Thanks all ! the sombrero is one of those galaxies that never fails to please visually or photographically and the bigger the scope the better it looks!
Anthony, on your piont about imaging without tracking " I think that you would need some form of tracking on your Big Dob and Maybe
Meads new DSI imager because its more sensative it could go deeper in a shorter exposure time, a bit of stacking and you would be there!
So after all that dribble the shorter answer is yes !
Louie