Very nice Marc. Your set up frames the scene beautifully. The spider is nestled amongst a web of stars and clusters, pretty cool. It would be good to see the corrected luminance with dud subs gone. Sometimes less is more, especially if the dud subs are softening the combined image. I feel the image could do with some more *umpf*, perhaps a touch more colour saturation would help, or if you want to get a little tricky use a warming filter as a brush to selective areas -
http://www.photoshopessentials.com/p...enhance-color/ Good work.