Astronomy Picture of the Day
February 25, 2014

Dingo Gap, from atop
Dingo Gap, from atop

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

In this image, taken by the NASA - Mars Reconnaissance Orbiter on July, 4, 2012, we can see (among many other interesting Surface Features) the "Saddle" existing between two, small Valleys, named Dingo Gap, where the NASA - Mars Exploration Rover (MER) - Mars Laboratory "Curiosity" has just passed through. The Gap, as you can see very well here, is spanned by a single Dune (circled in black), which is about one meter tall.

Mars Local Time: 15:31 (Middle Afternoon)
Coord. (centered): 4,605° South Lat. and 137,405° East Long.
Spacecraft altitude: 279,1 Km (such as about 173,3211 miles)
Original image scale range: 27,9 cm/pixel (with 1 x 1 binningso objects ~ 84 cm across are resolved
Map projected scale: 25 cm/pixel
Emission Angle: 15,4°
Phase Angle: 44,1°
Solar Incidence Angle: 57° (meaning that the Sun was about 33° above the Local Horizon at the time the picture was taken)
Solar Longitude: 134,3° (Northern Summer - Southern Winter)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Lunar Explorer Italia

This picture (which is a NASA - Original Mars Reconnaissance Orbiter false colors and NON-Map Projected sub-frame identified by the serial n. ESP_027834_1755-1) has been additionally processed, magnified to aid the visibility of the details, contrast enhanced, Gamma corrected, 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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