Quote:
Originally Posted by Peter Ward
I'd have to observe with sensor placement errors notwithstanding, my QHY600M fits into the CFW flange with about 1mm or so of play. Torquing up the grub screws without being mindful of this guarantees the sensor will not be perfectly central to the optical axis.
That said, building a pointing model with a mount, while doing so at random camera angles would not be a good idea....but the resulting pointing model with a fixed orientation should still be quite good.
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Absolutely! But, one can have a great model that is out by 100s of pixels if you slew at a different rotation angle, no? In my case if I make a model at North up all is perfect as long as I slew at North up. If I rotate 180 degrees my pointing is off by 1 mm!
Peter