Anaglyph image of a crater and its large dune field in the Aonia Terra region
Anaglyph image of a crater and its large dune field in the Aonia Terra region
The HRSC camera system is operated by DLR on board the ESA orbiter Mars Express. Images taken using the nadir channel, which is directed vertically to the surface of Mars, and one of the four oblique-view stereo channels are used to produce so-called anaglyph images. They create a realistic, three-dimensional image of the landscape when viewed through spectacles with a red/blue or red/green filter. This spatial view provides an excellent impression of the morphology encountered in the crater, which is four kilometres deep and 48 kilometres wide: the resolution of the 3D image thus created allows elevation differences of less than 20 metres to be discerned. The crescent dunes protrude noticeably from the image plane; some of them are certain to be several hundred metres high. There is also a distinct terrace-like structure around half way up the crater wall, formed by material landslides further up the cliff face.
