Construction of the 100-inch telescope observatory building, as seen from the 150-foot telescope tower, Mount Wilson Observatory. Photograph was taken with a 24' lens. The steel framing for the observatory dome is visible, with steel sheathing below it. Scaffolding surrounds the concrete foundation. Trees surround the construction site. 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.
Observatory domes--Design and construction Framing (Building) Steel, Structural Sheathing (Building Materials) Mount Wilson Observatory Astronomical observatories Observatories Construction--California Trees San Gabriel Mountains (Calif.) Photographic prints. (gmgpc)
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