Hi Paul,
it is brand new and already contacted the supplier. They will send someone around to have look.
The thing is that haven`t had a Newton this big before (only 6") and it might well be that thermal currents have a different impact on a scope this size. The other thing is that the 6" has premium coatings whilst the GSO - well its aluminium isn`t it?
So there might be nothing wrong with the scope.
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