Wow! There’s a very large sunspot cluster visible to the naked eye right now. Using a safe solar viewing apparatus, you can see it without magnification. I’ve only seen these a handful of of times in my life.
A closeup of #sunspot AR
2192 on Oct. 19 http://t.co/PAjhdBBVAn #sun #belgium pic.twitter.com/4saJ8S8Y4B
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Observing Space (@ObservingSpace) October
20, 2014Image credit: Taken by Jimmy Eubanks on October 19, 2014 @ Boiling Springs, SC, USA and uploaded to spaceweathergallery.com. The image is in the light of the deep violet Calcium K line at 3933.7 Angstroms.