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Monday 7th 39F Struggling with the PST sweet spot/ring. Keyboard playing up. Changed the batteries. Still misbehaving.
11.37 [CET] first reasonable image. Very localized detail. Particularly top left. [NE] The seeing conditions are becoming highly mobile. With short periods of being completely out of focus.
I carried on until 13.00 but the seeing became worse. I kept rotating the Lunt BF1200 and re-tuning the PST etalon without obvious improvement.
15.09 Back again with 2x GPC instead of the 2.6x.The wider field of view just exaggerates the PST's sweet spot ring.
15.27 Changed to 16 bit in SharpCap. An improvement considering the poor seeing conditions. Frequent defocusing of the image.
15.40 Still trying to fight the poor seeing conditions.
The delicate light bridge across the largest umbra was completely lost in processing. I was pushing much too hard to drag some detail out of the mush.
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