Found 2 items, similar to coelostat.
English → English (WordNet) Definition: coelostat coelostat n : 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
English → English (gcide) Definition: coelostat 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] ||