A new public exhibit, including a full-scale mock-up of the highest resolution camera ever sent into orbit, is nearing completion in the operations center of the High Resolution Imaging Science Experiment mission to Mars. The real 120-pound HiRISE camera, streaking toward Mars since its Aug. 12 launch from Cape Canaveral, is expected to reach the red planet in March, said Lorretta McKibben, public outreach coordinator for HiRISE, housed in the Sonett Space Sciences Building at the University of Arizona.