I've tried to image this in narrowband for many nights, and its still so faint! I captured a 2-6 hours over clear sky nights over 2 weeks in September during mostly a new moon. There was a surprising amount of Sii in this target, but doesn't really pop out in any of the color combinations I tried (Forax, Dreamplease, Crazypanda, etc.) I ended up using Forax for this one. I think I need to get a more expensive Oiii filter because it takes so long to gather meaningful signal. I still don't think I got enough with 7 hours on Oiii.
A good chunk of this data was captured in bortle 6.5 skies during a new moon. I started imaging with a 2 panel for what I thought would cover the target. I was wrong and added two more panels later to fill in the edges better and the tail of the popped balloon. This resulted in a strange coverage area. After using MosaicByCoordinates and GradientMergeMosaic on each narrowband channel, I cropped it to bring a reasonable image. A challenging and exciting target to hit, that I'm sure I'll come back to, but wanted to publish what I had so far. This thing thirsts for integration time, and I must feed the beast!
If you want to see it in LRGB, I also
imaged it on my other scope (525mm Focal Length) which really shows how faint it is compared to this (1525mm Focal Length) narrowband image.
Mosaic - before cropping:
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