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FRANZ FRIEDRICH ERNST BRUNNOW (1821-1...

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Originally appearing in Volume V04, Page 685 of the 1911 Encyclopedia Britannica.
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FRANZ See also:FRIEDRICH See also:ERNST See also:BRUNNOW (1821-1891)  , See also:German astronomer, *as See also:born in See also:Berlin on the 18th of See also:November 1821 . Between the ages of eight and eighteen he attended the See also:Friedrich-Wilhelm gymnasium . In 1839 he entered the university of Berlin, where he studied See also:mathematics, See also:astronomy and physics, as well as See also:chemistry, See also:philosophy and See also:philology . After graduating as Ph.D. in 1843, he took an active See also:part in685 astronomical See also:work at the Berlin See also:observatory, under the direction of J . F . See also:Encke, contributing numerous important papers on the orbits of comets and See also:minor See also:planets to the Astronomische Nachrichten . In 1847 he was appointed director of the Bilk observatory, near See also:Dusseldorf, and in the following See also:year published the well-known Memoire sur la comete elliptique de De See also:Vico, for which he received the See also:gold See also:medal of the See also:Amsterdam See also:Academy . In 1851 he succeeded J . G . See also:Galle as first assistant at the Berlin observatory, and accepted in 1854 the See also:post of director of the new observatory at See also:Ann Arbor, See also:Michigan, U.S.A . Here he published, 1858–1862, a See also:journal entitled Astronomical Notices, while his tables of the minor planets See also:Flora, See also:Victoria and See also:Iris were severally issued in 1857, 1859 and 1869 . In 186o he went, as See also:associate director of the observatory, to See also:Albany, N .

Y.; but returned in 1861 to Michigan, and threw himself with vigour into the work of studying the astronomical and See also:

physical constants of the observatory and its See also:instruments . In 1863 he resigned its direction and returned to See also:Germany; then, on the See also:death of See also:Sir W . R . See also:Hamilton in 1865, he accepted the post of See also:Andrews See also:professor of astronomy in the university of See also:Dublin and astronomer-royal of See also:Ireland . His first undertaking at the Dublin observatory was the erection of an See also:equatorial See also:telescope to carry the See also:fine See also:object-See also:glass presented to the university by Sir See also:James See also:South; and on its completion he began an import-See also:ant See also:series of researches on stellar See also:parallax . The first, second and third parts of the Astronomical Observations and Researches made at Dunsink contain the results of these labours, and include discussions of the distances of the stars a Lyrae, v Draconis, Groombridge 183o, 85 Pegasi, and See also:Bradley 3077, and of the planetary nebula H. iv . 37 . In 1873 the observatory, on Dr See also:Brunnow's recommendation, was provided with a first-class transit-circle, which he proceeded to test as a preliminary to commencing an extended See also:programme of work with it, but in the following year, in consequence of failing See also:health and eyesight, he resigned the post and retired to See also:Basel . In 188o he removed to See also:Vevey, and in 1889 to See also:Heidelberg, where he died on the zoth of See also:August 1891 . The permanence of his reputation was secured by the merits of his Lehrbuch der spharischen Astronomic, which were at once and widely appreciated . In 186o part i. was translated into See also:English by See also:Robert See also:Main, the See also:Radcliffe observer at See also:Oxford; Brunnow himself published an English version in 1865; it reached in the See also:original a 5th edition in 1881, and was also translated into See also:French, See also:Russian, See also:Italian and See also:Spanish . See See also:Month .

Notices See also:

Roy . See also:Asti . Society, lii . 23o; J . C . See also:Poggendorff's Biog . Lit . Handworterbuch, Bd. iii . ; Nature, xliv . 449 .

End of Article: FRANZ FRIEDRICH ERNST BRUNNOW (1821-1891)
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