Hi Greg.
The way to do this is with a closed loop slew. It will get you where you want to be every time within a few pixels. You need to be able to plateslove the photographed image, then TSX will compare the offset and do a final minor slew to whereyou want to be. No guess work. This is what i do. You don't even need to be using a Tpoint model as far as i am aware.
Josh
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