Sun
| Title | Sun |
| View | Solar Activity 79:36 (2008-003) |
| Series | VI: Yerkes Observatory |
| Description | Entire solar disk with large and many smaller sunspots. Comparison of a direct photograph and spectroheliogram. |
| Subject Terms | Sun--Surface | Sunspots | Solar phenomena | Spectroheliograms | Astronomical photography |
| Photographer | Calvert, Mary Ross, 1884-1974 |
| Photograph Date | 1917-08-12 |
| Physical Format | Lantern slides; 3.4 x 7.1 cm |
| Collection | Archival Photographic Files |
| Repository | University of Chicago Library, Special Collections Research Center |
| Image Identifier | apf6-02306 |
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