Great idea, thank you - both files are attached - am very interested to hear what Supermodel produces!
Thinking over the changes last night - it struck me as unusual to the lay person how whilst adding coefficients that decrease sigmas and hone RMS (by adding about 8 harmonic terms RMS went down around 18 - so +/- 9 arc seconds pointing - which seems superb - the polar alignment corrections swung by quite a bit - far more indeed than the improvement in RMS pointing - is that usual?
As Ray Gralack says - doesn't inpsire confidence when a slight tune of a model significantly alters the polar corrections it offers!
Matthew
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