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Hi Leon
Im no G11 expert, however experience in my proffesion has taught me that when ever you have a closed loop type system that fails, you have to open the loop and fault find from there. In this instance stevie wonder could tell you that the guiding is stuffed. A simple way of isolating it to either mechanical or electronic could be unplug the auto guiding and see what the mount comes up with by itself over a minute or two. You may find that the guiding is not perfect but it definitely is somewhat better in a way, and you may not. The only experience I have had with images that look like this was a mount that had faulty electronic operation. The tracking would be ok until the system started making huger error corrections to try and get the guide star back.
If you get an identical result then you probably needn't look at the error correction side.
Hope this helps.
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