Objects with weird behaviour ...
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by
merkosh
There are two objects with #weird behaviour ... #jumping around instead of following a straight course. What's that ?
One could suspect a (rare ?) group of periodic stars, but the objects are too similar for that (IMHO).
Posted
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by
hightower73
they are lens fault artifcacts, could well be dust on the lens when the pictures were taken, they always follow the same triangular pattern and feature quite a lot on the sets, most now ignore them as they are so numerous.
Posted
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by
AstroTinker
in response to merkosh's comment.
merkosh,
Search on the tag #ffd - flat field defect. Lots of discussion out there on these boardsPosted