Yerkes Observatory

Yerkes Observatory

Yerkes Observatory
Rising Floor 4
II: Buildings and Grounds
The wooden floor under the Yerkes Observatory 90-foot dome measures seventy-five feet across, and can be raised and lowered twenty-three feet, a range which allows the refractor telescope to point at objects near the horizon or at the zenith.
Refracting telescopes | Floors (Surface elements) | Astronomical observatories
Contact prints; 3.5 x 5.2 cm
373 W. Geneva Street | Williams Bay, Wisconsin
Archival Photographic Files
University of Chicago Library, Special Collections Research Center

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