2021 December 09 Sun - solar surface in white-light, with AR12901, AR12903 and AR12904.

各類觀測太陽的儀器介紹及太陽攝影 Solarmax
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2021 December 09 Sun - solar surface in white-light, with AR12901, AR12903 and AR12904.

文章 PTS » 週四 09 12月, 2021 13:00

2021 December 09 Sun - solar surface in white-light, with AR12901, AR12903 and AR12904.

First day with no sunspot.
AR12901 is located at (N21W75). No sunspot is visible, leaving patches of faculae.
AR12903 is located at (S18W66). No sunspot is visible, leaving patches of faculae.
AR12904 is located at (S26E03). No sunspot is visible.

Sunspot count: group=0, sunspot=0, R=0

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
approximately north is up, east to the left.
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