Your FSA and camera are part of the equation.Thanks for the link Pileatus but I'm not sure what you mean when you say, "There's more than the scope to worry about". I'm intrigued ... please expand your thoughts.... :eek!:
Joe
I use an ED82 with the 30X DS eyepiece and it's as sharp as any scope in its class. I'm not sure what lens you use but that's where I'd start your analysis. If you don't get a sharp image with the zoom or fixed lenses then the scope has a problem. Otherwise...well...photography is challenging.
Good luck.