Thans to all for feedback ..
@Stuart .. usually i don't use to take a HRGB or LHRGB (VdB142 is an LRGB) .. but when i tried i added Ha to luminance and color with a lighten layer in PS. In case of HGRB i usually create a synthetic Luminance. Try to ask in a dedicate thread .. there are some of the best AP in this forum using this composition.
All the best,
Leo
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