astrograph
/ˈastrə(ʊ)ɡrɑːf/ /ˈastrə(ʊ)ɡraf/noun
1 Astronomy. A device for determining the positions of stars; especially a telescope used for photographing the night sky, specifically one using wide-angle photographs to detect celestial objects or to determine their position.
2 Aeronautics and Nautical. A navigational device that projects a set of curves of equal altitude for a given star on to a navigational chart or plotting sheet. Now historical.
Origin
Mid 19th century; earliest use found in The Literary Gazette. From astro- + -graph.