天体照相双合透镜

astrographic catalog【天】;photographic star catalog【天】;photographic star catalogue【天】

astrographic chart【天】;photographic chart【天】;photographical star atlas【天】

astrographic【天】

astrographic refractor【天】;photographic refractor【天】

astrographic camera

airborne astrographic camera

astrographic camera

astrographic position【天】