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I have been trying to process my first comet in PixInsight, but the effort has been a total flop. I followed the steps in this YouTube tutorial, but my final comet-aligned image looks like this! Does anyone have any idea how to avoid or get rid of the mis-aligned stellar artifacts? Thank you for your advice!  |
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| This happens if the comet is moving too „slowly“ with regards to the background so pixel rejection can‘t get rid of all the stars. I‘ld try lowering the rejection threshold and, if that doesn‘t work, to generate 3 stacks, each including only every 3rd sub and then stacking the three resulting imaes. That said, I still have comet data where that didn‘t help me, too. You can also try and use a star removal process on each sub. |
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| These are terrific suggestions, thank you very much! |
