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coelostat

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Definitions (2)

American Heritage Dictionary

Century Dictionary

GNU Webster's 1913 (1)

an optical instrument used to follow the path of a celestial body and reflect its light into a telescope; it has a movable and a fixed mirror.

WordNet (1)

optical device used to follow the path of a celestial body and reflect its light into a telescope; has a movable and a fixed mirror

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Examples (3)

The "coelostat," in the form given to it by Professor Turner, has proved an invaluable adjunct to eclipse-equipments. — A Popular History of Astronomy During the Nineteenth Century Fourth Edition
Turner, polariscopic coronal photography, 189; employment of coelostat, 190, 438; stationary radiants, 341 — A Popular History of Astronomy During the Nineteenth Century Fourth Edition
a 61-1/2-foot horizontal "coelostat." — A Popular History of Astronomy During the Nineteenth Century Fourth Edition

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