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Ritchey Reflecting Telescope

Ritchey Reflecting Telescope

This telescope, with a 24-inch aperture, silvered-glass primary mirror, was designed for astronomical photography, and made by George Willis Ritchey, head of the instrument shop at the Yerkes Observatory in Williams Bay, Wisconsin. Starting in 1900, Ritchey used it to take unprecedented images of nebulas, novas and other astronomical objects. Ritcheylater made similar but much larger telescopes for the Mount Wilson Observatory in California.
Ref: D. J. Mills, "George Willis Ritchey and the Development of Celestial Photography," American Scientist 54 (1966): 64-94.
Currently on loan
Object Name
reflecting telescope
date made
ca 1900
Ritchey, George Willis
place made
United States: Wisconsin, Williams Bay
aperture: 24 in; 60.96 cm
ID Number
accession number
catalog number
Credit Line
Yerkes Observatory
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Medicine and Science: Physical Sciences
Science & Mathematics
Data Source
National Museum of American History
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