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2013 September 26-27 Sun - huge filaments near SW limb

[複製連結]
發表於 2013-9-29 12:22:15 | 顯示全部樓層 |閱讀模式
本帖最後由 PTS 於 2013-9-29 12:24 編輯

These quiescent filaments near the SW limb have also undergone changes in the past 2 days.

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

PTS
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