Looking good Baz ... do you have a field flattener in your imaging setup ? Might be worth it to get rid of the coma in the corners of your images ... only if it bothers you ofcourse mate !
I wouldn't suggest a reducer/flattener as your fov is already quite wide ... just a flattener like an MPCC or the like. I bought the WO Flat 68 4" field flattener with my FLT110 but I actually prefer to use my MPCC with my SBIG camera.
