On some methods and results in direct photography with the 60-inch reflecting telescope of the Mount Wilson Solar Observatory
By: by G.W. Ritchey
Series: Contributions from the Mount Wilson Solar Observatory -- no. 47
Publisher: Carnegie Institution of Washington
Published: 1910
Place of publication: Washington, D.C
Language: eng
Number of pages: 10
Subjects: Astronomical photography
Notes: Cover-title.

At head of title: Carnegie Institution of Washington.

Reprinted from the Astrophysical Journal, vol. XXXII, July 1910.