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Matt, the seeing was excellent around 3am - there was no star twinkle where I was, but my cooling system on the scope means I have to wait about half an hour after I turn it off before I can image.
This morning I broke that rule and imaged just after turning it off at 3am, even though the mirror was about 3 degrees below ambient. I was worried about the approaching change, and wanted to make sure I got something while the seeing was good.
I had to make a call yesterday evening as to when I was going to try and image - I could have chosen to be ready at 3am, and so I'd have turned the cooling off at 2.30. But I decided to take a risk and let the cooling run longer, and be ready to image at 4.30am when the seeing could potentially be at its best.
So most of the "poor seeing" in this image was self induced.
Bird
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