2021 August 19 Sun - prominences on the SEE solar limb
Sunspot count: group=3, sunspot=12, R=42
For H-alpha images:
Telescope: Lunt LS50T with B1200 blocking filter + 2X barlow
Camera : ASI174MM
exposure: 25.0 ms
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: 8.0 ms
approximately north is up, east to the left
2021 August 19 Sun - prominences on the SEE solar limb
2021 August 19 Sun - prominences on the SEE solar limb
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- cak-prom-092516.png (59.41 KiB) 已瀏覽 236 次
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