December 4, 2019 on 3:59 pm | In Sun | Comments Off

Clear and cold today.  Another spotless Sun.  A small filament was visible in the Southern hemisphere in Ha. For the rest, the Sun was quiet.

2019-12-04-1413_5-TR-540nm.jpg 2019-12-04-1419_0-TR-Ha.jpg 2019-12-04-1415_7-TR-CaK.jpg

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