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Qāḍī Zāda al-Rūmī

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Title: Qāḍī Zāda al-Rūmī  
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Qāḍī Zāda al-Rūmī

Qāḍī Zāda al-Rūmī (1364 in Bursa, Ottoman Empire – 1436 in Samarqand, Timurid Empire), whose actual name was Salah al-Din Musa Pasha (qāḍī zāda means "son of the judge", al-rūmī "the Roman" indicating he came from Asia Minor, which was once Roman), was a Turkish astronomer and mathematician who worked at the observatory in Samarkand. He computed sin 1° to an accuracy of 10−12.

Together with Ulugh Beg, al-Kāshī and a few other astronomers Qāḍī Zāda produced the Zij-i-Sultani, the first comprehensive stellar catalogue since the Maragheh observatory's Zij-i Ilkhani two centuries earlier. The Zij-i Sultani contained the positions of 992 stars.

His works

  • Sharh al-Mulakhkhas (Commentary on Jaghmini's compendium on the science of Astronomy
  • Sharh Ashkal al-Ta'sis (Commentary on Samarkandi's Arithmetics)

Further reading

External links


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