Harry-
I have tried the same but after success with my first few PI images, I have not been able to do the second 2-level HDRWavelet step because it introduces bad ringing in some bright stars (dark spots in their centers). I've tried adding star masks, built per your tutorial on that subject, but (different issue) they often do not generate masking over bright stars on top of the most nebular regions. I use Painting (dread) to clone some of those missing stars from the image onto the same xy coordinate locations in the mask and then apply the augmented masks. Yet, none of that has prevented the ringing.
Any idea what am I missing?
Thanks.
Cheers,
Jeff
