Sunday, May 26, 2013

Rays, Vents, and LRM near Picasso Crater


This color image emphasizes three major features of Mercury's surface: bright ejecta rays, explosive volcanic vents, and dark low reflectance material (LRM). The bright ray passing through the center of the image is part of Hokusai's immense system of rays. To the right, Picasso's arc-shaped pit is distinctive in color and contrasts with the patch of LRM to the crater's right.

Date acquired: September 17, 2011
Image Mission Elapsed Time (MET): 224718677, 224718685, 224718679
Image ID: 769641, 769646, 769642
Instrument: Wide Angle Camera (WAC) of the Mercury Dual Imaging System (MDIS)
WAC filters: 9, 7, 6 (996, 748, 433 nanometers) in red, green, and blue
Center Latitude: 2.23°
Center Longitude: 46.34° E
Resolution: 1350 meters/pixel
Scale: Picasso crater is about 134 kilometers (83 miles) in diameter
Incidence Angle: 47.0°
Emission Angle: 0.2°
Phase Angle: 47.0°

Photo credit: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington

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