This is what the original looked like after stacking 20 light frames (3 min subs) with 45 dark frames in DSS.
You can barely make out the red portion of the nebula.
This is the processed version from Photoshop.
I exported a tif and used StarNet++ to remove the stars so I could further process the nebula without affecting the the color of the stars. I use the stand-along version of StarNet++ and followed these instructions I found on CloudyNights to install it on my MacBook. Below is the starless version after removing all the stars.
I then opened up the starless version in Photoshop and layered it on top of the processed layer. I adjusted the starless layer opacity until I liked how it looked. The results are below with the combined starless (layered) and processed final version.
