Astronomy Picture of the Day
October 20, 2015

Rectangular Shadow on 1-Ceres (EDM)
Rectangular Shadow on 1-Ceres (EDM)

Credits: NASA/JPL-Caltech/UCLA/MPS/DLR/IDA and Dr Paolo C. Fienga for the additional process. and color.

This frame is an Extra Detail Magnification ("EDM") of October's, 18th, fascinating Contextual (or "CTX", for short) Frame, taken by the NASA - Dawn Spacecraft on September, 20, 2015, which shows us, once again, a very small portion of the Northern Hemisphere of the Dwarf Planet named 1-Ceres.

In today's EDM we can see, with great detail, an extremely dark and almost perfectly rectangular Shadow (or is it, maybe, a really unusually-shaped Surface Depression?) that is visible to the East of the Crater and whose nature remains - for now - a real mistery.

We, as IPF, have really no idea of what this Feature may actually be or represent but, if you have any idea, please write us at .

The original photo was taken from an altitude of approx. 915 miles (such as about 1472,5461 Km) from the Surface, with a resolution of roughly 450 feet (such as about 137,16 meters) per pixel.

This image (which is a crop obtained from an an Original NASA - Dawn Spacecraft's b/w and NON Map-Projected frame published on the NASA - Planetary Photojournal with the ID n. PIA 19979 - Dawn HAMO Image 37) has been additionally processed, extra-magnified to aid the visibility of the details, contrast enhanced and sharpened, Gamma corrected and then colorized (according to an educated guess carried out by Dr Paolo C. Fienga-LXTT-IPF) in Absolute Natural Colors (such as the colors that a normal human eye would actually perceive if someone were onboard the NASA - Dawn Spacecraft and then looked ahead, towards the Surface of 1-Ceres), by using an original technique created - and, in time, dramatically improved - by the Lunar Explorer Italia Team.

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