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coelostat |
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coelostat [ˈsiːləˌstæt]
n
(Astronomy) an astronomical instrument consisting of a plane mirror mounted parallel to the earth's axis and rotated about this axis once every two days so that light from a celestial body, esp the sun, is reflected onto a second mirror, which reflects the beam into a telescope Compare siderostat [C19 coelo-, from Latin caelum heaven, sky + -stat] ThesaurusLegend: Synonyms Related Words Antonyms
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Then Anthony Cook, the landmark's official astronomical observer, dialed in the tracking coelostat despite a lingering marine layer that threatened to obscure the view. |
coelostat |
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