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When I write unguided on the description of my images, it means I have not used an auto guiding program such as PHD (Push Here Dummy by stark-labs) and a guide scope to keep the mount pointing at the guide star. So usually exposure of around 2 minutes are easily obtained, longer if I spend more time of polar alignment, but longer does show Periodic error of the R.A. worm drive, without the Autoguiding.
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