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re second graph posted, whatever it was affected both axes. Clutching at straws, but possibilities may be:
- sharp wind gust?
- sudden scope movement, maybe slipping slightly in tube rings or tube rings not rigidly attached to bar?
- Guide camera able to move very slightly?
- mount not locked down tight on tripod?
- are the three dovetail puck screws completely tight on the EQ6?
- power supply noise spike - eg when a fridge or aircon switches on/off.
If this was taken with an OAG through your C8, it could be mirror flop - I see similar sharp motion when the mirror in my Newtonian slips sideways on the supports.
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