astroscope
/ˈastrə(ʊ)skəʊp/noun
Originally: any of several instruments for assisting an observer in identifying stars and constellations, specifically one consisting of a pair of inscribed cones. In recent use: an instrument for observing stars; an astronomical telescope.
Origin
Late 17th century; earliest use found in Edward Sherburne (d. 1702), translator and poet. From astro- + -scope.
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