This is astronomical table and star catalogue that was published by Ulugh Beg in 1438–1439. The book is joint effort of prominent muslim astronomers of time including Jamshid al-Kashi and Ali Qushji with support and contribution of Ulugh Beg at Samarkand’s Ulugh Beg Observatory.

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https://openn.library.upenn.edu/Data/0032/html/ms_or_001.html

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