2020 August 07 Sun - prominences on the SE solar limb I am showing the prominences in 2 wavelengths, if possible. In ge

各類觀測太陽的儀器介紹及太陽攝影 Solarmax
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2020 August 07 Sun - prominences on the SE solar limb I am showing the prominences in 2 wavelengths, if possible. In ge

文章 PTS » 週五 07 8月, 2020 22:26

2020 August 07 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=1. sunspots=5, R=15

For H-alpha images:
Telescope: Lunt LS35T with B600 blocking filter
Camera : ASI174MM
exposure: 5.5 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: 4.5 ms

approximately south is up, east to the left
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=1. sunspots=5, R=15

For H-alpha images:
Telescope: Lunt LS35T with B600 blocking filter
Camera : ASI174MM
exposure: 5.5 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: 4.5 ms

approximately south is up, east to the left
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