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Re: Different polar align results
Posted: Mon Jun 25, 2018 8:38 pm
by admin
Yes, I think that the effect of polar alignment error on RA motion is very small - almost all the effect is on DEC. That means that if you are getting RA drift it's most likely due to periodic error.
cheers,
Robin
Re: Different polar align results
Posted: Wed Aug 01, 2018 12:59 pm
by Oshimitsu
Robin,
I just wanted to let you know that my issue was definitely caused by flexture. I secured my usb cables and carefully rotated by ra axis and got it as close to 0 as I could. PHD2 mirrored my PA after a full worm cycle !
Thanks
Re: Different polar align results
Posted: Wed Aug 01, 2018 3:43 pm
by admin
Hi,
thanks for reporting back - I how much movement is caused by a loose USB cable - it's not that it moves the mount or even the guide scope, just that it twists the camera very slightly in the guide scope.
cheers,
Robin