The Dutch Observatory

June 28, 2015 on 2:23 pm | In Sun | Comments Off

A beautiful day with the best transparency and seeing in a long time. 8-9/10   Because of the good seeing, Active Region 2371 is still visible a little at the Western limb. However it still shows a good spot size of 430 millionths with 15 spots. As it turns to the far side of the Sun, a new unnamed Region (2372 ?)with two spots shows up on the East side, so it does not look like we will have a spotless day. Today, a full disk image of the Sun as well a close up of a hedgerow and a anvil shaped prom at the Eastern limb in H-a. Both mentioned active regions are also shown in white light/Continuum and show the Wilson effect very nicely.