NGC 7000 North America Nebula
frames : Ha x 12 x 15m, OIII, SII 3 x 15m, 2 x 20m , 2 x 30m
mix : R = 50%*Ha + 50%*SII, G = 15%H*a +85%* OIII, B = OIII
frames : Ha x 12 x 15m, OIII, SII 3 x 15m, 2 x 20m , 2 x 30m
mix : R = 50%*Ha + 50%*SII, G = 15%H*a +85%* OIII, B = OIII
Cloudbreaker 