The map includes all resolved images of Pluto’s surface acquired between July 7-14, 2015, at pixel resolutions ranging from 18 miles (30 kilometers) on the Charon-facing hemisphere (left and right edges of the map) to 770 feet (235 meters) on the hemisphere facing New Horizons during the spacecraft’s closest approach on July 14, 2015 (map center). The non-encounter hemisphere was seen from much greater range and is, therefore, in far less detail.
The latest images woven into the map were sent back to Earth as recently as April 25, and the team will continue to add photos as the spacecraft transmits the rest of its stored Pluto encounter data. All encounter imagery is expected on Earth by early fall. The team is also working on improved color maps. http://www.nasa.gov/image-feature/pluto-a-global-perspective
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