Astronomy Picture of the Day
March 28, 2015

Inverted Channels (EDM)
Inverted Channels (EDM)

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

This extrenely intriguing view, which is a sub-frame obtained by the NASA - Mars Reconnaissance Orbiter on December, 22, 2014, shows us an interesting detail of the Floor of a Martian Unnamed Impact Crater located in the Southern Hemisphere of the Red Planet; in particular, we can see here what appear to be something that we call "Inverted Channels".


As a matter of fact, the High Resolution Imaging that is provided by the NASA - Mars Reconnaissance Orbiter can help us to better study every pictured location and, by using an Absolute Natural Colors Processing of the frame, we can also better see (---> and so, therefore, better understand) the variations in the (Mineral) Composition of the photographed Surface


Mars Local Time: 15:10 (Early Afternoon)
Coord. (centered): 22,101° South Lat. and 326,547° East Long.
Spacecraft altitude: 260,2 Km (such as about 161,584 miles)
Original image scale range: 26,0 cm/pixel (with 1 x 1 binningso objects58 cm across are resolved
Map projected scale: 25 cm/pixel
Map projection: EQUIRECTANGULAR
Emission Angle: 8,9°
Phase Angle: 52,4°
Solar Incidence Angle: 44° (meaning that the Sun was about 46° above the Local Horizon at the time the picture was taken)
Solar Longitude: 257,8° (Northern Fall - Southern Spring)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Lunar Explorer Italia


This picture (which is an original NASA - Original Mars Reconnaissance Orbiter Falsely Colored and NON-Map-Projected Sub-frame identified by the serial n. ESP_039405_1575-1) has been additionally processed, extra-magnified to allow the Readers a better view of the details, contrast enhanced, Gamma corrected, and then re-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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