Regiomontanus latinisiert, = Königsberger, eigentlich Johannes Müller
Regiomontanus, engraving by G. W. Knorr
Regiomontanus (latinized form of Königsberger, originally Johannes Müller), b. Königsberg (Franken, Germany), June 6, 1436, d. Rome (Italy), July 6, 1476, mathematician, astronomer. Studied under Georg von Peuerbach in Vienna, translated the "Almagest" (Arabic Ptolemy version), advanced algebra and trigonometry and improved astronomical equipment. His "Ephemerides" (star charts) were used by Vasco da Gama and by Columbus on their journeys to determine longitudinal positions.
Literature: R. Mett, R. Wegbereiter des neuen Weltbildes, 1996.