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Impressive small stars and stars in general, plus detail in the neb and the dust lanes. But the Ha blend has gone a bit salmon. This is from using Ha as a luminance probably.
Ha is best added as its own layer in screen or soft light blending mode and as a hue/saturation layer clipping mask (google astrodon screen mode for blending narrowband images).
Even then I find I have to trial and error a lot with various blending modes and saturations/lightnesses.
If you have a nice build up of colour you can get away with using a bit of Ha as luminance layer but usually not more than about 20% opacity where the increased detail is offset with the onset of the salmon colour shift.
Others use a blend of Ha with red in the red channel but you don't have any instant control over that blend. I suppose users must know from experience what amount to blend in to get it right.
Greg.
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