Watched your video on the new PI tools. I am new to PixInsight (a couple of weeks now) and have also viewed your other video on processing; it was very helpful indeed. Just a quick question if I may regarding DBE; could (or maybe should would be a better word) it be run more than once on the same image?
Also, regarding running DBE on your reference frame prior to performing LN; after doing so, I understand that you use the DRE image as the reference in the LN tool window, but do you also include the DBE image in the list of target images, or just the registered image that you did the DBE on, or both?
I'm glad you found the videos useful Jim. You can certainly run DBE or ABE multiple times on an image. I've certainly worked on some images that have taken 2 or 3 pass of ABE and then another 2 or 3 of DBE to the get cleaned up.
David have you tried it with a previous fully integrated image?
Ie: integrate the old way
Then use dbe on that to be used as the reference frame for the localization?
I have done that Martin. Specifically, for a couple tests, I used a a stack from a previous processing effort intercepting after ABE/DBE but before deconvolution, stretching, etc. as a reference for doing a new StarAlignment/LocalNormalization/ImageIntegration pass. The only thing special I did was linear fit the reference frame to one of the subframes since the fit can be off after some of the weighting, etc. going on in ImageIntegration. This just made it so that the subframes intensities match up a bit better. I have no idea if this helped or not as I haven't done an experiment without it, I just felt it might be better to have the reference frame at least roughly similar to the subframe intensities. The results were similar to doing the 2 pass approach I mentioned above. That being said, if you have an image where complex gradients are a real problem and you aren't 100% confident of the evenness of the background in that image I would not use it as a LN reference.