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Sunday 22nd. 30F. Overnight frost. Bright sunshine with very little cloud. The increasing, easterly wind may be a problem during the morning. I wrapped up well to stay warm.10:25 43/41F, sun centered and focused but waiting for cloud to clear.
Too much cloud! 30% of 1000 frames. 800x600.
As there was so much cloud I dismantled the PAST etalon drive. I didn't like the highly asymmetrical brightness across the frame. Then I reinserted an original O-ring.
By manually rotating the exposed, inner tuning ring I found a position where 1936x1216 was mostly even in brightness. I then reassembled the etalon shell and its rubber band.12.20 The cloud is clearing at last!
There is a small, dark spot well onto the disk.
13.4 After lunch the cloud continued to tease.
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