Arabic Astrolabe

Timeline

1. 901–1170Baghdad and Isfahan · MesopotamiaIslamic craftsmen and astronomers perfected astrolabe scales, rete projections, and alidade mechanisms, creating a standardized design with interchangeable plates for different latitudes that served both prayer times and stellar observation, spreading widely east to Central Asia and west to Iberia.
2. c. 1171–1180Cairo and Damascus · LevantIn madrasas, astronomical observation, and Mediterranean–Indian Ocean trade routes in Egypt and Syria, the astrolabe was used to determine the qibla, compile calendars, and compute star positions, becoming the core handheld instrument of Islamic astronomical navigation knowledge.
3. 1201–1501Iberia and Mediterranean ports · MediterraneanThrough the translation movement and trade, Islamic astrolabe technology reached Latin Europe, spurring the development of European observatory and marine astrolabes; only with the rise of precision clocks and sextants in the early modern period did it gradually give way to new navigational tools.