Fahreddin Ahlatî was a Kurdish astronomer who lived in the 13th century. He is also mentioned in the sources as Fahreddin Kurdî Ahlatî and Fahreddin el-Hilâtî; His nisbe indicates that he came from Ahlat, which is connected to today's Bitlis.
Information about his life is quite limited. The exact dates of birth and death are not known; The period of activity is placed in the 1260s.
Meraga Observatory
After the capture of Baghdad in 1258, the Ilkhanid ruler Hülagü assigned Nasîrüddin Tûsî to establish an observatory in Meraga; construction started in 1259. Tusi brought together scholars from different regions of the period for observation and calculation. Fahreddin Ahlatî was among the first names to join this team and took part in the observatory's work together with scholars such as Müeyyedüddin el-Urdî, Fahreddin Merâgî, Necmeddin Debîrân Kazvînî.
Ahlatî is remembered as one of the representatives of Anatolian origin of these studies carried out in Meraga, which revealed one of the important centers of observational astronomy in the Islamic world.
