AF Green vs Red Curves

I like the new AF routine, no complaints, well done SGP.

What is the difference between a red curve or a green curve, as they both can end up with a successful result?

That line measure the quality of the quadratic fit. If it is acceptable by SGPro (>= 90%), then focus will be valid and the sequence will continue. If it is red, the quality of the fit is not great and the focuser will be re-positioned to a best guess position based on the bad fit and AF will run again.

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