Found this in the archives from 2017, never processed. Think I'd been hoping to get SII and OIII at the time but summer imaging in Qld can be fickle between work, hols, crazy Christmas period. Anyhow, here is an HaRGB of a fav object of mine:
5hrs Ha (20 and 30min subs)
3hrs RGB (approx 1 hr each, 5 mins subs)
QHY9, FSQ106ED, dark skies.
Only regret is the flat fielding - not sure the old cal data I've used fitted properly, especially around the outside of the Ha field. Anyhow, here are Ha and HaRGB versions of the Rosette for your enjoymentt and critique.
