Thanks for the replies! I have found the issue.
Going back to fundamentals, I re-read some tutorial pages from different people on the web and followed some of the recommended settings, which resulted in me changing the star detection threshold from 80% to 10%.
The number of registered stars jumped from ~450 stars to ~5000 stars. This identified more of the outer stars that move in/out of frame, and allowed them to more consistently be moved as needed, and has corrected this issue.
Edit: The stack now takes significantly longer, but that's the trade off, and I can live with it given I can now use all of my images!
|