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Was a lovely night in the end. The seeing stayed reasonably good (above average at least) with a few moments of really good seeing.
I was able to bring my mirror down to ambient (around 7deg) before starting imaging thanks to my active cooler.
The temperatures stayed stable around 7.2deg until about 12:15am when the temperatures dropped rapidly to about 5deg. It was noticeable in the image on the screen as the mirror was warmer now, and the image was much less stable.
I would've had to turn the cooler back on to bring the mirror temperature down, but I only had another 30 minutes or so before Jupiter was going to go behind the trees so I called it a night. I needed sleep anyway.
Had a couple of eyepiece views while doing the meridian flip and re-collimating. Man it looked beautiful. Unfortunately the GRS wasn't facing us, it transited a few hours earlier.
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