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Those are typical of very tight image compression routines attempting to compress areas with significant detail and very bright light.
Originally posted by Kano It still seems possible that its just an artifact from some image-processing somewhere down the line. There are those strange digital washout effects on bright reflections from the rover also.
Measurements also showed that the Martian atmosphere always had some fine dust suspended in it. The dust particles vary in size from smaller than visible wavelengths (0.4 - 0.7 micrometers) to as large as several tens of micrometers. (A micrometer is one-millionth of a meter, or about 0.00004 inches). Sky color measurements from Viking Lander 1 have been used with computer simulations of light scattering to estimate that the dust particles contained about 1% by volume of an iron oxide mineral known as magnetite (a black, opaque material). This mineral absorbs sunlight more effectively at blue wavelengths than at red wavelengths. Scattering (including absorption) of sunlight by the dust particles in the Martian atmosphere therefore accounts for the sky color. The scattering is more complicated than the simple Rayleigh case because the dust particles both reflect and absorb the sunlight, and because the presence of 'large' particles leads to more uniform scattering among the different wavelengths. If the dust did not absorb any sunlight, the Martian sky would appear whitish, since all wavelengths would be scattered to similar degree, much like sunlight scattered by clouds.
I'm getting close by swapping the Red and Blue channels in Photoshop... more soone.
Originally posted by Kano Is anyone able to recreate the effect in an image processing program?
It's a bit more than that... there is some modification after swapping the channels that I'm trying to reproduce.
Originally posted by Springer Is it not obvious that the problem is the blue and red channels are inverted? Unless I am missing something here, EVERYTHING that was blue is now red and visa versa...
ATSNN "Top Stories" and "Alerts" appear in several forums.
Originally posted by Colonel Why is this in the mudpit?
Note that the image of the true-color sunset shown at the top of the FAQ page (click below on FAQ) shows a red sunset sky. The sun, however, is surrounded by a blue halo. Why? The dust in the atmosphere absorbs blue light, giving the sky its red color, but it also scatters some of the blue light into the area just around the Sun because of its size. The blue color only becomes apparent near sunrise and sunset, when the light has to pass through the largest amount of dust.
Originally posted by DaRAGE
he only reason our atmosphere lokos blue is because the Earth is covered with something like 70% Ocean/water.
That's why we have our blue atmosphere.
You find an ocean of water on mars, then i might accept a more atmosphere theory.