38r and 38v) show the Ethiopian king of Greek mythology in fifteenth-century Timurid garb and with the facial features of Ulugh Beg, his fine beard rendered. The Almagest of Ptolemy was authoritative in astronomy for centuries. Numerous manuscripts of. by. from all Persian manuscripts existing in Great Britain, with a vocabulary of Persian and Arabic words. . Ulugh Beg. Ulugh Beg's catalogue of stars: Rev. SKU: ; Ulugh Beg – his Book of the fixed Stars by Al-Sufi.