Sun in h-alpha (spectroheliogram)
Taken by Richard Schrantz on May 16, 2024 @
Nicholasville, KY USA
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Here is the sun in h-alpha recorded by a 102mm refractor-based spectroheliograph today. Lots of activity on the sun today. New sunspot 3684/3685 rotating off the solar limb looked good, as did sunspot 3679. Make sure and view at full resolution. 150mm f/4 Takumar lenses, 50mm diffraction grating (2,400 groove/mm), ASI183mm camera.
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