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2015 September 25 Sun - AR12422

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發表於 2015-10-21 00:03:06 | 顯示全部樓層 |閱讀模式
本文章最後由 PTS 於 2015-10-21 00:04 編輯

AR12422 is now midway between the meridian and the SE limb.
Its full extend is in view and many flares and filaments show up.
At about 10:34 a violent eruption shows up from the following (east) spot and gives a spectacular "spray" like dark filament that lasts until about 11:11.  Another eruption follows, this time from the leading spot and the resulting filament shows until about 11:50.

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.
Sun-20150925100249557.jpg
AR12422-650.gif
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