Interesting insight Fred. Though I think you're talking about SBIG CCDTrack for the ST4. The software used a Hysteresis algorithm that took into account the RMS error of the object (star) in pixel X and Y for past 16 guider cycles. I guess you could call it adaptive tuning! I suspect this was also incorporated into CCDOps, but not sure about CCDSoft considering its a collaboration between SBIG and Bisque. I feel certain many other camera control applications now use similar algorithms.
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