I like the regular version, nice work with the fainter elements, you've really pulled out the detail,
The starless version....... Don't like the artifacts particularly, I thought you could get filters that just offset the Ha and you subtract one from the other.... Or something like it....
As an exercise, can you select the stars copy them onto a black version of the image, move them 8 or so pixels to one side, use that to create a mask and select that space on the original, then duplicate, move those bits back the 8 pixels, blend back into hhe original image and blur slightly........I'm sure it could be done and not leave any artifacts.
