2048x1080: An improvement upon the original M1A1 "stars" background image, this is a slight upgrade of the excellent "Hi-Rez Landscape (Stars)" file uploaded by Phil Demkeston on the Lh'owon Ar'kives (minor smears and hazing were repaired).
You can, of course, use this same DDS file in any version, flavor, or scenario of Aleph One by moving the file to the appropriate folder per A1 flavor.