Construction of the 100-inch telescope observatory building, Mount Wilson Observatory, as seen from the 150-foot telescope tower. The steel framing of the domes roof is partially complete. The steel sheathing is also nearly complete. Scaffolding surrounds the concrete foundation of the building. Trees surround the construction area. The San Gabriel Mountains are in the background. Image courtesy of the Observatories of the Carnegie Institution for Science Collection at the Huntington Library, San Marino, California.
Construction--California Observatory domes--Design and construction Framing (Building) Steel, Structural Sheathing (Building Materials) Girders Scaffolding Foundations Trees San Gabriel Mountains (Calif.) Mount Wilson Observatory Astronomical observatories Observatories Photographic prints. (gmgpc)
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