Okay I'm terribly at a loss here in regards to extracting dual band data from my subs using l-Extreme filter.
I've done it before with the rosette, but for some darn reason it's not working for a portion of the veil nebula. APP just gives me a green mess if I process it normally. Doesn't do jack if I extract both ha and oIII other than give me monochrome images, or a blank screen that can't be stretched at all.
What am I doing wrong here? Even a normal image stack (I choose RGB right?) gives me a nearly unusable image (1st pic)
the second pic shows you how all my subs look like.