Gemini Celestial Display Device (GCDD) used by astronaut Gordon Cooper during training for the Gemini 5 mission. The star chart consists of six taped panels that, if unfolded, measure over 3-feet in length; the celestial equator bisects North and South Declinations which feature a wide assortment of stars and constellations. Included is a translucent plastic cover with a preprinted orbit plot designed to slide up or down to update the current flight position relative to background stars. The cover is labeled “CF55061-1” with Serial No. on either side marked “1” or, in pencil, “Training.” The GCDD was used during periods when the spacecraft was in the earth's shadow, which allowed the stars to become visible. Spacecraft navigation was verified using star sightings relative to the orbit plot printed on the map. In fine condition. Accompanied by a letter of provenance from Michael Orenstein of Superior Stamp & Coin.
