Sun

Sun
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Sun
Astronomical Photography 72:306 (2008-003)
VI: Yerkes Observatory
Sun's disk, a comparison of a direct photograph and high-level calcium spectroheliogram, 12-13 February 1907.
Sun--Surface | Spectroheliograms | Astronomical photography
Fox, Philip, 1878-1944
1907-02-12/1907-02-13
Glass plate negatives; 10.4 x 21.5 cm
Archival Photographic Files
University of Chicago Library, Special Collections Research Center
apf6-01984

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