Sun in h-alpha/calcium-H (spectroheliogram)
Taken by Richard Schrantz on July 1, 2024 @ Nicholasville, KY USA
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Here are a couple spectroheliograms from today (h-alpha and calcium-H). It was pretty windy (gusting to 25 mph), so they are not as good as usual. 102mm SHG, ASI183mm camera.
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