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2015 September 23 Sun

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發表於 2015-10-4 16:10:13 | 顯示全部樓層 |閱讀模式
Apart from the huge filament, there are several active regions: AR12418, AR12420, AR12421 and AR12422.
These AR's all produce flares throughout their stay on the solar disc.

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.
20150923095128511.jpg
AR12418.gif
AR12420.gif
AR12421.gif
AR12422.gif
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