2017 October 20 Sun - filament near south limb
The prominence that showed up on the SSE limb now appears as a dark filament.
Telescope: AP Starfire EDT 155 mm f/9.
stopped to 50 mm (f/28) for disc images, with 4X telecentric lens (f/36) for closeups
filter: Solar Spectrum SO1.5/0.3A with CERF prefilter
Camera: Imperx 4M15
2017 October 20 Sun - filament near south limb
2017 October 20 Sun - filament near south limb
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- 20171020134515866.jpg (214.91 KiB) 已瀏覽 206 次
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誰在線上
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