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Greg,
Why not guide for a lot longer ?
Have you checked the SNR of your guide image ?
Worth checking every time.
The P-ME can handle an awful lot longer and it really doesnt need to be pushed around with the seeing that often.
Assuming you have good polar alignment - try an unguided exposure of a few minutes (or more) just to assure yourself it can handle more than a few seconds !
Unless something is not right, I bet you couldnt tell the difference.
Rally
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