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This image is of the southern rim of the crater Stravinsky. In this high-incidence-angle lighting, the topography of the crater is easily seen. Particularly noticeable is the difference between the crater's flat floor and the hummocky terrain of the ejecta blanket outside the crater. The area in the lower left of the image is part of the Vyasa basin. Since Stravinsky's ejecta overlaps Vyasa, we can deduce that Stravinsky is younger than Vyasa.
Date acquired: February 15, 2013
Image Mission Elapsed Time (MET): 3211541
Image ID: 3522080
Instrument: Wide Angle Camera (WAC) of the Mercury Dual Imaging System (MDIS)
WAC filter: 7 (748 nanometers)
Center Latitude: 50.01°
Center Longitude: 281.1° E
Resolution: 256 meters/pixel
Scale: The smaller crater in the upper left is 7.8 km (4.8 miles) in diameter.
Incidence Angle: 82.7°
Emission Angle: 0.1°
Phase Angle: 82.7°
Photo credit: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington
Focusing on the central peaks of a large unnamed crater between Stravinsky and Velazquez, this image takes a close look at hollows on both the crater floor and the peaks. It is interesting to note that the hollows seem to follow the shape of the central peak ring, and are seen in lower concentrations on the crater floor. Another interesting observation is that the large hollow in the center of the image has a crisp, fresh appearance. This suggests that some hollows are relatively young features, and could be in the process of forming today.
Date acquired: May 10, 2011
Image Mission Elapsed Time (MET): 213547274
Image ID: 237117
Instrument: Narrow Angle Camera (NAC) of the Mercury Dual Imaging System (MDIS)
Center Latitude: 43.71°
Center Longitude: 290.9° E
Resolution: 21 meters/pixel
Scale: This image from corner to corner is approximately 15 km (9 mi.)
Incidence Angle: 68.0°
Emission Angle: 17.3°
Phase Angle: 85.4°
Photo credit: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington
The structure running across the center of this image is the southern wall of the 190-kilometer diameter crater Stravinsky. Numerous small craters pepper the scene. One small crater in particular, near the westernmost extent of the image, appears to have some darker material streaming down the wall. That small crater is approximately 170 meters in diameter, which is slightly less than the length of two football fields.
Date acquired: April 02, 2012
Image Mission Elapsed Time (MET): 241837210
Image ID: 1594982
Instrument: Narrow Angle Camera (NAC) of the Mercury Dual Imaging System (MDIS)
Center Latitude: 50.29°
Center Longitude: 281.2° E
Resolution: 20 meters/pixel
Scale: An edge of this image is approximately 22 kilometers (14 miles) long.
Incidence Angle: 56.9°
Emission Angle: 19.6°
Phase Angle: 76.6°
Photo credit: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington
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