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It seems really jumpy to me, back and forth a lot above and below the line.
Am I right in saying your exposures were 2 seconds? Have you tried longer? It could be you're just chasing the seeing.
Remember this......people who don't guide but have a good polar alignment can run 45 second exposures without star trailing. Do you really need to take an exposure/adjust your tracking every 2 seconds?
If I was you I'd be pushing my exposures out to 4 seconds and see what happens. A few nights ago I tested this theory....I normally do 4 second exposures but pushed it out to 8 seconds and the guiding figures improved. When I pulled it down to 2 seconds my figures were significantly worse.
Regardless, 1.31 isn't hell on earth!
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