Attached is an image taken with my Vixen VC200L at f18... Standard f9 Vixen with a 2 X powermate. I was a little worried about the 7 X 300 sec exposures required at this focal length and the ability of the G11 and Q Guider to guide well enough to resolve this Glob (NGC104)(47 Tucanae).
There is a little star drift but on the whole I am fairly happy with the end result.