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Yes, but not to be pedantic. PEMpro drift alignment gives a great result for just that one area of the sky. Image in a completely different area and you may find that drift is much worse. Of course, a good model + PEMpro is going to correct that through Protrack. At least that is my take after reading endless discussions on the subject (of which I tend to agree with Patrick a bit more than Ray G)
Peter
PS My understanding of a "fiducial star" is just a star at a position in space such that if you mechanically move the mount to centre on it will in one step account for calculated errors in ME and MA.
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