MEDLER Johann Heinrich (Madler Johann Heinrich)

(1794-1874)
Born May 29, 1794 in Berlin. He studied at Berlin University of I. Bode and J. Encke, in 1836 the place was an assistant in the observatory of the University. In 1840 he became a professor of Dorpat (now Tartu) University, and director of the University Observatory, succeeding W. von Struve. In 1866 he resigned and returned to Germany.
The first work Medlera devoted to studying the surface of the Moon and Mars. In 1834-1836, together with V. Ber Medler explored the moon. Together they accounted for the detailed map of the Moon and published The Moon (Der Mond). Analyzing the motion of stars, Medler launched in 1846 the theory of 'central sun', according to which the Pleiades star cluster is the gravitational center of the Milky Way. Observed major planets, especially Venus and Mars.

Medler died in Hanover, March 14, 1874.