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Old 23-11-2014, 12:20 PM
HenryNZ
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HenryNZ is offline
 
Join Date: Nov 2014
Location: Auckland, New Zealand
Posts: 57
Thanks. It's good to know people use polar scope for imaging. I typically only have 3-4 hours max for imaging as I need to work early mornings and cannot always stay up till late. A 45 min alignment time is too long. I don't do super long focal length so it's encouraging that good results can be obtained with polar scope alone in a few minutes. I also think that polar scope if calibrated properly may mitigate problem with cone error (I suspect drift alignment is never perfect despite my efforts because my scope axis is not perfectly aligned or orthogonal to the polar axis. So what might be good alignment in one position is not good for another direction).

I have been hesitating to spend money on a polar scope but I think I may give it a try now that I hear what you have to say.

Do you have a figure of your alignment error with polar scope as reported by PHD or PHD Lab?
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