I thought I'd go over some M42 data I collected in December and combine all the frames I had collected over two nights a total of 51 frames 3hrs 42 minutes, no darks or flats applied. This is a combination of 60, 180, 330 and 600 second subs taken with a modified 350d using the RC and WOF2 reducer
link
http://www.flickr.com/photos/mylotia...7799/lightbox/
The original image has been cropped due to some obvious join lines that needed serious processing work to hide. The 2 nights subs did not line up that well for obvious reasons when you don't have a permanent set up and lousy PA
Hope you like this rendition