مرسام فلكي

Also known as astrographic camera

thumb|150px|A , f/5.3 astrograph at Lowell Observatory (a refractor with a 3 element [[Cooke triplet lens) used in the discovery of Pluto.]] thumb|150px|A double astrograph consisting of two astrographs and a central guide scope on display at Landessternwarte Heidelberg-Königstuhl observatory. thumb|The Bruce double astrograph at the Landessternwarte Heidelberg-Königstuhl observatory. thumbnail|This is a modern amateur Newtonian telescope|Newtonian astrograph, specifically designed for astrophotography.