The Sun today - 9 July 2017 - nice spot group

In summary, Dave and others have been discussing sunspot AR2665, the largest spot group visible for some time. Dave has been using his Canon 6D with an 800mm lens to capture images, but has been struggling with manual focus due to his declining eyesight. The spot group is about the size of Jupiter and has even been visible with the naked eye. There have been reports of solar flares and geomagnetic storms associated with this spot group. Some members have shared their own photos and experiences with viewing the spot group. It is currently on the verge of setting and will soon be out of sight.
  • #36
Another (2nd) sun spot group has just rotated into view (right on time for the eclipse), region 2672. So currently there are two groups: 2671, 2672.
SDO_HMIIF_512.jpg


That and more might make the eclipse today more interesting! For more details see e.g.

https://www.physicsforums.com/threads/u-s-solar-eclipse-of-aug-21-2017.866521/page-15#post-5825228

https://www.physicsforums.com/threads/u-s-solar-eclipse-of-aug-21-2017.866521/page-16#post-5825230

Note: further updates of solar activity will continue on a separate thread, coming up.
 
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  • #37
Acquired this image yesterday during equipment check-out for today (Monday). IIRC, 800/8, 1/125s ISO 200, using an ND 6 filter.

aDSC_8659_zpskpxgckov.jpg
 
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