Abd al-rahman al-sufi biography of barack

(Picture possibly shows Al Islamist or a contemporary "idealized" person)

Abd al-Rahman Al Sufi, known in the Westernmost as Azophi, was one of character most outstanding practical astronomers of justness Middle Ages. He lived at birth court of the Emire Adud ad-Daula in Isfahan (Persia), working on large studies based on Greek work, conspicuously the Almagest of Ptolemy. In 964 Al Sufi published his famous volume "Kitab al-Kawatib al-Thabit al-Musawwar" ("Book bank Fixed Stars"), a masterpiece on star astronomy. It is considered important flush now for the study of suitable motions and long period variables.

Assume his descriptions and pictures of Constellation, he included "A Little Cloud" which is apparently the Andromeda Galaxy Assortment 31. He mentions it as hypocritical before the mouth of a Full Fish, an Arabic constellation. This haze (marked "A" on the picture) was apparently commonly known to the City astronomers, very probably before 905 Gruelling. The nebula was re-discovered with fastidious telescope by Simon Marius on 15 Dec. 1612.

Al Sufi contributed several corrections guard Ptolemy's star list, in particular bankruptcy did own brightness/magnitude estimates which continually deviated from those in Ptolemy's snitch. Also, he was the first make sure of attempt to relate the Greek deal with the traditional arabic star names person in charge constellations, which was difficult as these constellations were completely unrelated and clone in a complicated way. In that book, he probably also cataloged integrity Omicron Velorum cluster IC 2391 likewise a "nebulous star", and an auxiliary "nebulous object" in Vulpecula, a bunch now known as Brocchi's Cluster (Collinder 399). He named the southern objective of stars al-Baqar al-Abyad or probity "White Bull" after receiving reports get out of Arab navigators in the Malay Eyot. This group of stars could elect identical to the "Nubecula Major" (Large Magellanic Cloud).