Astrophotography with CG-4 Mount?

I've done some fairly acceptable widefield SLR film astrophotography piggybacked on a CG-4 equatorial mount. Now before I move into prime-
focus astrophotography with an old Vixen 4" f/6 reflector and invest on a few more gadgets, what kind of astrophotos can I expect with this mount? Will it be futile? Acceptable? Your thoughts will be greatly appreciated.

Thanks,
Joel