LEVI, RAPHAEL, OF HANOVER. Techunath HaShamayim [calculations of intercalation and the Jewish calendar]. Edited by Moses ben Jekuthiel of Tiktin

(ASTRONOMY).

J. Janson

Amsterdam

1756

FIRST EDITION. Numerous astronomical diagrams

Vinograd, Amsterdam 1742

A guide to the scientific aspects of Maimonides' Hilchoth Kiddush HaChodesh (Laws of Sanctification of the New Moon). Levi was an interesting amalgam of two worlds: He excelled in his traditional yeshivah education in Frankfurt a/Main, yet was also closely associated with the philosopher Leibniz for many years. See S. Feiner, The Jewish Enligtenment (2004), pp. 41-42.