Astronomy Picture of the Day
October 21, 2012

Possible Migrating Dunes in Arabia Terra
Possible Migrating Dunes in Arabia Terra

Credits: NASA/JPL/University of Arizona - Credits for the additional process. and color.: Dr Paolo C. Fienga/Lunar Explorer Italia/IPF

Mars Local Time: 14:36 (Early Afternoon)
Coord. (centered): 10,557° North Lat. and 9,075° East Long.
Spacecraft altitude: 280,0 Km (such as about 175,0 miles)
Original image scale range: 28,0 cm/pixel (with 1 x 1 binning) so objects ~ 84 cm across are resolved
Map projected scale: 25 cm/pixel
Emission Angle: 8,6°
Phase Angle: 46,6°
Solar Incidence Angle: 38° (meaning that the Sun was about 52° above the Local Horizon at the time the picture was taken)
Solar Longitude: 34,2° (Northern Spring - Southern Autumn)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Lunar Explorer Italia

This picture (which is a crop from a NASA - Original Mars Reconnaissance Orbiter CTX b/w frame, identified by the serial n. ESP_024977_1905) has been additionally processed and then colorized in Absolute Natural Colors (such as the colors that a human eye would actually perceive if someone were onboard the NASA - Mars Reconnaissance Orbiter and then looked down, towards the Surface of Mars), by using an original technique created - and, in time, dramatically improved - by the Lunar Explorer Italia Team.

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