Sun in h-alpha/calcium-H/Helium D3 (Spectroheliogram)
Taken by Richard Schrantz on May 2, 2026 @
Nicholasville, Kentucky, USA
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Here is the sun this morning in h-alpha, Calcium-H, and Helium D3. 102mm f/7 spectroheliograph, ASI183mm camera. On the helium image, notice the coronal hole at the 2:00 PM position and compare it to the SDO satellite 211 Angstrom image.
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