2018 February 27 Sun - AR12700

各類觀測太陽的儀器介紹及太陽攝影 Solarmax
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PTS
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2018 February 27 Sun - AR12700

文章 PTS » 週二 27 2月, 2018 21:47

2018 February 27 Sun - AR12700

The solar surface has been void of active regions/sunspots since February 18, after AR12699 turned to the backside.
At about 2 UTC on February 26, a small flare appears just to the north of the disc centre. By 6 UTC, this regions has become more active and several tiny pores show up. These pores develop into small sunspots by 12 UTC.
Today, this small active regions shows all features of a full-blown AR, with flares and filaments around.

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: ASI1600MM, 4656X3520 pixels (3.8 micron)
North is up, east is to the left.
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PTS
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文章: 17242
註冊時間: 週日 28 10月, 2007 08:50
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Re: 2018 February 27 Sun - AR12700

文章 PTS » 週二 27 2月, 2018 21:47

more images
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AR12700-07_48_18Z.jpg
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Eddy So
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Re: 2018 February 27 Sun - AR12700

文章 Eddy So » 週三 28 2月, 2018 21:46

[Good Job]

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