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Are your images reduced (to remove dark & bias) ? It looks to me like you had trailing, corrected for by aligning and stacking the sub frames but because of the guide error you have the noise trailing.
I'd suggest you need to remove the noise (if you're alrready doing reduction on your images then find some other way to hide it - darken the image, processing techniques of various kinds...).
Remember that because your stars have been align correctly that means the noise is now drifting and hence you end up with streaks of noise instead of streaks of stars.
Roger.
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