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Old 10-07-2020, 02:59 PM
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The_bluester (Paul)
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The_bluester is offline
 
Join Date: Feb 2011
Location: Kilmore, Australia
Posts: 3,342
I am leery of temperature compensation. I ran it for a little while early on but found that firstly, you need a really good focuser if you are going to allow it to move mid sub, and second, it was hard to get the response of the system to match the response of the telescope. By that I mean, if 2 degrees temperature change means 100 steps of focus change, you can't just decide that the temp has changed by 2 degrees over a sub (Early in the night in the summer for instance) and allow temp compensation to move the focuser by 100 steps between subs in response as it might take another two subs for the telescope to catch up to the focuser as it stabilises.

I use temperature delta to trigger an auto focus run. I am just working to set up Voyager on a friends gear and hopefully once that is up and running I can see how it handles focusing though NB filters, it handles focus very reliably with my OSC setup.
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