[raymo]

We seem to be hijacking this thread, so I'll close this discussion by saying
that I'm pushing 80, and I'm finding repeatedly setting up my gear and
PAing a pain in the rear end, so I just tailor my exposure times to how
well I've PAd on the night. Best I've managed so far is 160secs. I can't
afford a coma corrector; trying to get other aspects of AP right before
worrying about coma. In the meantime I crop the worst of it out.
I used to drift align years ago, but can't be bothered now.
raymo