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10.29 First image shows the PST etalon "sweet spot" ring. A darker, on-band ring of greater detail. The SE and NW corners of the frame are lighter and relatively featureless.
To be partially rid of it requires constant fiddling with the etalon tuning in rotation and tilt. The blocking filter has to be clocked [rotated} to match the etalon. I align the BF with the focuser drive shaft.
Improvements demand some sunshine to be able to even out the detail and brightness to the best of my ability. It has now clouded over completely!
Back to the dome and marking the joints on the next layer of the base ring. See the previous [Older] post. Second layer marked and cut. I skewed the joints the opposite way to the 1st layer. As one arc is shorter I shall have to be careful about staggering the joints. A 1/3 rotation until the next short arc, on the next layer, will help.
16.05 A clearing of the heavy overcast.
17.03. The trees are about to eclipse the sun.
Pushed this one a bit harder in the processing.
It looks busy but not quite as much, fine detail as the earlier capture. [Above]
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