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Thanks for the replies , I do remember having a 10" skywatcher on my neq6 a few years ago and finding that I had to orientate the focuser in a particular way to get that sweet balance point , that with the clutches on the mount open you can point the scope in any direction and it does not move. What worried me was with over 1 kilo of camera and OAG on the focuser I might have a problem . I looked on the net and found all sorts of answers involving counter weights on the opposite side of the tube.they said they'd calculated the moments about the optical axis to derive the value and position of the counterweights.
So the consensus of opinions is that the tube only need be rotated to achieve the "sweet" balance point.
Regards philip
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