McDonald Observatory
| Title | McDonald Observatory |
| View | Mirror Preparation 1 |
| Series | II: Buildings and Grounds |
| Description | Workers at the Corning Glass Works in Corning, New York pour the 82-inch mirror for the McDonald Observatory telescope. The molten mass of Pyrex glass was cooled under a hood for almost six months, a process designed to prevent strains in the finished mirror. |
| Subject Terms | Glassworkers | Mirrors--Design and construction | Reflecting telescopes | Manufacturing processes | Corning Glass Works |
| Photographer | Warner & Swasey Company |
| Photograph Date | 1939 |
| Physical Format | Photographic prints; 19.2 x 23.9 cm |
| Location | Corning, New York |
| Collection | Archival Photographic Files |
| Repository | University of Chicago Library, Special Collections Research Center |
| Image Identifier | apf2-05086 |
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