September 21, 2019 on 9:28 am | In Sun | Comments Off

Clear skies again with good seeing.  Another spotless day.  Some nice proms are visible around the solar disk.  Today’s images include proms in the SE and NW.  The reverse polarized area from yesterday has developed further and is now nicely visible as a plage not only in CaK but also in Ha but not in visible light.  So another close up today of this area near the meridian.

2019-09-21-1258_1-TR-540nm.jpg 2019-09-21-1306_6-TR-Ha.jpg 2019-09-21-1301_6-TR-CaK.jpg

2019-09-21-1310_1-TR-Ha-NWProms.jpg 2019-09-21-1309_1-TR-Ha.jpg 2019-09-21-1310_9-TR-Ha.jpg

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