Large Surface Light Collector at Mt. Hopkins Observatory

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(Left to right) Tucson mayor Jim Corbett, Smithsonian Astrophysical Observatory Director Dr. Fred Whipple (1955-1973), and Rep. Morris K. Udall (D-AZ) stand in front of a 34-foot gamma-ray collector at the Smithsonian Astrophysical Observatory, Mt. Hopkins, Arizona. The large surface light collector, really a mosaic of 252 polished glass mirrors, searches for sources of gamma-ray radiation in the heavens, a feat never attempted before from a ground-based observatory.


  • Whipple, Fred L (Fred Lawrence) 1906-2004
  • Corbett, James Nielson Jr
  • Udall, Morris K
  • Mt. Hopkins Observatory
  • Smithsonian Astrophysical Observatory
  • Smithsonian Institution Office of Public Affairs

Cite as

Smithsonian Institution Archives, Record Unit 371, Box 02, Folder: May 1974, Image No. 92-1773

Repository Loc.

Smithsonian Institution Archives Capital Gallery, Suite 3000, MRC 507; 600 Maryland Avenue, SW; Washington, DC 20024-2520


  • 1968
  • October 23, 1968

Restrictions & Rights

  • No access restrictions Many of SIA's holdings are located off-site, and advance notice is recommended to consult a collection. Please email the SIA Reference Team at
  • No Known Copyright


  • Observatories
  • Gamma ray detectors
  • Gamma ray astronomy




Black-and-white photographs

Local number

SIA RU000371 [92-1773]

Physical description

Gelatin silver prints; 5 x 5;

Full Record

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