Green galaxy?

https://www.legacysurvey.org//viewer/?ra=183.7690&dec=33.1977&layer=ls-dr9&zoom=12

What is this and why is it green?

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Hi,

In the north (above Dec ~ 32 degrees), the camera we used for the red has an issue with diffuse light (like medium-big galaxies) where we end up subtracting off too much light from the outskirts of the galaxy, so they end up with a blue-green halo like this. You’ll see this all over the northern part of the survey.

cheers,
dustin

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That is really interesting. The issue is like a happy accident for now. False color image