Sun
| Title | Sun |
| View | Solar Activity 78:6 (2008-003) |
| Series | VI: Yerkes Observatory |
| Description | Twenty-four-hour development of sunspot. Dot (lower left) indicates Earth's comparative size. |
| Subject Terms | Sun--Surface | Sunspots | Solar phenomena | Astronomical photography |
| Photographer | Calvert, Mary Ross, 1884-1974 |
| Photograph Date | 1917-08 |
| Physical Format | Lantern slides; 7.0 x 5.8 cm |
| Collection | Archival Photographic Files |
| Repository | University of Chicago Library, Special Collections Research Center |
| Image Identifier | apf6-02291 |
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