Amazing Astrolabe Facts That All Aspiring Astronomers Will Adore
The spherical astrolabe, an ancient astronomical instrument, was one of the most important tools invented in the Age of Exploration.Spherical astrolabes helped astronomers compute the placement of the Sun and stars for both the horizon and the meridian. It furnished them with a plane picture of the principle circles and celestial sphere - specifically, those addressing the celestial equator, the latitude, the altitude, the tropics of Capricorn and Cancer.The spherical astrolabe used by Middle Age astronomers ranged in size from 3-18 in (8-46 cm) and was usually made of brass or iron....