Al-Farghani
Abu' L-Abbas Ahmad ibn Muhammad ibn Kathir Al-Farghani (805 - 880) known under the name Alfraganus or Alfergani , born with Ferghana in Sogdiane (current Ouzbékistan), is one of the Astronome S Persan most famous of the 9th century.
It measures the diameter of the Ground and written in 833 Éléments of astronomy on the movement of the Celestial body S, inspired by the Almageste of Ptolémée, which remains the most famous book of Astronomie until the 15th century in Occident but also in the East. This book is translated into Latin at the 12th century and exerts a great influence within European astronomy before Regiomontanus. It takes share with the revision of the astronomical tables of Ptolémée and composes, in addition to an introduction to astronomy, two other works, on the sundials and the Astrolabe.
The lunar crater Alfraganus was named thus to pay homage to him.
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