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DAWN - Bild des Tages - November 2011
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03.11.2011 - Topography of Vesta’s south polar region II



These Dawn FC (framing camera) images show the central area of the south polar basin. The mountain/ central complex is the roughly circular feature in the center of the image. There are grooves, scarps and hummocky (eg. wavy/ undulating) terrane around and on this feature. The left image is an albedo image, which is taken directly through the clear filter of the FC. Such an image shows the albedo (eg. brightness/ darkness) of the surface. The right image uses the same albedo image as its base but then a color-coded height representation of the topography is overlain onto it. The various colors correspond to the height of the area that they color. For example, the white and red on the top edge of the right image is the highest area and the blue areas in the bottom of the image is the lowest. This color-coding shows the topography of the region well: the mountain/ central complex (colored green and yellow) is higher than the roughly circular depression surrounding it (colored blue and green), which is all lower than the red and white region in the top of the image. The topography is calculated from a set of images that were observed from different viewing directions, these are called stereo images.

NASA’s Dawn spacecraft obtained the albedo image with its framing camera on August 11th 2011. This image was taken through the camera’s clear filter. The distance to the surface of Vesta is 2740 km the image has a resolution of about 250 meters per pixel. The images are projected using a lambert-azimuthal map projection.

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-0088 03.11.2011
zum Bild DAWN-0088 03.11.2011


 


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