Paul Kempf information

Paul Friedrich Ferdinand Kempf (3 June 1856 – 16 February 1920) was a German astronomer.

In 1878 was awarded a doctorate in astronomy from the Humboldt University of Berlin with a thesis titled Untersuchungen über die Ptolemäische Theorie der Mondbewegung (Investigations into the Ptolemaic theory of lunar movement).^[1] On 1 July the same year he became an assistant at the Astrophysical Institute Potsdam.^[2]

Early in his career as an astronomer he aided German solar astronomer Gustav Spörer in his work to observe sun spot activity.^[3] Kempf joined an 1882 German expedition to Chile to observe the transit of Venus across the Sun.^[4] He was then part of solar eclipse missions to Russia in 1887 and 1914.^[3] In 1886, he was promoted to full astronomer and began a collaboration with his friend, German astronomer Gustav Müller to perform a massive survey of northern stars with magnitudes brighter than 7.5 found in the Bonner Durchmusterung. This work was published between 1894 and 1906, with the completed so-called Potsdamer Photometrische Durchmusterung appearing in 1907.^[5]^[6] (Full name: "Photometrische Durchmusterung des Nördlichen Himmels, anthaltend alle sterne der B.D. bis zur Grösze 7.5"^[7]

In 1894 he was named as the principal observer at Potsdam.^[8] Kempf became secretary to the Astronomische Gesellschaft in 1914, then added the job of treasurer, holding both posts until his death.^[3] He was survived by his wife, Helene Marie Emilie Kempf, who became one of the first two female members of the Astronomische Gesellschaft in 1921.^[9]

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Paul Kempf information

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