HyperDic: coelostat

English > 1 sense of the word coelostat:
NOUNartifactcoelostatoptical device used to follow the path of a celestial body and reflect its light into a telescope
English > coelostat: 1 sense > noun 1, artifact
Meaningoptical device used to follow the path of a celestial body and reflect its light into a telescope; has a movable and a fixed mirror.
Broaderoptical deviceA device for producing or controlling light

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