February 10, 2012
Image Mission Elapsed Time (MET):
Wide Angle Camera (WAC) of the Mercury Dual Imaging System (MDIS)
5 (628 nanometers)
Derain crater is 190 km (118 miles) in diameter
This image, taken with the Wide Angle Camera (WAC)
, gives us a close-up look at Derain
crater. Named for the twentieth century French artist André Derain, this crater was first viewed
during MESSENGER's second flyby. Its unique dark collar is made up of low-reflectance material (LRM) exposed during the impact that formed the crater; this material is some of the darkest identified on Mercury and may have a mineralogical composition that is different from the surrounding terrain.
This image was acquired as a high-resolution targeted observation. Targeted observations are images of a small area on Mercury's surface at resolutions much higher than the 250-meter/pixel (820 feet/pixel) morphology base map or the 1-kilometer/pixel (0.6 miles/pixel) color base map. It is not possible to cover all of Mercury's surface at this high resolution during MESSENGER's one-year mission, but several areas of high scientific interest are generally imaged in this mode each week.
The MESSENGER spacecraft is the first ever to orbit the planet Mercury, and the spacecraft's seven scientific instruments and radio science investigation
are unraveling the history and evolution of the Solar System's innermost planet. Visit the Why Mercury?
section of this website to learn more about the key science questions that the MESSENGER mission is addressing. During the one-year primary mission, MDIS is scheduled to acquire more than 75,000 images in support of MESSENGER's science goals.
Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington
For information regarding the use of MESSENGER images, see the image use policy.