August 13, 2019 on 11:11 am | In Sun | Comments Off

Another spotless day with a few small filaments and faint proms in Ha.  A very quiet Sun.

2019-08-13-1411_6-TR-540nm.jpg 2019-08-13-1420_4-TR-Ha.jpg 2019-08-13-1415_2-TR-CaK.jpg

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