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How did Sir David Gill influence astronomy?

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He made observations of the transits of Venus and Mars and investigated the solar parallax. As astronomer royal (1879-1907) at the Cape of Good Hope, he carried out the geodetic survey of Natal and Cape Colony and organized the geodetic survey of Rhodesia (now Zimbabwe). He was a leader in the use of photography in the preparation of star catalogs. His photographic survey of almost half a million stars in the Southern Hemisphere (with J. C. Kapteyn) is known as The Cape Photographic Durchmusterung for the Equinox 1875 (1896-1900).

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Similar questions: What astronomical work did Sir David Gill do? What astronomical discoveries are credited to Sir David Gil? [ Hide these questions ]

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