This map is based on LROC data provided courtesy of NASA/GSFC/Arizona State University.  This
 data is based on images from the Lunar
 Reconnaissance Orbiter's Wide Angle Camera, but has been processed to color-code elevations.
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This data has then been projected using a projection that is close to orthographic
 but that extends the visible portion around each edge for a distance of about 2% of
 the circumference of the moon, since due
 to libration such small portions of the far side
 can sometimes be seen.