Quote:
Originally Posted by Hagar
I gather what you are saying is the guide scope should be centered on the target or at least very close to the center of the image and the guide star should be as close as possible to the center of the field as is possible
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Correct. Unless your PA is spot on guiding on a star further away from the center of your image will make everything waaay worse. Like a moment of inertia with a big long stick
I'll post two shots to see how dramatic the difference is. Same guiding, same conditions, just picked a different star closer to the center.