Sun in h-alpha (spectroheliogram)
Taken by Richard Schrantz on March 27, 2024 @
Nicholasville, KY USA
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Details:
The sun looked pretty nice today with large sunspot group 3615 getting close to the limb. I imaged with a homemade spectroheliograph based on a 102mm f/7 refractor, 150mm Pentax Takumar collimating and camera lenses, a 2400 groove/mm diffraction grating, and an ASI183mm camera.
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