Between 22:06:54 UTC and 22:09:29 UTC Opportunity’s Pancam takes three images with narrow band filters in the three basic colors, from which it was possible to derive this extraordinary true color image of these Martian rocks.
The color variations observed in the rocks taken from this picture lead me to hypothesize that they are due to something that affects only the outer surface of the rocks themselves. Obviously it is only a hypothesis and not a certainty …
What is your opinion?
Unprocessed RGB HD image (raw): https://image.ibb.co/mQVeCH/Oppy_Sol5049_01.jpg
Original BN images:
Red (735nm with 20nm bandwidth)
22:06:54 UTC
13:14:04 LTST https://mars.nasa.gov/mer/gallery/all/1/p/5049/1P576405777EFFD225P2352L2M1.HTML
Green (535nm with 20nm bandwidth)
22:09:15 UTC
13:16:21 LTST https://mars.nasa.gov/mer/gallery/all/1/p/5049/1P576405918EFFD225P2352L5M1.HTML
Blue (432nm with 32nm bandwidth)
22:09:29 UTC
13:16:35 LTST https://mars.nasa.gov/mer/gallery/all/1/p/5049/1P576405932EFFD225P2352L7M1.HTML
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