Quote:
Originally Posted by pvelez
So I've been playing with this expression Rick - what does it actually do? I find it simply creates rings around the star. That can't be hat you intend is it?
Pete
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You need to apply PixelMath to the clipped Luminance mask (and change the name of "star_mask" if the star mask happens to be called something different.)
It should set values in the Luminance mask that correspond to stars in the star mask to zero, i.e. make black holes where the stars were.