Robin: I agree with you almost but not quite completely.
Part of my problem is that I do not have a good definition of the term “astrophotography” other than it appears to place pretty pictures much higher than their scientific value.
Is planetary imaging “astrophotography”? I don’t know. Neither do I know whether alt-az mounted DSLRs are used for “astrophotography” but they can certainly take pretty pictures, as well as take images which when analysed yield good science.
