate that corrects for aberration so a wide area of sky can be photographed [syn: Schmidt telescope
WordNet® 3.0, © 2006 by Princeton University.
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