Quote:
Originally Posted by Andy01
Thanks guys,
Well diagnosed, both of you. I was on soft wet grass and the graph went crazy at first. Tool a while to settle it on Alt, went to az and it was pretty good. Then went back to Alt and it was spot on. It must be as you said Naskies  |
"Spot on" worries me ... In your OP your said the red line was flat. You are always going to get
some movement. Is it possible that you forgot to turn Dec guiding back on? If so, and you went back from dX/dY to RA/Dec in the PhD graph, the red line would be dead flat, but that's because you are not guiding in DEc, not because you're perfectly aligned.
That could explain how the scope could sink into soft ground but nothing showed up in PhD.