Does anyone know what's the deal with the fairly consistent discoloration of the individual images? The edges are often orange and the middle blue. You'd think they'd colour correct this out when doing the stitching...

Also, are these [0] artefacts a result of adaptive optics since they shine out those lasers to keep track of distortions? And these [1] which seem to be the same but larger and less focused. I remember seeing similar ones on Google Sky years back but never really figured out what causes it.

[0] https://sky.esa.int/esasky/?target=94.25875681534997%2020.97...

[1] https://sky.esa.int/esasky/?target=218.7659069213465%20-59.6...