Thanks for the info Colin.

PS For others, note that ACP has the exact same MaxPoint pointing corrector engine integrated within it, enhanced by automatic adaptive addition of mapping points during the ACP observing process, with the new mapping points replacing the oldest, and prevention of "clustering" of the added points due to multiple plate solves in the same area while repeatedly imaging the same target.

PPS The idea of using MaxPoint or ACP's pointing corrector is to get the pointing down to within a few arc minutes, making subsequent plate-solve-based pointing correction reliable.It's not an alternative to a higher-order modeling system such as PlaneWave's Point XP or Bisque's TPoint/Protrack, both of which model more flexure sources and also correct dynamically during tracking.