Šahmardān Ibn Abī al-Khayr of Ray was an important astronomer of the 5th/11th century. He composed the Rawḍat al-Munajjimīn in Persian at the request of cAlī ibn Ibrāhīm of Kirmān, and dedicated it to his mentor, Abū al- Ḥasan Aḥmad ibn Nasavī in 466/1074. The text contains detailed discussions of astronomy and its various principles for the composition of which the author has consulted a variety of ancient sources, some of which are no longer extant. This book is also important for being an excellent example of the scientific writing of the late 11th century A.D.
By: Šahmardān Ibn Abī al-Khayr Rāzī (5th/11th century)
Edited by: Jalil Akhavan Zanjani
Tehran: 2003 hardcover (618 pp)