Matsko Janos Matthias

* Bratislava, December 5, 1721 – † Kassel, November 19, 1796 / mathematician, astronomer ; ; After graduating from the Lutheran Lyceum in Bratislava, he went to Jena in 1741, and two years later he enrolled at the University of Göttingen, where he was a student of János András Segner. He received his doctorate in Halle, then taught in several cities (including Thorn and Rinteln), and in 1769 he was invited to become director of the Kassel Observatory. He reorganized the outdated observatory, observed solar and lunar eclipses, and dealt with positional astronomy. ; ; His main works: ; Generaliores meditationes de machinis hydraulicis, 1761, ; Anzeige des bevorstehenden Durchgangs der Venus durch die Sonne, 1769, ; Observationes astronomicae. Program, 1770–1781, ; Dissertatio de mola in usus fabricae vasorum porcellaneorum exstructa, 1772, ; Beobachtung des Saturnus am 20. October 1789., 1789