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Old 22-04-2021, 08:25 AM
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Merlin66 (Ken)
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Solar Activity 21 April2021

Some CaK and Ha images from yesterday.
The AR 2815/AR2816/AR2817/AR2818 still showing some detail
The penultimate image is one where flats have been successfully applied during the acquisition using FireCapture. The last image shows a typical flat with the annoying NR
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Old 22-04-2021, 10:19 AM
PeterM
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Well done Ken. That first one is the killer image for me, comes up beautifully on the 27inch monitor. Bravo! Clouded here today so there goes my planned one hour AR animation... next week, looks like there is another AR on the way.

Last edited by PeterM; 22-04-2021 at 10:53 AM.
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Old 22-04-2021, 10:22 AM
John W (John Wilkinson)
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Nice set of images ken, esp. the CaK ones. Regards, John W.
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Old 22-04-2021, 05:27 PM
Eris (Gerard)
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A great set of images Ken. It's good to see that you have been working on an effective strategy for tackling those pesky Newtons Rings. Excellent stuff. Well done.
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Old 22-04-2021, 05:48 PM
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Merlin66 (Ken)
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Gerard,
Thanks.
Iím just putting the final touches to the write-up on the use of full disk flat filters to suppress NR.
I hope others will find it useful.
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