[astrospotter (Mark)]

Sounds like it is a no-go. Yes the f/6.3 is made for SCT and that is what I used it for as 11" SCT for a few years because the SCT has a mighty narrow FOV with such high focal length.

Also thanks for input on 80mm actual tests.

Only if there were a reducer meant for this WO f/6.5 scope would it have a nice optical match is my take away (shy of 'just buy a new scope')

Thanks all,
Mark