The High Resolution Stereo Camera (HRSC) Experiment onboard the European Mars Express (MEX) Mission

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A major goal of the European Mars Express mission is to image the Martian surface at high spatial resolution, in stereo and in color. This task will be met by the High Resolution Stereo Camera (HRSC), a multiple-line pushbroom scanner. 9 CCD lines are mounted in parallel and simultaneously acquire images at high spatial resolution, in triple-stereo, in four colors and at five viewing angles. During the nominal mission, the HRSC will cover at least 50% of the Martian surface at 10-15 m/pixel, 70% at better than 30 m/pixel and 100% at better than 100 m/pixel resolution. The instrument is equipped with an additional super-resolution channel reaching a spatial resolution of up to 2 m/pixel. This channel is boresighted with the HRSC stereo scanner and will obtain nested-in images or image strips. Up to a few % of the Martian surface can be covered by the super-resolution channel during the mission. This channel will be of particular importance for highest-resolution coverage of landing sites such as planned for the Mars Express Beagle 2 site and the two Mars Surveyor 2003 rover sites. Scientifically, the HRSC experiment concentrates on the geological and climatological evolution of Mars with special emphasis on the role of water throughout the Martian history. An international team of 40 Co-Investigators from 28 scientific institutions and 10 countries will run the experiment and analyze the data over the two-year nominal mission with a possible extension over an additional two years. The data will be processed in such a way that they will be usable by the scientific community at large six months after receipt. The experiment hardware and software development is finished and the instrument is being assembled and tested at the ESA-MEX spacecraft. The launch of the mission is scheduled from Baikonur in late May 2003. First data from the cruise phase to Mars will be received in the June-July period of 2003.

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