PTS 發表於 2015-10-1 21:32:13

2015 Sept. 30 Sun -13th day of a huge prominence

Today, the huge filament is all out of the solar disc and gives us a magnificently hig-rise prominence.
As observation in the morning was interrupted by clouds, observation resumed after clouds clear away in the afternoon.
AR12423 is now on the backside but AR12428 is right edge-on.

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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