Star chart used for training Apollo 16 astronauts, 8.25″ in diameter, depicting several constellations and their brightest stars. Overlaid with a spinning transparent sheet that features a set of six intricate orbit patterns. Chart is Velcroed to a clear 8.5 x 11.5 piece of plexiglass. In fine condition, with rust to small central bearing and a slight crease to transparent sheet.
