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A tremendous image there Peter, I really love these limb activities and your image is superb. Those should be the leftovers of the AR11565.
I am happy to see the fever of solar imaging in high resolution is spreading out quickly.
As for DS etalons, I think they are nice for surface details, where you get much more contrasty images than you would get with a SS configuration. For proms actually SS makes more sense.
Fernando
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