Yerkes Observatory Buildings, Instruments, Equipment, Grounds
| Title | Yerkes Observatory Buildings, Instruments, Equipment, Grounds |
| View | Optical Shop 67:1200 (2008-003) |
| Series | VI: Yerkes Observatory |
| Description | In the Yerkes Observatory Optical Shop, a side view of the glass speculum that became the mirror for the Mount Wilson Observatory 60-inch reflector telescope. Cast by the Saint-Gobain Glassworks in France, William Hale purchased the speculum as a gift for his son, Yerkes Observatory director George Ellery Hale. |
| Subject Terms | Hale, George Ellery, 1868-1938 | Hale, William, born 1836 | Compagnie de Saint-Gobain | Mirrors | Grinders (Tools) | Reflecting telescopes |
| Photograph Date | 1898-05-04 |
| Physical Format | Glass plate negatives; 24.5 x 19.5 cm |
| Location | 373 West Geneva Street | Williams Bay, Wisconsin |
| Campus Grid | Y01 |
| Collection | Archival Photographic Files |
| Repository | University of Chicago Library, Special Collections Research Center |
| Image Identifier | apf6-01638 |
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