Sun in h-alpha/calcium-H (spectroheliogram)
Taken by Richard Schrantz on April 15, 2024 @
Nicholasville, KY USA
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Details:
Here are a couple sun images from today taken on my spectroheliograph based on a 102mm f/7 refractor. Pentax Takumar 150mm f/4 collimating and camera lenses, 2400 groove/mm diffraction grating, ASI183mm camera. The images are h-alpha and calcium-H.
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