January 21, 2020 on 12:58 pm | In Sun | Comments Off

Clear skies!  The plage from yesterday has further decayed and did not develop any spots.  So today we are counting spotless day 659 since solar max.  The plage still can be seen in CaK however it is very hard to see where it was in Ha.  Today full disk images in the three wavelengths and the close ups in CaK and Ha.

2020-01-21-1609_5-TR-540nm.jpg 2020-01-21-1619_6-TR-Ha.jpg 2020-01-21-1612_5-TR-CaK.jpg

2020-01-21-1623_0-TR-Ha-plage.jpg 2020-01-21-1615_3-TR-CaK-plage.jpg

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