Original issue discussed and illustrated here in detail…
https://forum.sequencegeneratorpro.com/t/bullet-proof-auto-focus-with-platesolving/11834
I started this thread to see if we could interface with PWI3 to help resolve the original issue.
IMHO, we don’t have a curve fitting issue. The issue is not rejecting outliers mostly caused by double stars and small galaxies.
KG