A Fifteenth-Century Mamluk Astronomer in the Ottoman Realm: ‘Umar al-Dimashqī and his ‘ilm al-mīqāt corpus the Hamidiye 1453 Journal title: Nazariyat İslam Felsefe ve Bilim Tarihi Araştırmaları Dergisi Authors: Taha Yasin Arslan Subject(s):