Sunspot AR1520: H-alpha - July 12
Taken from Coral Towers Observatory at 1116 local time using a Skynyx 2-0 camera and Astrophysics 130 at F/15 with a Coronado H-alpha Solar Filter. A six frame mosaic.
Image of the sun on this day in white light: www.flickr.com/photos/43846774@N02/7578801316/
Image of sun on this day in H-alpha: www.flickr.com/photos/43846774@N02/7577959784/
Image of the sun on this day in CaK: www.flickr.com/photos/43846774@N02/7578097470/
Info about the sun on this day: spaceweather.com/archive.php?view=1&day=12&month=...