At 13:27:23 UTC Mastcam Right was filming Fobos in broad daylight in a clear blue sky.
Fobos is visible to the right of the “famous black dot,” a flaw in Mastcam Right that has often prompted imaginative interpretations.
The original image is a black-and-white encoding of the Bayer mask that has been converted to color through a process called “debayering” or “demosaicing.” In addition, the photo has undergone noise reduction due to Jpeg compression, white balance and a slight increase in microcontrast and color saturation in order to make the colors more similar to what the human eye would see.
Original image: https://mars.jpl.nasa.gov/msl-raw-images/msss/00045/mcam/0045MR0002090020102664C00_DXXX.jpg
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