Never bean very good at galaxies so I keep trying, hear is another from last night may be a bit better, will have to get F/R to work it is a Meade 6.3 so I will need about 110mm of spacing I think.
Peter the standard SCT type FF/FR (F3.3 and F6.3) do not work well with the RCX/ACF type scopes as they are trying to correct for what is not there. The AP CCDT67 works OK as a FF/FR. See Freds (Bassnuts) site for what can be done with this unit. I have one but have not used it yet as am too busy playing with refractors.