2020 July 02 Sun - prominences on the SE solar limb
I am showing the prominences in 2 wavelengths, if possible.
In general, the prominences are much brighter in H-alpha than in Ca-K, despite the much larger aperture (80 mm f/6.25 vs 35 mm f/11.5) used for H-alpha.
Sunspot count: group=0. sunspots=0, R=0
For H-alpha images:
Telescope: Lunt LS35T with B600 blocking filter
Camera : ASI174MM
exposure: 4.0 ms (prominence)
For Ca-K images:
Telescope: Sharpstar AL-80 II, 8 cm f/6.25 APO refractor
Camera : ASI174MM
focal length : 500 mm f/6.25
filter: Lunt Ca-K Module B1200
exposure: 4.0 ms
approximately south is up, east to the left
2020 July 02 Sun - prominences on the SE solar limb
2020 July 02 Sun - prominences on the SE solar limb
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Re: 2020 July 02 Sun - prominences on the SE solar limb
prominences in CaK
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- CaK-prom-NE-114312.jpg (29.46 KiB) 已瀏覽 258 次
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- CaK-prom-NE-115251.jpg (22.84 KiB) 已瀏覽 258 次
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- CaK-prom-NE-115421.jpg (39.83 KiB) 已瀏覽 258 次
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