Star halos appear after integration

[astrodoc71]

This is occurring for only the binned color channels. I register all images binned and unbinned with an unbinned luminance reference, then integrate each channel separately. It doesn't seem to matter what algorithm I use. I have a large number of subs (30+) for each channel.
Any troubleshooting ideas?
Thanks
Dave

[georg.viehoever]

Screen your source images with Blink. Maybe there developed dew on the lens, or there were some weak clouds.

[troypiggo]

Can you post a sample of the image?

[astrodoc71]

Hmmm. I think I see the problem. The binned data is not good. When the binned data is upscaled, the problem stars only get worse. May not be a fix for this. Anyway, here is the red channel fits file which is result of integration of all red subs:
https://www.adrive.com/public/6nKbaF/M101%20red%20mean.fit

Here is a single red sub.
https://www.adrive.com/public/r5xnqE/00001396.NGC_5457.FIT

If there is a way to salvage it let me know
Thanks