This is a bit of a first for me processing with PixInsight moving across from StarTools. Appreciate all advice. Think DBE was under sampled and have not touched the stars at all (something to investigate). In Pixel Math R was Ha, G was (I think?) Ha 40% and S2 %60 and Blue was just S2. Lots of fiddling so can’t remember if this is completely correct. Only have 2 hours of Ha data and an hour of S2 data (120s subs). The O3 filter arrives next week. All taken through an ED80 on an HEQ5 with a ZWO ASI1600MM-Pro. I think I should have spent a lot more time on the monochrome Ha and S2 stacks to clean them up before combining. Plan to revisit when I can get some O3 and more Ha and S2. Astrobin link here:
https://www.astrobin.com/full/351715/E/?nc=Brasspoodle