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Thanks Stefan
I am pretty sure it is a problem with the mirror.
When the RASA 8 arrived , the mirror was loose and the first image showed severe mirror flop.
I tightened some Allen screws which were loose and the next image was the horsehead which was much improved but still has some tilt as you point out.
The RASA 11 has 2 mirror locking screws which have been removed from the RASA 8. The RASA 8 Manual claims the mirror is permanently factory aligned
I have contacted Celestron for more specific instructions.
Otherwise I have been very happy with the scope.
cheers
Paul
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