the rosette nebula isn't that faint, and the ED 80 captures it well trust me on that one!
http://s700.photobucket.com/albums/w...lteredcopy.jpg
That was a quick try at the rose when my guiding was going all over the show, fixed that now so i will attempt it again!
IMO taking the image is about 20% of the final product
80% is in the processing and for some it takes years to master it as it isn't an exact science some images require more and different techniques.