Regiomontanus

Johannes Müller von Königsberg (1436–1476), known as Regiomontanus, was a German mathematician and astronomer born in Lower Franconia. He became Georg von Peuerbach's pupil at Vienna in 1451, and on his master's deathbed in 1461 promised to complete his abridgement of Ptolemy's Almagest. After four years in Italy with Cardinal Bessarion, he finished the Epitome.

He served Matthias Corvinus at Buda, building instruments and compiling trigonometrical tables. Settling in Nuremberg in 1471, he ran the first scientific printing press. Summoned to Rome by Sixtus IV, he died there in 1476.