January 28, 2019 on 6:27 pm | In Sun | Comments Off

Another clear day with good seeing.  AR2733’s leading spot has developed a nice penumbra.  However, it has almost reached the Western limb and will disappear soon.  AR2733 covers 90 millionths today and contains 12 spots. We still see a small plage in the NW quadrant in CaK, but activity remains Very Low.

2019-01-28-1437_9-TR-AR2733.jpg 2019-01-28-1450_5-TR-Ha-AR2733.jpg 2019-01-28-1445_8-TR-CaK-AR2733.jpg

2019-01-28-1441_1-TR-540nm-AR2733.jpg 2019-01-28-1452_4-TR-Ha-AR2733.jpg 2019-01-28-1445_8-TR-CaK-AR2733Crp.jpg

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