Dodge, Mary Mapes, 1830-1905 · [New York : Scribner & Co.] · leaf 438
pe. Withit he tookover fifteenhundred pho-tographs of the heavens; and the instrument isstill in use in Harvard Observatory. The telescope not only reveals more thancan be seen by the eye alone, but the sensitivefilm surpasses the power of the eye when aidedby the telescope, for the camera records… … m^.MEW AKD. (From photograph by K. Greeger.) and thus that which is invisible to the eye be-comes visible on the plate. In celestial photography the camera is keptmoving during the taking of a picture. Theexposure sometimes lasts several hours; and ifthe camera were stationary the motion of the 954…
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