关于这张图
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 sand sheet with surface dune forms in an unnamed crater in Noachis Terra. Orbit Number: 58336 Latitude: -48.6161 Longitude: 34.0534 Instrument: VIS Captured: 2015-02-07 02:22 http://photojournal.jpl.nasa.gov/catalog/PIA19734
