DLR Institute of Planetary Research - 25.11.2011 - Topography and albedo image of part of Lucaria Tholus quadrangle

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25.11.2011 - Topography and albedo image of part of Lucaria Tholus quadrangle

These Dawn FC (framing camera) images show part of Lucaria Tholus quadrangle in Vesta’s northern hemisphere. 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 topography is calculated from a set of images that were observed from different viewing directions, allowing stereo reconstruction. The various colors correspond to the height of the area. The white area in the bottom of the image is the highest area and the blue area in the top of the image is the lowest area. Lucaria Tholus quadrangle is in Vesta’s heavily cratered northern hemisphere. Many craters, with different preservation states from fresh through degraded to ruined, are visible in these images. Two large ruined craters are partially visible in the top of the albedo image. These craters show up more clearly as the large, roughly circular, blue depressions in the top of the topography image.

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