2018 April 10 Sun - prominences on NWW limb
AR12703 is on the W limb, but there is no sunspot today. I am not sure if the prominences on the W limb is associated with this AR or not.
It is the first time in 50 years that I have not slow motion for my observation, not even a slow-motion knob. All I can do is to 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 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 April 10 Sun - prominences on NWW limb
2018 April 10 Sun - prominences on NWW limb
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- prominence-02_27_41Z.jpg (110.61 KiB) 已瀏覽 215 次
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- prominence-02_31_34Z.jpg (97.84 KiB) 已瀏覽 215 次
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- prom-NWW-03_05_14Z.jpg (82.3 KiB) 已瀏覽 215 次
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Re: 2018 April 10 Sun - prominences on NWW limb
more images
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- prom-NWW-03_16_05Z.jpg (77.59 KiB) 已瀏覽 214 次
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- prom-NWW-03_20_57Z.jpg (78.26 KiB) 已瀏覽 214 次
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- prom-NWW-03_21_25Z.jpg (89.92 KiB) 已瀏覽 214 次
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- prom-NWW-03_21_45Z.jpg (79.22 KiB) 已瀏覽 214 次
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- prom-NWW-03_27_06Z.jpg (87.92 KiB) 已瀏覽 214 次
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- prom-NWW-03_27_15Z.jpg (65.65 KiB) 已瀏覽 214 次
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