Dyuner Niels Christopher
(21.05.1839 - 10.11.1914)
Swedish astronomer and physicist.
Born in Billeberg.
He received his doctorate at the University of Lund in 1862, was an observer at the observatory since 1864 and professor of astronomy at Uppsala University since 1888.
Participated in the Swedish expeditions to Svalbard in 1861 and 1864.
He prepared the first materials for the Russian-Swedish expedition of "degree measurement".
In 1863 Düner was one of the founders of the Astronomical Society. In 1861 and 1864 he participated in two Arctic expeditions to Spitsbergen.
From the 1870s he began working in the field of spectroscopy. Previously, he worked on classical astronomy, celestial mechanics and binary stars.From 1867 to 1875, he carried out micrometric measurements of 445 binary and multiple stars in order to calculate the motions of their components.In 1884, he published a catalog of stellar spectra (class III in the Vogel classification system).
Düner was a member of the Royal Swedish Academy of Sciences, the Royal Physiographic Society in Lund, the Royal Society of Sciences in Uppsala and Prussia and the Bavarian Academy of Sciences.
In 1887, he received the Lalande Institute of France Prize, and in 1892, the Royal Society awarded him the Rumford Medal "for spectroscopic studies of stars." A crater on the moon was named in his honor.
Düner was a freemason and a knight of the Swedish knightly order of Charles XIII.
He died in Stockholm.
Cape to the west of Bear Island. The coordinates are 74° 28'N 18° 46'E.
Mountain (Dunérfjellet) in the north of the Swedish island in the Land of King Charles.The coordinates are 78° 48'N 26° 33'E.
The bay on the west bank of the Sturfjord on the frontal part of the Ulfbreen glacier on Sabina Land, the island of Western Spitsbergen. The coordinates are 78° 11.0'N 18° 55.0'E.
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