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2016 July 31 Sun

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發表於 2016-7-31 23:07:50 | 顯示全部樓層 |閱讀模式
The long filaments in the northern hemisphere are near the western limb.The large patch of plages is now just south of the solar-disc centre, and crossing the meridian.
AR12570 is moving towards the centre of the solar surface.

Many prominences show up on the limb, The one on the SE limb and the one on the NWW limb show rapid motions even during today's relatively short observation..

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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