2020 October 17 Sun - solar surface in white-light, with AR12775 and AR12776

各類觀測太陽的儀器介紹及太陽攝影 Solarmax
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2020 October 17 Sun - solar surface in white-light, with AR12775 and AR12776

文章 PTS » 週六 17 10月, 2020 13:34

2020 October 17 Sun - solar surface in white-light, with AR12775 and AR12776

AR12775, at (S23W75) is on the SW limb. Faculae are visible, but no sunspot.
AR12776 has been violently active yesterday, and is today located at (S14E39). Bright flares and dark filaments are produced.
A sunspot with penumbra and a tiny sunspot (Class B) are visible.
sunspot count: group=1, sunspot=2, R=12

Telescope: Celestron C5, 127mm f/10 Schmidt-Cassegrain
Camera : ASI1600MM Pro, not cooled.
focal length : 1250 mm f/10
Filters: Baader Solar Film 5.0+ Baader Planetarium G-band continuum.
approximately north is up, east to the left
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wh-disc-104856.jpg
Taken at 02:48:55 UTC
exposure: 1.3 ms
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Taken at 02:53:03 UTC
exposure: 1.15 ms
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Taken at 02:55:27 UTC
exposure: 1.10 ms
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wh-AR12776-110018.png (424.71 KiB) 已瀏覽 19 次

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