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Old 20-01-2021, 10:41 AM
Eris (Gerard)
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SUN in Ca K 20012021

I set up this morning under a cloudless sky with intentions to observe in Ca K and Ha with the main feature being AR2797. Within the space of 10 minutes of observing the seeing went from fair to pear shaped. I did manage however to capture something before I was forced to pack it away. Unfortunately no Ha.
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Old 20-01-2021, 11:34 AM
Martin_S
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Good captures in spite of your viewing conditions Gerard, nothing but clouds here in Brisbane. The AR looks interesting.

Martin
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Old 20-01-2021, 12:12 PM
PeterM
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Super images Gerard, got to get em when you can! Here on the Gold Coast has been over a month of mostly cloud. Thanks for posting.
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Old 20-01-2021, 01:02 PM
John W (John Wilkinson)
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Great captures Gerard. Thanks for posting. Cheers John W.
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Old 20-01-2021, 03:40 PM
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Merlin66 (Ken)
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Gerard,
Very impressive results, well done!!
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Old 20-01-2021, 07:04 PM
Eris (Gerard)
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Thanks guys for your kind comments much appreciated. I'm finding AR2797 an intriguing feature. Is it a split cell, or is there an overlying feature that cuts across it? Suggestions?
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Old 20-01-2021, 07:07 PM
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Merlin66 (Ken)
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Gerard,
The light bridge crossing the spot is a magnetic “filament” which usually is seen before the spot(s) break up.

Last edited by Merlin66; 20-01-2021 at 07:23 PM.
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Old 20-01-2021, 07:20 PM
Eris (Gerard)
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Thanks for the explanation of what's going on Ken.
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