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2013 April 15 Sun - prominence on SE limb

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發表於 2013-4-18 09:34:34 | 顯示全部樓層 |閱讀模式
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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發表於 2013-5-9 12:56:28 | 顯示全部樓層
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Archiver|手機版|小黑屋|香港天文學會

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