five-foot spectroheliograph of the Solar Observatory
By: by George E. Hale and Ferdinand Ellerman.
Contributors: Ellerman, Ferdinand, 1869-; Carnegie Institution of Washington.
Series: Contributions from the Solar Observatory, Mt. Wilson, California -- no. 7
Publisher: s.n.
Published: 1906
Place of publication: [Chicago
Language: eng
Number of pages: 10
Subjects: Spectroheliograph.
Notes: At head of title: "Carnegie Institution of Washington".

From cover: "Reprinted from the Astrophysical Journal, Vol. XXIII, pp. 54-63, January 1906".

Title from cover.