Assembling of the Hooker telescope tubes, Mount Wilson Observatory. The second section of the telescope tube is in place, and the third section is seen at the left, ready to be hoisted. Two (2) unidentified workmen sit on top of the second tube section. 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.
Reflecting telescopes Telescopes Large astronomical telescopes Astronomical instruments Hoisting machinery Mount Wilson Observatory Steel, Structural Construction workers--United States Observatory domes Interiors Photographic prints. (gmgpc)
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