The Sun on February 17, 2013

The sun showed a more active face today, with prominences, spots, filaments, and even flares.  AR 1675 is releasing M-Class flares, and we have been able to monitor the effects on the earth's magnetic field with the magnetometer I described in my post yesterday.  Seeing was a little better today than lately, and was able to get some nice images with the PSTDS. I'll be in San Francisco next week, so this blog might be quiet for a few days--unless SF gets hit by a meteorite!

A lovely, snaking, inverted filament



Another huge filament, with (unfortunately) some imaging artifacts

Filaments and bright spots.  The bright area toward the bottom of the image is (I think) AR1675 
An active sun
An inverted view of an active sun

AR1675(?) looking very bright to the left of center