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Thanks for your reply Dennis.
My intentions were to improve tracking for short duration imaging (30 seconds max).
I know that field rotation is inevitable with an Alt-Az mount. I was hoping that autoguiding would improve tracking so I could eliminate tracking errors in my images. Only 2 or 3 images out of 10 are suitable for stacking and I would like to get a better success rate.
I found that anything over 30 seconds a small amount of field rotation will start to appear. Gradually over time field rotation will come more and more apparent in the images but the stacking software will remove it.
Will using autoguiding eliminate tracking errors and give me a better success rate to getting round stars in my images?
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