Crater Dunes - False Color

The THEMIS VIS camera contains 5 filters. The data from different filters can be combined in multiple ways to create a false color image. These false color images may reveal subtle variations of the surface not easily identified in a single band image. Today's false color image shows a large dune covered sand sheet on the floor of this unnamed crater in Noachis Terra. Large scale dunes and dune fields cover the floor of many craters in this region west of Hellas Planitia - including Rabe, Proctor, and Matara craters and numerous other unnamed craters. In this false color combination blue indicates basaltic sands.