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Tuesday 8th 44F, heavy overcast, wet and windy.
If/when the rain clears I want to work on the lower, shutter bogies. The triangular doorway fillers will need trimming to match the presence of the arched, steel tube. I cannot close off the dome unless the shutters are moving freely. Presently, they want to be pulled and pushed near the top. I haven't had a chance to see how adjusting the channel top braces affected the shutters.
Eye-bolts on the zenith board will still be needed to allow ropes to
pull on the shutters. For when the tops are completely out of reach from
the observatory floor. I know from long experience with the plywood
dome. That it is all but impossible to push them open or closed with a
long batten. There is still the matter of the triangles draining onto
the base ring. The triangles ought to be overlapping the ring. As does
the rest of the dome skirt.
The sun came out at lunch time. Is it worth setting up for imaging?
Recent results have been very poor. Probably due to the low solar
altitude spoiling the seeing conditions. Thin, high cloud has being
causing a white glare around the sun too. Well that settles it. A bank
of cloud has appeared and covered the sun.
15.26 46F sun clear again. AR2939
Removed the camera protective filters and the 1.25x GPC from behind the etalon. A very odd image but at least it has some detail. PST etalon sweet spot/ring issues.
15.36 AR2940. 2.6x GPC
15.43 AR2941 2.6x GPC
14.07 AR2940 1.6x GPC and heavily cropped.
16.14 Sun gone behind the trees. Suddenly getting colder!
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