Astronomy Picture of the Day
November 16, 2014

Inca City, from MRO (2)
Inca City, from MRO (2)

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

It is about two weeks later in Angustus Labyrinthus - also informally known as Inca City - as to yesterday's APOD, the season is officially Spring and a number of further changes have already occurred. Large blotches of Dust cover the so-called Araneiforms. Dark Spots present on the visible Ridges show various places where the Seasonal Polar Ice Cap ruptured, releasing Gases and Fine Materials from the Surface below. At the bottom of the image, the Fans point in more than one direction from a single Source, showing that the Dominant Wind has changed direction just while Gases and Dust were flowing out.


Mars Local Time: 17:05 (Middle Afternoon)
Coord. (centered): 81,439° South Lat. and 295,497° East Long.
Spacecraft altitude: 247,4 Km (such as about 153,635 miles)
Original image scale range: 49,5 cm/pixel (with 2 x 2 binningso objects ~ 1 meter and 49 cm across are resolved
Map projected scale: 50 cm/pixel
Map projection: POLAR STEREOGRAPHIC
Emission Angle: 2,8°
Phase Angle: 85,0°
Solar Incidence Angle: 87° (meaning that the Sun was about above the Local Horizon at the time the picture was taken)
Solar Longitude: 181,7° (Northern Fall - Southern Spring)
Credits: NASA/JPL/University of Arizona
Additional process. and coloring: Lunar Explorer Italia


This picture (which is a NASA - Original Mars Reconnaissance Orbiter b/w and NON Map-Projected frame identified by the serial n. ESP_037811_0985) has been additionally processed, reduced in size to fit the page, 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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