On CloudyNights, in the double stars forum, jjbroomco asked for some help with measuring the exit angle of drifting stars. I gave a few suggestions, such as repeating drifts, and verifying dead centre, if possible. He replied.
Great suggestions, thank you. I agree, the more data points, the better. I will try more than one drift. I do have a 12.5 mm reticle eyepiece that I use for GoTo alignments. I will give this a try as well.
Good stuff.
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