Sun in h-alpha/calcium-K (Spectroheliogram)
Taken by Richard Schrantz on September 26, 2026 @
Nicholasville, Kentucky, USA
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Camera Used: Unavailable Unavailable
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Details:
Here is the sun in h-alpha and calcium-K from this morning recorded with a 102mm f/7 spectroheliograph (calcium stopped down to 72mm). ASI183mm camera. The seeing was good.
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