Solar Activity in Calcium-K
Taken by Mike Taormina on July 3, 2017 @ Malta, New York, USA
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Date Taken: 2017:07:03 15:53:13
  
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Details:
You can barely see the flare near the limb in Calcium-K light! compare to my H-alpha image in the previous posting to see where the details line up between the two wavelengths.
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