Figure 6. MBARS results for the Viking landers: a) VL1, PSP_001719_2025 and b) VL2, PSP_001501_2280, with the sun orientation noted in the corner. The Viking landers are two of few objects of known size on the martian surface and are therefore a useful test case for MBARS. Table 1 gives results for 4 other images of landers.