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DAWN - Bild des Tages - August 2012
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10.08.2012 - HAMO and LAMO images of Arruntia crater



These Dawn framing camera (FC) images of Vesta show Arruntia crater at both HAMO (high-altitude mapping orbit) and LAMO (low-altitude mapping orbit) resolutions. The left image is the HAMO image and the right image is the LAMO image. Arruntia is the large crater that almost fills the LAMO image. The LAMO image is approximately 3 times better spatial resolution than the HAMO image. In images with higher spatial resolutions smaller objects can be better distinguished. The sharpness of its left rim and the degraded nature of its right rim can been seen in both the HAMO and LAMO images. But, details such as small boulders around Arruntia’s rim can be seen in the LAMO image. On the side of Arruntia’s interior that is illuminated by the sun there is a fine-scale intermingling of dark and bright material that is also only visible in the LAMO image.

These images are located in Vesta’s Bellicia quadrangle, in Vesta’s northern hemisphere. NASA’s Dawn spacecraft obtained the left image with its framing camera on Oct. 24, 2011. This image was taken through the camera’s clear filter. The distance to the surface of Vesta is 700 kilometers (435 miles) and the image has a resolution of about 63 meters (207 feet) per pixel. This image was acquired during the HAMO (high-altitude mapping orbit) phase of the mission. NASA’s Dawn spacecraft obtained the right image with its framing camera on Feb. 20, 2012. This image was taken through the camera’s clear filter. The distance to the surface of Vesta is 272 kilometers (169 miles) and the image has a resolution of about 20 meters (66 meters) per pixel. This image was acquired during the LAMO (low-altitude mapping orbit) phase of the mission.

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 D.C. UCLA is responsible for overall Dawn mission science. The Dawn framing cameras have been developed and built under the leadership of the Max Planck Institute for Solar System Research, Katlenburg-Lindau, Germany, with significant contributions by DLR German Aerospace Center, Institute of Planetary Research, Berlin, and in coordination with the Institute of Computer and Communication Network Engineering, Braunschweig. The framing camera project is funded by the Max Planck Society, DLR, and NASA/JPL.

More information about Dawn is online at http://dawn.jpl.nasa.gov.

Image credit: NASA/JPL-Caltech/UCLA/MPS/DLR/IDA

 DAWN-0282 10.08.2012
zum Bild DAWN-0282 10.08.2012


 


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