2018 May 22 Sun - very faint filamentary prominence on W limb
There are 2 major prominences : a loop-like prominence on the NWW limb, and a faint filamentary prominence on the W limb.
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 22 Sun - very faint filamentary prominence on W limb
2018 May 22 Sun - very faint filamentary prominence on W limb
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- prominence-01_38_39Z.jpg (60.71 KiB) 已瀏覽 413 次
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- prominence-01_45_40Z.jpg (69.18 KiB) 已瀏覽 413 次
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Re: 2018 May 22 Sun - very faint filamentary prominence on W limb
more images
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- prom-W-02_20_12Z_cr.jpg (27.55 KiB) 已瀏覽 412 次
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- prom-W-02_27_16Z_cr.jpg (30.09 KiB) 已瀏覽 412 次
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- prom-W-02_27_49Z_cr.jpg (28.34 KiB) 已瀏覽 412 次
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- prom-W-02_28_12Z_cr.jpg (29.01 KiB) 已瀏覽 412 次
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- prom-W-02_38_18Z_cr.jpg (27.53 KiB) 已瀏覽 412 次
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- prom-W-02_38_42Z_cr.jpg (29.77 KiB) 已瀏覽 412 次
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- prom-W-02_38_50Z_cr.jpg (27.8 KiB) 已瀏覽 412 次
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