First Astronomical handbook in German 1569. Astronomia Teutsch: Illustrated.

Astronomia Teutsch Dergleichen vormals nye in druck außgangen, darinn verfast seind vier Bücher ; Im ersten ist ein gründtlicher vnterricht, wie man den lauff aller Planeten gar behend rechnen, vnd die figur des Himmels anstellen vnd auffrichten soll . Nikolaus Renßberger. Gedruckt zu Augspurg, durch Mattheum Francken. M.D.LXVIIII. Small 4to., 220 x 160 mm,., [11], 382 leaves. Top margin and lower outside corner of the title page repaired. Fine blind-stamped pigskin binding with clasps.

Rensberger wrote the first astrological textbook in German, consisting of four parts. It teaches the student the calculation of the positions of the Planets and the creation of a birth chart. Rensberger explains the meaning and effects of lunar and solar eclipses and revolutions, as well as the interpretation of the future years from the horoscope. In contrast to determinism, the mathematician Rensberger takes the view that astrology is a divine tool to become a better Christian. The stars enable man to recognize the characteristics of every individual and thus to change them for the better through self-knowledge.

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