Abu al‐Qasim Ahmad ibn Abd Allah ibn Umar al‐Ghafiqī ibn al-Saffar al‐Andalusi (b. Cordoba - d. 1035 at Denia), Ibn al-Saffar (literally: son of the brass worker) was a close colleague and astronomer at the school founded by al-Majriti in Cordoba. His most well known work was a treatise on the astrolabe. The work was still published until the 15th century and influenced the work of Kepler. Ibn Saffar also wrote a commentary on the Zij al-Sindhind, and measured the coordinates to Mecca.
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