Deimos, from Pathfinder - Sol 4

Caption NASA originale: "Mars' outermost natural satellite, Deimos, is seen from the Planet's surface in this Pathfinder image taken at night on Sol 4. This picture was acquired by the Imager for Mars Pathfinder (IMP) camera. Using IMP images of Deimos and its companion moon, Phobos, the spectral characteristics of the satellites and properties of the Martian atmosphere are determined".