Hi Everyone,
When I combine and process Ha, OIII, and SII, I always end up with Ha fringing around stars. How do you deal with this? I uses Affinity for processing but happy to hear about other applications that deal with this.
I notice how others get nice 'white' stars in their images. How is this achieved when Ha is often the dominant signal?
star colour in NB is meaningless, so duplicate the ha layer then delete the stars in each of the other OIII SII Ha layers, duplicate the starless Ha channel. then apply a difference filter between the duplicated Ha layer with stars and the duplicated Ha layer without stars and you will have only small Ha stars in that channel. Make that star only channel white (with zero hue or make mono or whatever if not already white) and you end up with 3 starless channels and another channel just with small white stars. blend to taste. OIII stars are always bigger than Ha stars which causes fringing.
