2021 December 18 Sun - solar surface in white-light, with AR12904, AR12905, AR12906, AR12907, AR12908, AR12909, AR12910

[PTS]

2021 December 18 Sun - solar surface in white-light, with AR12905, AR12906, AR12907, AR12908, AR12909, AR12910 and AR12911
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AR12905 is located at (S11E26). No sunspots is visible.
AR12906, is located at (N29W18), 4 sunspots are visible.
AR12907 is located at (S20E12), and at least 20 sunspots are visible, both leading and following sunspots have split umbrae.
AR12908 is located at (S20E29). At least 12 sunspots are visible. Both leading and following sunspots have mature penumbrae
AR12909 is located at (S21E44). At least 7 sunspots are visible. The leading sunspot come with split umbra and mature penumbrae.
AR12910 is located at (N14W31). At least 5 sunspots are visible.
AR12911 is located at (N19E51). 4 sunspots are visible, embedded in bright faculae.

Sunspot count: group=6, sunspot=52, R=112

Camera: Sony RX10iv
Lens : Vario Sonnar 600 mm (35-mm equivalent), f/4
Filter : baader Planetarium Solar Film 5.0