The 100-inch telescope, tube tilting to the north and east, Mount Wilson Observatory. Photo by William Miller. Seen from the southwest. One of the steel pedestals is seen under the telescope. A curved ladder arches above the telescope tube, to its left. A small portion of the interior balcony is seen in the foreground; the interior walls of the observatory dome are seen in the background. Image courtesy of the Observatories of the Carnegie Institution for Science Collection at the Huntington Library, San Marino, California.
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