this post was submitted on 03 Dec 2025
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For future missions they could probably detect a sat pass by an obvious bright dot moving in a straight line and then prevent that small area from being added to output photo. It would still be an issue for Hubble and a range of other older telescopes but some newer ones could receive a software update given the HW could handle the change.
FWIW, what you described is done by hobby astrophotographers. Satellite rejection during stacking:
https://live.staticflickr.com/65535/51169334733_c2f9b44508_o.png
If you detect it the image is already ruined. You need to predict where it'll be.