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2016 October 25 Sun

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發表於 2016-10-25 21:12:47 | 顯示全部樓層 |閱讀模式
While the sky was mostly covered with clouds, the transparency and seeing were very good in the "cracks".The solar surface was domnated by the lone AR12603, but there were many prominences on the limb.

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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filament-SSE-20161025110711344.jpg
filament-W-20161025111358530.jpg
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prom-NW-20161025111715617.jpg
prom-SSE-20161025110653657.jpg
prom-SWW-20161025105001721.jpg
prom-W-20161025111420921.jpg
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