Recently I got a new telescope Skywatcher 130pds and the mount is Celestron Advanced VX which supports a payload of up to 14KG. For astrophotography the mount is the most important thing in a telescope setup. For deep sky objects you need long exposures and for that your mount has to be rock solid and not only that it should track well without vibrations. The second important thing is of course the tube itself but that has to have fast optics and a good focuser.
Anyway, for deep sky objects you actually need shorter focal lengths something like 400mm to 750mm, any higher then that and you are asking for tracking issues.
Last night was partly clear so I took my telescope out and got some shots, this is one of them. Orion nebula is relatively easier to photograph and looks great too.