I just couldnt help myself, this pic was taken by Richard Murray on my scope (GRAS G15) with relatively short exposures, and including processing with wavelets in Registax!!.
Luminance-20 min (5 min subs), Red-10 min (3.3 min subs)bin2x2, Blue-10 min (3.3 min subs)bin2x2
http://www.amarmur.com/rick/m104-1-20-08aLRsGBweb3.jpg
Its just amazing, and shows what can be done with carefull processing .(registax???, who would have thunk of such a thing with DSO ?).
His web site is
http://ricksastropics.blogspot.com/
Tell you what, its symulateously emabrrising and inspirational to see this, must try harder myself ;-).