SOLD Spectrum Analysis, Specral Analysis, Antique Chromolithograph, Matted, A.K. Johnston, 1877
Antique chromolithograph titled, "Spectrum Analysis Applied to the Sun and Stars," 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 top and bottom margin, center crease as issued.