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Spectrohéliography
10/25/24
H-alpha, Home-made SHG, 2400l/mm, Aug 2024
H-beta, Home-made SHG, 2400l/mm, Aug 2024
Helium Line, Home-made SHG, 2400l/mm, Aug 2024
H-beta, Home-made SHG, 3600/mm, Aug 2024. Spectral resolution is here larger than 50k!
H alpha [Etalon]
