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Comet 1892a, Swift, May 1892. Artist: Max WolfComet 1892a, Swift, May 1892. From a negative photograph by German astronomer Dr Max Wolf (1863-1932). The image was not converted to a positive to avoid any loss of detail
Long exposure of star field showing track of the asteroid Sappho against points of stars, 1892. Artist: Max WolfLong exposure of star field showing track of the asteroid Sappho against points of stars, 1892. Sapphos location is identified by the arrows at the top and the left edges of the picture
