Fifteenth-Century Islamic Astrolabes

Timeline

1. 1421–1449Samarkand · TransoxianaTimurid sultan Ulugh Beg built a large observatory in Samarkand, compiled the Zij-i Sultani (New Gurgani Tables), precisely determined stellar positions, and advanced the calibration accuracy of portable instruments such as astrolabes, marking the pinnacle of fifteenth-century Islamic astronomy.
2. 1421–1500Istanbul–Cairo–Fez · North AfricaIn the fifteenth century, craftsmen in Istanbul, Cairo, Fez, Damascus, and elsewhere produced large numbers of brass astrolabes, engraved with Arabic scales, the direction of prayer, and constellation designs; they served both as observational tools for scholars and as fine craft objects displaying status, spreading along trade routes to India and Europe.
3. 1450–1500Mediterranean–Iberia · Iberian PeninsulaFifteenth-century Islamic astrolabes reached Europe through the Iberian translation movement and Venetian trade, influencing astronomers such as Regiomontanus; astrolabe structures and Arabic scales were absorbed into Latin literature, laying foundations for early modern astronomical and navigational instruments.
4. 1700museums worldwideSince the eighteenth century, European museums have systematically collected fifteenth-century Islamic astrolabes; modern scholars study their workshop origins and astronomical precision through inscription analysis and metal testing, making the astrolabe an important material witness to the mutual learning between the history of science and Islamic civilization.