תכונת השמים
Subtitle: ʻa. pi shiṭat ha-Rambam : ṿe-hu haḳdamot neḥutsot le-havanat ha-peraḳim 11-17 shebe-Hil. ḳidush ha-ḥodesh leha-Rambam
By: me-et Yosef Yitsḥaḳ Ḳeler
Publisher: Yehuda Keller
Published: 1988
Place of publication: Bruḳlin
Language: heb
Number of pages: 52
Subjects: Rosh Hodesh; Jewish astronomy; Jewish calendar
Other titles: Tekhunat ha-shamayim; Tekhunat ha-shamayim; Sanctification of the moon
Notes: Summary in English by Shimon Neubort.