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High-resolution Hollows
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High-resolution Hollows

March 13, 2014
Release Date: March 12, 2014 Topics: Hollows, Low Reflectance Material (LRM), NAC, Named Craters Date acquired: March 07, 2014 Image Mission Elapsed Time (MET): 36539529 Image ID: 5891638 Instrument: Narrow Angle Camera (NAC) of the Mercury Dual Imaging System (MDIS) Center Latitude: 51.90° Center Longitude: 267.53° E Resolution: 7.9 meters/pixel Scale: This image is about 8 kilometers (5 miles) across Incidence Angle: 63.2° Emission Angle: 14.9° Phase Angle: 78.0° Of Interest: This image, just captured last week, shows Mercury's hollows in the highest resolution yet achieved! These hollows are located on the wall of Sholem Aleichem, within a region of low-reflectance material. This image was acquired as part of the MDIS low-altitude imaging campaign. During MESSENGER's second extended mission, the spacecraft makes a progressively closer approach to Mercury's surface than at any previous point in the mission, enabling the acquisition of high-spatial-resolution data. For spacecraft altitudes below 350 kilometers, NAC images are acquired with pixel scales ranging from 20 meters to as little as 2 meters. 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. During the first two years of orbital operations, MESSENGER acquired over 150,000 images and extensive other data sets. MESSENGER is capable of continuing orbital operations until early 2015. Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington


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