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

Sun in h-alpha/calcium-K (Spectroheliogram)
Taken by Richard Schrantz on September 29, 2025 @ Nicholasville, Kentucky, USA

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Sun from this morning in calcium-K and h-alpha using 102mm f/7 spectroheliograph. Stopped to 72mm for calcium. ASI183mm camera.

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