Bright asteroid dark image

http://www.legacysurvey.org/viewer?ra=184.2130&dec=-3.1575&zoom=16&layer=decals-dr5

Question from Galaxy Zoo moderator Budgieye;

“Bright green oval spot, is an asteroid but why is the rest of the image in DECaLS single image dark? Incorrect exposure? Just idly curious. All the other images in the set are speckly.”

1 Like

Yeah, it’s just because the “stretch” in the single-image view adapts to the brightness of the image – so a really bright object makes the speckly background noise less apparent.

Thanks for the quick reply, I’ll relay le message!

1 Like