AR 2673 and 2674 on the limb – September 10, 2017

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Despite being practically over the limb, AR 2673 is still showing some extreme activity. Today, a giant hot plasma structure evolved in front of my eyes in just minutes.

Equip: 115mm F/7 refractor, Quark H alpha filter, ASI 174MM, seeing 6/10.

12 21 ut color.jpg

12 21 ut.jpg

A giant, very faint prominence:

giant prom 1405.jpg

 

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