Sun Calcium H-Line

Sun Calcium H-Line
Taken by Alessandro Bianconi on March 16, 2021 @ Dolianova - Italy

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2021.Sep.12 Solar Refractor 228 F8 in action Ioptron Cem120 CaH: #Daystar Quark Calcium H-line + ASI290MM (FL=4.800mm) Aperture 150mm

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