Uzbekistan: Qazi Zadeh Rumi mausoleum, Shah-i-Zinda, Samarkand. Qāḍī Zāda al-Rūmī (1364-1436), 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

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