2018 May 23 Sun - AR12710
AR12710 is a bipolar group, and both the leading (western) and following sunspots have splitted umbrae.
In H-alpha, the flare observed yesterday is still on show. Many filaments comes from the leading sunspot and one of them shoots northward and is reaching far. A stream of eastward material flow seems to have originated from the flare.
As the slow motion is still unavailable, I have to continue with push or pull the telescope to put the image in field. This task becomes very tedious when working on close-up imaging, and I have to use very short exposures (thus high gain) to avoid blur images.
Telescope: AP Starfire EDT 155 mm f/9.
stopped to 80 mm (f/17.5) 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), binned 2
North is up, east is to the left.
2018 May 23 Sun - AR12710
2018 May 23 Sun - AR12710
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Re: 2018 May 23 Sun - AR12710
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- AR12710-02_16_41Z_cr.jpg (60.42 KiB) 已瀏覽 481 次
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- AR12710-02_21_29Z_cr.jpg (59.07 KiB) 已瀏覽 481 次
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Re: 2018 May 23 Sun - AR12710
more images
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- AR12710-02_41_20Z_cr.jpg (57.43 KiB) 已瀏覽 481 次
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- AR12710-02_41_26Z_cr.jpg (64.86 KiB) 已瀏覽 481 次
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- AR12710-03_00_45Z_cr.jpg (72.32 KiB) 已瀏覽 481 次
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- AR12710-03_01_22Z_cr.jpg (66.56 KiB) 已瀏覽 481 次
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- AR12710-03_01_29Z_cr.jpg (58.35 KiB) 已瀏覽 481 次
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