Sun in h-alpha
Taken by Richard Schrantz on April 18, 2024 @ Nicholasville, KY USA
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Here is active sunspot group 3637/3638/3643/3645 in h-alpha. Imaged reduced to 70%. 127mm f/9.4 refractor, Quark-C/Lunt 40mm double-stack filter, ASI174mm camera.
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