Bubble Nebula

[MikeCM]

My second attempt at an HaRGB image - 60 mins RGB in 5 min subs and 120 mins Ha in 10 min subs. Quite happy with the outcome. Processed RGB images separately by stretching before combining them. Not sure if this has caused stars to be a bit too colourful. Is it better to process after combining images or do people process before?

[Sp@ce_d]

I’d normally pre process each filter set (lights/darks/bias) then align all using a single ref. Image. Stack each set then RGB combine and do any linear processing on the RGB nr etc. before the first stretch & continuing any non linear processing. Process Ha separately & use as Lum. Although I mainly use PI & hardly touch PS these days.