CCD CAMERAS - CCD scrutinizes Martian happy face

摘要

Images of Crater Galle on Mars, named after a German astronomer and informally known as the "happy face" crater, were taken in April using CCD detector technology by e2v (Essex, England) in the high-resolution stereo camera (HRSC) on board the European Space Agency (ESA) Mars Express spacecraft (see figure). The HRSC obtained images of the Martian surface with a ground resolution ranging between 10 to 20 m/ pixel. The images of this 230 km diameter impact crater are mosaics created from five individual strips, each tens of kilometers wide.