Eye in the Sky

https://decaps.legacysurvey.org//viewer/?ra=194.7263&dec=-61.4594&layer=decaps2-riy&zoom=16

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Welcome! Funny-looking thing is a foreground star in our own galaxy. The actual size of the star will be a lot smaller than a pixel. The light from the star then spreads out around it which forms the disk. Sometimes the star gets too bright for our survey, too much light has passed through, which messes up the pixels and makes weird colours, shapes, and artifacts in the image.