Between 22:50:50 UTC and 22:53:29 UTC Opportunity’s Pancam took three images with narrow band filters in the three basic colors, from which it was possible to obtain this extraordinary true color image of the Martian soil.
To end an extremely productive day for Opportunity, a beautiful assemblage of porous rocks probably of volcanic origin (although personally I do not know of important volcanoes adjacent to the Gale crater).
I do want to point out, however, that such porous rocks can act as traps for moisture that condenses during the evening, night and morning hours. I wouldn’t be at all surprised if any lichens preferred such rocks for their settlements….
Unprocessed HD RGB image (raw): https://image.ibb.co/guv2SH/Oppy_Sol5046_06.jpg
Original BN images:
Red (735nm with 20nm bandwidth)
22:50:50 UTC
15:51:58 LTST https://mars.nasa.gov/mer/gallery/all/1/p/5046/1P576149488EFFD225P2449L2M1.HTML
Green (535nm with 20nm bandwidth)
22:53:14 UTC
15:54:18 LTST https://mars.nasa.gov/mer/gallery/all/1/p/5046/1P576149632EFFD225P2449L5M1.HTML
Blue (432nm with 32nm bandwidth)
22:53:29 UTC
15:54:33 LTST https://mars.nasa.gov/mer/gallery/all/1/p/5046/1P576149647EFFD225P2449L7M1.HTML
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