Astronomy Picture of the Day
May 25, 2014

Vista over Endeavour Crater - Sol 3637
Vista over Endeavour Crater - Sol 3637

Credits: NASA/JPL-Caltech/Cornell Univ./Arizona State Univ. (ASU) and Dr Paolo C. Fienga/LXTT/IPF for the additional process. and color.

This highly fascinating vista of Endeavour Crater's Inner Rim was acquired by the NASA - Mars Exploration Rover (MER) - Opportunity from the Southern End of a point nicknamed "Murray Ridge", and located on the Western Inner Rim of the Crater itself. This image-mosaic combines several exposures taken by the Rover's Panoramic Camera (or "PanCam", for short) during the 3637th Martian Day, or Sol, of the Mission (such as April 18, 2014 on Earth). The view extends from the East-South/East on the left (Sx), to the South on the right (Dx) and it encompasses the far Inner Rim of Endeavour Crater - on the left (Sx) - and the Crater's Western Inner Rim - on the right (Dx). Endeavour Crater is approx. 14 miles (such as about 22,53 Km) in diameter.


The small Impact Crater (barely) visible in the distance on the Slopes of the far Inner Rim of Endeavour Crater is about 740 feet (such as about 225,55 meters) in diameter and is approx. 13 miles (such as about 20,92 Km) away from the Rover. The high Peak that is visible in the distance on the right (Dx) side of the image-mosaic has been informally named "Cape Tribulation", and it is about 1,2 miles (such as approx. 1,93 Km) to the South of Opportunity's position when this view was recorded. The Inner Rim of Endeavour Crater curves off to the left (Sx) from Cape Tribulation in a series of Peaks heading towards the far Southern Inner Rim of the Crater.


The Floor of Endeavour Crater is filled with Dark (perhaps Volcanic, in origin?) Sand, a lot of brighter orange-colored Dust, and, in the distance, Dusty Haze. The Outcrops visible here, on the Western Inner Rim of Endeavour Crater, are Crater's Ejecta which have been covered, in the foreground, by Dark Sand Ripples. On Sol 3662 (such as May 13, 2014 on Earth), the NASA - Mars Exploration Rover (MER) - Opportunity approached the Dark Outcrops about halfway down on the right (Dx) side of this image-mosaic. The Original View that was obtained by the NASA - Mars Exploration Rover (MER) - Opportunity, merges exposures taken through three of the PanCam's Color Filters, which were centered, respectively, on Wavelengths of 753 Nanometers (---> Near-InfraRed), 535 Nanometers (green) and 432 Nanometers (violet).


This picture (which is a False-Colors Image-Mosaic taken by the NASA - Mars Exploration Rover (MER) - Opportunity on April, 18, 2014, published on the NASA - Planetary Photojournal and identified by the ID n. PIA 18094) has been additionally processed, reduced in size to fit the page, Gamma corrected and then re-colorized in Absolute Natural Colors (such as the colors that a normal - meaning "in the average" - human eye would actually perceive if someone were on the Surface of Mars, near the NASA - Mars Exploration Rover (MER) - Opportunity, and then looked ahead, towards the Horizon and the Inner Walls of Gale Crater), by using an original technique created - and, in time, dramatically improved - by the Lunar Explorer Italia Team.



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