I have found that Decon can help almost any type of image, if used selectively. There are many decon methods out there but I have found the best way for me is to use different strengths and blend the best of the results together. One mild strength to tighten the non-saturated stars and a strong one to bring out the details like in a galaxy core or dust lane. Then using layer masks with normalized streatched frames blend in the details without draging in the noise or the messed up stars.
I call it Muti Strength Decon Layer Blend and you can see a basic step by step here.
http://www.rdelsol.net/ProcessingToo...ool%20Box.html
There is also a write-up in the May S&T on it.
Kindest Regards,
Ken Crawford