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Photos from Mars are all composites of red, green, and blue images. The way they put the colors together back on Earth depends on the purpose of the image. They
by Kye 6y ago
Photos from Mars are all composites of red, green, and blue images. The way they put the colors together back on Earth depends on the purpose of the image. They might have learned a little from SpaceX on PR and started biasing published images of the Martian sky toward blue.
Using three separate filters that are each one different wavelength lets them capture more information than something like a Bayer filter where all three colors share the same space at the same time. Mars doesn't change fast enough to make three separate exposures a problem.
- zxcvbn4038 6y agoYes, but the Viking landers were sensitive to six color wavelengths plus infrared and they had color calibration charts attached to the landers. They knew the true colors of Mars in the 70s. I’ve heard that they colored the sky and rocks red because they thought the public expected red and maybe that’s the reason, but they’ve been transitioning it to an increasingly blue sky and grey rocks ever since.
- tdeck 6y agoI searched for more on this and found a great article with photos: https://cornerofthecabinet.com/2015/10/05/what-are-the-true-colors-of-the-martian-landscape/ https://cornerofthecabinet.com/2015/10/05/what-are-the-true-...