Just started doing NB recently and ran into a problem I haven't been able to work around. M27: I have my RGB image (and an LRGB version that turned out decent) but I want to combine some OIII and Ha. Tried using the NB script but the result completely washes out the interesting interior of the nebula while adding to the faint nebulosity outside the main body. The OIII and Ha images are very bright and somewhat featureless compared to the RGB image.
I've investigated a couple of NBRGB combination techniques and none seem to work for me on M27, other large nebulae, no problem, but M27 is giving me fits! Someone point me in the right direction.
Thanks
John
ES127mm-FCD100, 0.7xFF, QSI-683