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Post by DaveMitsky on Oct 21, 2014 12:01:47 GMT -6
I did a bit of solar observing not too long ago during a break in the clouds. The large sunspot group (active region) AR(1)2192 was easily visible without magnification using black polymer solar eclipse shades. In other words, it's a naked-eye sunspot.
As seen in the light of H-alpha through my 40mm f/10 Coronado PST were several filaments (one of them quite lengthy), a few small prominences, and AR2192 and some smaller sunspots.