Quote:
Originally Posted by Peter.M
My guess, they are stars oscillating with bad tracking. There are no other stars present in your images to indicate good tracking, and the shapes of each are identical, again indicating that they are still and your scope movement is the cause of the motion. I wouldn't be surprised if it was a wind gust.
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That would explain the differences in colour in both patterns - nicely done. And once disturbed, the scope would take time (a few seconds?) to settle making stars oscillate in the image.