I didn’t have “save auto focus packages” checked (will be sure to do that next time), but want to see if anyone has tips on how to best configure autofocus in the latest beta. This is with an SCT 11" Edge, OAG, DSLR, IDAS D1 filter. What I’m seeing: I’ll see the HFR look something like, from left to right:
4.0 / 3.5 / 3 / 4.5 / 5 / 6 / 5
First – I’m not sure why the HFR is getting worse then better at beginning of the run (right side of the numbers). I saw the same behavior before I put backlash compensation to accommodate for mirror shift, but that shouldn’t be the cause now. Not quite sure what is going on.
Second, and mainly: AF keeps expanding the range presumably to get a better V. The problem is, the stars quickly become donuts with an SCT so I have to keep the step size pretty low and settle for a shallow U. Once the range starts expanding, it seems to runaway a bit expanding the range several times. I hit cancel, and the focuser is returned to some location (the middle of the new expanded range?) but that’s way out of focus now.
Is it possible to disable the range expansion? Any other tips to get a solid run? Unfortunately clouds rolled in before I got a chance to do too much troubleshooting.