Astrolabes
Planespheric Astrolabes were historically used by astronomers and navigators to measure the inclined position in the sky of a celestial body, day or night. The word astrolabe means "the one that catches the heavenly bodies".
Planespheric Astrolabes were historically used by astronomers and navigators to measure the inclined position in the sky of a celestial body, day or night. The word astrolabe means "the one that catches the heavenly bodies".