Yerkes Observatory

Yerkes Observatory

Yerkes Observatory
40-inch Refractor Telescope 11
II: Buildings and Grounds
Eye-end of the Yerkes Observatory 40-inch refractor telescope. The photoelectric parallax scanner which measures parallaxes and proper motions is attached.
Refracting telescopes | Cameras (Photographic equipment) | Measuring instruments | Proper motion | Stars
Tapscott, Joseph; Yerkes Observatory
Photographic prints; 19.4 x 22.3 cm
373 W. Geneva Street | Williams Bay, Wisconsin
Archival Photographic Files
University of Chicago Library, Special Collections Research Center

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