h-alpha doppler arch prominence on Sun
Taken by Richard Schrantz on April 28, 2025 @
Nicholasville, Kentucky, USA
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Details:
Here is a Doppler rendition of an arch prominence on the Sun 4/28/25. I was mucking around with my spectroheliograph scans that day and noticed it. This is from a single scan with no sharpening. 102mm f/7 spectroheliograph, ASI183mm camera.
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