Thanks all for your replies, quite helpful.
Gary, interesting you still prefer one eye for deepsky - is that due solely to light loss of BVs?
gyro topple, thanks for the first-hand feedback on the Burgess unit - where did you get them from?
Mark - don't I need to move the primary mirror forward? I could shorten the tube at that end, but its a bigger hit on tube balance.
Cheers,
Mark
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