Quote:
Originally Posted by peter_4059
I'm interested to understand why focus would shift over weeks but not with night/day temperature variation?
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In truth I could leave the focus for months, hence I suspect any variation was
my fixing what wasn't broken in the first place.
Re: Temperature compensating focusers...I tend to think of them in the same way as auto-guiding.
The more stable and accurate the mount is, the less work your guider has to do.