Sun in 3 wavelengths (spectroheliograms)
Taken by Richard Schrantz on April 13, 2024 @
Nicholasville, KY USA
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Details:
The sky was really transparent this morning, so I recorded 3 images at different solar wavelengths (h-alpha, h-beta, and calcium-H) just by rotating the diffraction grating and refocusing using my 102mm-based spectroheliograph. ASI183mm camera, 2400 groove/mm grating, 150mm f/4 camera lenses for both collimating and camera.
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