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.
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