Took all the 5128 data, and played in DSS until I got the BEST stack possible, with the least image artifacts and best detail. Put it into PS 5.1 and followed Bert's (Avandonk) upscale techniques - you may not agree with the theory, but I am a convert!
I believe it is a GOOD improvement over my previous 5128, that showed contrast hard edge rings to the bright central portion, which I could NOT correct without blurring or other destructive/manipulative techniques. The combination of exact DSS settings and the Upscale technique seemed to work for me. Still SOME noise, but that can only smooth with more exposure (or larger aperture - scratches chin looking at VC200L...)
Critique VERY welcome. No point telling me it's good if it has serious issues!
Link to LARGER version (reduced by 0.25 from the upscale):
http://www.astrobin.com/full/37110/?mod=none
JPEG average quality, with plate solve data:
http://www.astrobin.com/37110/