Astronomical Instrument, South Yard
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Creator: Unknown
Form/Genre: Photographic print
Date: c. 1900
Citation: Smithsonian Institution Archives, Record Unit 95, Box 37A, Folder: 8
An image of a heliostat, a sophisticatedly mounted motor driven single flat mirror that take sunlight and feeds it into one of the APO buildings for analysis used by the Smithsonian Astrophysical Observatory is inside the wooden fence, which surrounds the Observatory located in the South Yard. The west side of the Arts and Industries Building is visible in the background.
Historic Images of the Smithsonian
Smithsonian Institution Archives, Record Unit 95, Box 37A, Folder: 8
Institutional History Division, Smithsonian Institution Archives, 600 Maryland Avenue, S.W., Washington, D.C. 20024-2520, SIHistory@si.edu
c. 1900
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12499 or AI-12499
Color: Black and White; Size: 10w x 8h; Type of Image: Exterior; Medium: Photographic print