Inside Out Library · Explore

Annals of the Astrophysical Observatory of the Smithsonian Institution (1900)

Washington : Government printing office · leaf 193

An illustration from Annals of the Astrophysical Observatory of the Smithsonian Institution, 1900, leaf 193 — Annals Astrophysical Observatory, Volume IS. Plate XVIII. Cloud Sea, Mount Wilson.

Infrared spectra · Solar radiation

Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.

More pictures from Annals of the Astrophysical Observatory of the Smithsonian Institution

More like this