The visible and infrared mapping spectrometer aboard NASA's Dawn spacecraft acquired this set of images during the high-altitude mapping orbit phase at about 420 miles (680 kilometers) above the surface of Vesta.
The Dawn mission to Vesta and Ceres is managed by NASA's Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, for NASA's Science Mission Directorate, Washington. UCLA is responsible for overall Dawn mission science. Dawn's VIR was provided by ASI, the Italian Space Agency and is managed by INAF, Italy's National Institute for Astrophysics, in collaboration with Selex Galileo, where it was built.
More information about Dawn is online at http://www.nasa.gov/dawn and http://www.dawn.jpl.nasa.gov.