Today’s H-alpha image shows no new active regions, but there is a dramatic loop prominence along the southwestern solar limb as well as some wisps above the western limb.
Today’s annotated sunspot image looks like yesterday’s. The sun rotates once every 27 days; so, yesterday’s active regions have moved slightly westward across the solar disk.
I photographed today’s prominences using a different approach. In the past, I just cropped the H-alpha image to emphasize a particular bit of the sun’s limb (edge) having an interesting prominence. The last couple of days, I have been recording AVI movies of the prominences and then processing them as I would an entire solar image. The advantage of this technique is that I can control the exposure duration in a way that emphasizes the prominence architecture albeit over-exposing the solar disk itself. The second image in the gallery shows this
The gallery below shows the wispy, northwestern limb prominences as well as the southwestern loop prominence. You can see both structures and a few others in the H-alpha solar image at the top of this page.
