False Color of Oppia Crater

False Color of Oppia Crater

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This Dawn FC (Framing Camera) image shows Oppia crater and its ejecta in a false-color composite image. The RGB composite used consists in ratio of the brightness at a wavelength of 750 nm to the brightness at 440 nm for red; green is used for the ratio of the brightness at 750 nm to 920 nm and blue is used for the ratio of the brightness at 440 nm to 750 nm. Images were obtained during the High-Altitude Mapping Orbit (HAMO), at about 420 miles (680 kilometers) above Vesta's surface. The FC images have been wrapped onto a topographic model of Vesta to create this perspective view. In this way, hill-shading can be added to the color images in order to enhance the relief of the area.

Oppia crater is a distinctive crater because it has an unusually shaped rim likely due to an impact on a slope. The fact that it has impacted on a slope also produced a asymmetric ejecta distribution around the crater: the red/orange area at the bottom of the image (south of Oppia) corresponds to the material ejected from the crater and one can notice that the northernmost area of Oppia (top of the image) exhibits much less red/orange ejecta material.

These images are located in Vesta's Oppia quadrangle and the center latitude and longitude of the image is 6.5°S, 307.8°E.

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 were 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.

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

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