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2015 September 15 Sun - AR12418

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發表於 2015-9-18 11:41:48 | 顯示全部樓層 |閱讀模式
AR12418 is showing as a complex group.  A small transcient surge appears at about 10:43.

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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AR12418-20150915112711743.jpg
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手機版|Archiver|香港天文學會  

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