The bright rays of Xiao Zhao dominate this scene. These rays indicate that Xiao Zhao is a relatively young crater. Eastman crater can be seen to the southwest of Xiao Zhao. The eight different color filters of the WAC that are used to create the color base map have central wavelengths of 430, 480, 560, 630, 750, 830, 900, and 1000 nm. The images acquired through these narrow-band filters are combined to create color images that accentuate color differences on Mercury's surface. As an example, this image was created by using three images acquired as part of the color base map with the central wavelengths of 1000, 750, and 430 nm displayed in red, green, and blue, respectively. This particular combination allows the visualization of details, some of which would be invisible to the human eye.
Date acquired: December 29, 2011
Image Mission Elapsed Time (MET): 233687507, 233687511, 233687527
Image ID: 1199649, 1199650, 1199654
Instrument: Wide Angle Camera (WAC) of the Mercury Dual Imaging System (MDIS)
WAC filter: 9 (1000 nanometers), 7 (750 nanometers), 6 (433 nanometers) as red-green-blue
Center Latitude: 9.6°
Center Longitude: 125.8° E
Resolution: 443 meters/pixel
Scale: The rayed crater Xiao Zhao is 24 km (15 mi.) in diameter.
Incidence Angle: 26.9°
Emission Angle: 14.1°
Phase Angle: 28.0°
Photo credit: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington
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