Why are SDSS images of a star looking weird?
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Kowbell
SDISS images show this object breaking up. What should I classify it as?
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lrebull
scientist, translator, admin
That is .. odd. I am not sure what's going on with the SDSS images. SDSS i and z are definitely the weirdest. I think it may be just a very bright star.
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fireandice
Off the crosshairs, not round.
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debastroc
scientist, admin
SDSS images saturate on anything remotely bright, so what you are likely seeing are saturation artifacts. In a more reasonably displayed image, you would see that the object resembles a doughnut since the detector was "burned out" in the middle in i and z.
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morganism
Could this be a lensing effect ?
Sure looks like low IR arcing around a high gradient to me.....
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lrebull
scientist, translator, admin
No, in part because the arc that you see here isn't in the IR - it's in some of the SDSS images. If it really were a lensed arc, we'd see it at more than one band, and it wouldn't move around like this.
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docclay
I knew if I looked hard enough I'd find what I was looking for. I sometimes see the objects go out of round in a few frames in the SDSS views I see. I've wanted to classify these objects as round with some saturation artifact. Usually in the higher frequencies the glare usually dissipates. Does this sound right to you?
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