NGC281 in SHO narrowband palette, with Ha integrated as Luminance layer, as according to to Nik Szymanek approach to Sulphur-II Luminance Compositing.
Ha layer (luminosity blending) added in starless and stars separate layers.
SHO stunning integration
Data recorded by Officina Stellare ProRC 700 and QHY 600M CMOS, subframes at 120sec, -5 C, from IC Observatory of Spain, telescopelive network.
Astrobin: https://www.astrobin.com/2f69ta/B/