Sunspots (Hα-line)
Taken by Masa Nakamura on July 29, 2012 @ Otawara, Tochigi, Japan
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We an differenciate the few hours growth of the sunspot area through Hα-line.
Photo: Coronado Solarmax40 + Meade Electronic eyepiecee+ Sony DCR-TRV50 Video camera
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