The Imager for MarsPathfinder, also known as the IMP, is a multi-spectral stereo imagingsystem, a camera, which landed on Mars aboard the Mars Pathfinder on July4th, 1997. The Pathfinder lander, renamed the Carl Sagan Memorial Station,is in an old flood channel, Ares Vallis. Although thelanded mission is officially over, scientists are still at work analyzingthe first new pictures of the Martian surface since the Viking landersin 1976. Because the IMP is a "multi-spectral" imaging system, it takedifferent kinds of pictures, and the data returned from the IMP is helpingscientists learn about the atmosphere, geology, and weather of Mars. TheIMP was designed at the University of Arizona Lunar and Planetary Lab,by a team under the direction of Principal Investigator Peter Smith.