First attempt at the Rossette. Went a bit overboard with subs, but its the most data I have used for an image to date. Taken Jan 2022. Its Taken me a few months to get around to posting this. Learnt a few more IP techiques since then. Might have to go back and start again.
Tak FSQ, QHY 600M, astrodon filters, 20 x 600s subs per channel. Astrobin link. https://www.astrobin.com/lejkq1/
Quite good but you've had some trouble with your flats and gotten some vignetting there.
Greg.
Thanks for pointing that out Greg, the OIII particularly is not good. I processed it a few months ago and missed this. I will have another crack at the processing.