The Sun on 4-15-2015
The sun is putting on quite a show at the moment. The image below shows prominences, sunspots/active areas, and filaments. The complex active areas, ARs 2321, 2324, and 2325 stand out clearly on the upper right. to the lower left, ARs 2320 and 2323 are visible on the limb.
The next pic shows the upper right quadrant processed to enhance contrast. It can be a useful technique if the image is hazy or low contrast. Today, conditions were very good, as these images show.