The astronomer ‘Abd al-Rahman ibn ‘Umar al-Sufi, commonly known as al-Sufi, was born in Persia (present-day Iran) in 903 A.D. and died in 986. He worked in Isfahan and in Baghdad, and is known for his translation from Greek into Arabic of the Almagest by the ancient astronomer Ptolemy. Al-Sufi’s most famous work is Kitab suwar al-kawakib (Book of the constellations of the fixed stars), which he published around 964. In this work, al-Sufi describes the 48 constellations that were established by Ptolemy and adds criticisms and corrections of his own. For each of the constellations, he provides the indigenous Arab names for their stars, drawings of the constellations, and a table of stars showing their locations and magnitude. Al-Sufi’s book spurred further work on astronomy in the Arabic and Islamic worlds, and exercised a huge influence on the development of science in Europe. The work was frequently copied and translated. This copy, from the collections of the Library of Congress, was produced somewhere in south or central Asia, circa 1730, and is an exact copy of a manuscript, now lost, prepared for Ulug Beg of Samarkand (present-day Uzbekistan) in 1417 [820 A.H.]. The Bibliothèque nationale de France has a manuscript of the Kitab suwar al-kawakib that was prepared for Ulug Beg in 1436.

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