From the next twelve years Baqi Urmançe lived in Central Asian cities: Samarqand, Toshkent, Almaty and Balkhash.
Khorasan in its proper sense comprised principally the cities of Mashhad, Nishapur and Sabzevar (now in northeastern Iran), Balkh, Herat and Taloqan (now in Afghanistan), Merv, Nisa and Abiward (now in southern Turkmenistan), and Samarqand and Bukhara (now in Uzbekistan).
The work of Ali Qushji (d. 1474), who worked at Samarqand and then Istanbul, is seen as a late example of innovation in Islamic theoretical astronomy and it is believed he may have possibly had some influence on Nicolaus Copernicus due to similar arguments concerning the Earth's rotation.