Yerkes Observatory

Yerkes Observatory

Yerkes Observatory
Mars 1
II: Buildings and Grounds
Mars, photographed by astronomer Edward Emerson Barnard with the Yerkes Observatory 40-inch refractor telescope, 1909. Above: Syrtis Major region, September 29, 3: 45 (UT); Below: Same; 4: 25 (UT). Each exposure is the superposition of three to five original frames. This reduces grain and brings out fine halftones.
Mars (Planet) | Mars surface | Refracting telescopes | Astronomical photography
Barnard, Edward Emerson, 1857-1923
Photographic prints; 16.7 x 13.8 cm
Archival Photographic Files
University of Chicago Library, Special Collections Research Center

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