Image of sunspot in white light obtained with a Celestron C14HD + Astrosolar 3.8 + Ir Pass 807 nm
Alessandro Bianconi | |
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Image of sunspot in white light obtained with a Celestron C14HD + Astrosolar 3.8 + Ir Pass 807 nm
Alessandro Bianconi | |
not Specified | |
not Specified | |
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