Quote:
Originally Posted by g__day
Agreed,
I still wonder why PHD is issuing such a large move that it takes the guide star out of the search frame?
Possibly the star jumps say 1 pixel left by seeing then PHD issues a 1 pixel left correction - sees no change so does it again - then the seeing reverts and the star is 1 pixel to the right - but if this is the worse case then the star should only be 3 pixel out of position - not 12 or 14.
Amazing how frustrating this is!
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I think that it moves much more than this because it is correcting for backlash as well. i.e. it thinks there is 0.5 sec of backlash plus 1 pixel to move so it moves 0.5 secs at the speed it detected in its callibration plus 1 pixel further. This would be OK if your backlash is constant but this is not always the case.