Sun in h-alpha (Spectroheliogram)
Taken by Richard Schrantz on January 17, 2025 @
Nicholasville, Kentucky, USA
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Here is an h-alpha spectroheliogram from this morning. Lots of activity on the sun after a brief lull. Sunny, calm winter days are few and far between for SHG imaging! 102mm f/7 homemade SHG, ASI183mm camera.
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