Hey Col, that's impressive stuff with big impact!
IMO - I prefer the red one aesthetically, the big stars have not been blown out as much as they have on the other ones.
The over sharpening is interesting and dramatic, but to paraphrase Strongman Mike - "Gaseous structures, probably should'nt have too hard an edge". So is the Ara wall gas, dust or both? Hmmmm
If anyone knows the answer, it's probably you though!


(Sigh) I dream of round stars like yours - still havn't sorted out my issues....