2015 September 24 Sun - AR12422
本文章最後由 PTS 於 2015-10-20 23:47 編輯As AR12422 moves into the solar disc, more flares and filaments are visible.
Telescope: AP Starfire EDT 155 mm f/9.
stopped to 50 mm for disc images, with 4X telecentric lens (f/36) for closeups
filter: Solar Spectrum SO1.5/0.3A with CERF prefilter
Camera: Imperx 4M15
North is up, and east to the left.
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