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I've been getting good results with rotations in the order of 10-12 degrees.
The main limitations are seeing and the mechanics of the mount- the same things that are limitations with the PHD2 centroid calculations used in guiding.
In automated mode the rotation is done automatically. The slewing takes place in calculated steps so that PHD2 can track the star. Plus the graphic overlay shows the direction of the adjustments you need to make.
ETA: If you look at the attachment I posted a little earlier you can see the "Ref Star" in a small blue circle and another small blue circle just nearby on the magenta arc. That is how far the tool slewed to get a result.
Last edited by kens; 02-10-2017 at 11:10 AM.
Reason: More info
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