taada green langsung dlm gambar yang d pos. red dan blue saja

saya guna PS2
click color sampler tool at the darkest sky area of the image. in my case i choose somewhere on the top left hand side. take care not to be near any stars. change sample size to 5X5 Average.
check RGB values at the info click window>info
nak cepat sekali introduce green
click image>adjustment>autocolor
watch the info for RGB values
then click image>adjustment>autocontrast
watch the info for RGB values
then click image>adjustment>color balance
adjust slider and watch the info RGB values. play2 till you get the multiples of RGB of 3:3:4 for the sky where the color sampler is.
don't forget for the Tone balance to check Preserve Luminosity and click midtones
pos result disini lah

silalah pos gambar yang belum d process hanya resize for the web.
cheers