The Astrolabe

The astrolabe is an ancient astronomical instrument used for solving problems related to time and the position of stars and planets. It consists of a flat disk with a rotating arm called an "alidade." By aligning the arm with a celestial body, users could determine their latitude, time of day, and other important navigational data. Used by astronomers, navigators, and astrologers, the astrolabe was crucial in advancing astronomy and navigation before the invention of more modern tools. Its design is a blend of artistry and science, reflecting the knowledge of the medieval world.