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Hi Jeff,
I've encountered that error a few times in the past, but usually for the obvious reason of the star either not moving far enough or moving off the image (or too close to the edge of the image).
Things to keep in mind (which you might be aware of):
- make sure the star is the only one in the FOV near it's brightness. I try to avoid any bright stars at all except the one.
- make sure no bright star moves into the FOV during the move
- make sure the star starts and ends well within the FOV (I keep it within 36 pixels of the edge seeing as 36 is used for the autoguider size)
I think I had the problem with my QGuider that it wouldn't calibrate properly. Same sort of problem. I think I ended up just putting in reasonable values manually, as I have enough experience to pick reasonable values. Not as accurate as doing a full calibration but is good enough for the setup where I use the QGuider.
Is backlash causing any problems? Probably not but a thought anyhow. If I calibrate in DEC I need to be quite careful of that. If you've rotated the camera then I'm guessing your DEC is your X. For that matter, do you have X and Y autoguiding enabled?
I've been told CCDSoft doesn't care what rotation the autoguider is but to be honest I've never tried with the camera rotated 90 degrees, only 180.
As for other programs - Depends on what camera you are using perhaps, but I've always had best results and easiest running with CCDSoft.
Roger.
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