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From The Collaborative International Dictionary of English v.0.44 [gcide]: coelostat \coe"lo*stat\ n. 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 1.5] || From WordNet (r) 2.0 [wn]: coelostat noun: 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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