Asteroid Zoo Talk

Objects with weird behaviour ...

  • merkosh 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).


  • hightower73 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.


  • AstroTinker by AstroTinker in response to merkosh's comment.

    Search on the tag #ffd - flat field defect. Lots of discussion out there on these boards