Refraction Parallax Phases of the Moon, Antique Astronomy Print, Johnston 1877
Antique chromolithograph showing refraction, parallax, aberrations, phases of the moon, etc. from Alexander Keith Johnston's, "School Astronomical Atlas," 1877. The plate measures 10.5 x 13.25" including margins and is matted in an acid-free, standard 16 x 20" cream color mat. The sheet is in very good condition with light staining in bottom margin and center crease, as issued.