I am still struggling with backfocus, tilt, astigmatism, collimation, etc, with my f/4 Newt which I guess is over 4x slower than your f/1.9. Like you, incremental changes from one night to the next are helping. I am also guilty of getting carried away with the pixels and sometimes forgetting the amazing overall picture! Looking forward to seeing how you go with hyperstar over time.
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