Sun
| Title | Sun |
| View | Solar Activity 78:40 (2008-003) |
| Series | VI: Yerkes Observatory |
| Description | Sunspot of 7 July 1903 showing low-level calcium vapor. |
| Subject Terms | Sun--Surface | Sunspots | Solar phenomena | Spectroheliograms |
| Photographer | Hale, George Ellery, 1868-1938; Ellerman, Ferdinand, 1869-1940 |
| Photograph Date | 1903-07-07 |
| Physical Format | Lantern slides; 3.6 x 4.9 cm |
| Collection | Archival Photographic Files |
| Repository | University of Chicago Library, Special Collections Research Center |
| Image Identifier | apf6-02278 |
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