Cheers Humi
Yes Marcus mentioned he was a bit iffy about the core too..funny I don't see it as looking that bad really

...but then I processed it and like your own children it is harder to see things in them that others do sometimes
I am hanging to complete this project becasue I haven't imaged the sword region with the new 35mm chip FLI camera yet in fact I last imaged M42 back in 2006 with my 200mm lens. Perhaps another Helix type project..?...6 nights of pain in the R's

but the final job is worth it in the end
Your scope is nothing sneeze at either
Mike