Bidspirit auction | ASTRONOMY: Sefer Tekhunat HaShamayim –

ASTRONOMY: Sefer Tekhunat HaShamayim – First Edition. Amsterdam, 1756 Astronomy to understand the Rambam's laws of Kiddush HaChodesh, by Rabbi Rafael Halevi of Hanover. Includes tables, diagrams, and illustrations to explain the laws. First Edition. Amsterdam, 1756. With endorsements from the rabbis of Amsterdam and Leszno.