Sun In H-alpha/calcium-K (Spectroheliogram)

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Sun in h-alpha/calcium-K (Spectroheliogram)
Taken by Richard Schrantz on July 17, 2026 @ Nicholasville, Kentucky, USA

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Here is the sun from this morning in h-alpha and calcium-K recorded with a 102mm f/7 spectroheliograph. Calcium stopped to 72mm. ASI183mm camera. Good seeing.

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