Abd al-Rahman al-Sufi

'Abd al-Rahman al-Sufi
Born	7 December, 903 Rey, Iran
Died	25 May, 986 (aged 83) Shiraz, Iran
Residence	Isfahan, Isfahan County, Central District (Isfahan County), Isfahan Province, now Iran
Occupation	Astronomer
Era	Islamic Golden Age
Notable work	Book of Fixed Stars

'Abd al-Rahman al-Sufi (Persian: عبدالرحمن صوفی‎‎ Arabic: أبوالحسين عبدالرحمن بن عمر الصوفي‎‎) (December 7, 903 in Rey, Iran – May 25, 986 in Shiraz, Iran) was a Persianastronomer also known as 'Abd ar-Rahman as-Sufi, 'Abd al-Rahman Abu al-Husayn, 'Abdul Rahman Sufi, or 'Abdurrahman Sufi and, historically, in the West as Azophi and Azophi Arabus. The lunar crater Azophi and the minor planet 12621 Alsufi are named after him. Al-Sufi published his famous Book of Fixed Stars in 964, describing much of his work, both in textual descriptions and pictures. Al-Biruni reports that his work on the ecliptic was carried out in Shiraz. He lived at the Buyid court in Isfahan.

'Abd al-Rahman al-Sufi was one of the famous nine Muslim astronomers. His name implies that he was from a Sufi Muslim background. He lived at the court of Emir Adud ad-Daula in Ispahan, Persia, and worked on translating and expanding Greek astronomical works, especially the Almagest of Ptolemy. He contributed several corrections to Ptolemy's star list and did his own brightness and magnitude estimates which frequently deviated from those in Ptolemy's work.

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