2018 April 19 Sun - prominences on NWW limb
Prominences show up on the NWW, W, SWW and SSW limb.
These images are very faint prominence on the NWW 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 April 19 Sun - prominences on NWW limb
2018 April 19 Sun - prominences on NWW limb
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- prominence-06_22_13Z.jpg (62.93 KiB) 已瀏覽 255 次
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- prom-NWW-06_46_41Z.jpg (159.17 KiB) 已瀏覽 255 次
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- prom-NWW-06_54_47Z.jpg (236.02 KiB) 已瀏覽 255 次
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- prom-NWW-06_59_52Z.jpg (115.94 KiB) 已瀏覽 255 次
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- prom-NWW-07_03_47Z.jpg (92.63 KiB) 已瀏覽 255 次
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- prom-NWW-07_04_18Z.jpg (72.62 KiB) 已瀏覽 255 次
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- prom-NWW-07_12_17Z.jpg (58.62 KiB) 已瀏覽 255 次
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- prom-NWW-07_12_53Z.jpg (91.06 KiB) 已瀏覽 255 次
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- prom-NWW-07_22_57Z.jpg (95.33 KiB) 已瀏覽 255 次
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- prom-NWW-07_35_05Z.jpg (89.09 KiB) 已瀏覽 255 次
Re: 2018 April 19 Sun - prominences on NWW limb
more images
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- prom-NWW-07_35_27Z.jpg (87.4 KiB) 已瀏覽 254 次
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- prom-NWW-07_40_48Z.jpg (79.13 KiB) 已瀏覽 254 次
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