I finished this M51 last night. It has a total of about 15 hours on it. 47 x 600 luminance and 45 x 600 RGB, all binned at 1. This version is slightly cropped. Here's the link: Albert http://www.flickr.com/photos/49526053@N04/8736705964/in/photostream/lightbox/ -- See message header for info on list archives or unsubscribing, and please send personal replies to the author, not the list.