The Dutch Observatory

Clear skies this morning with good seeing.  AR2757 seems to be stable with a size of 60 millionths and 1 spot.  The reverse polarized area in the SE quadrant seems to be stable also.  A few small proms could be seen but not much activity today.

Clear blue skies!!!  AR2757 has increased in size to 100 millionths but the spot count has gone down to 2.  It’s been a while since we had a Cso spot on the Sun.  SWPC reported it at midday as an Hcx!!  .  In addition we have the reverse polarized plage in the SE quadrant, a prom in the NW, and a very tall but faint prom at the NE limb.  An interesting Sun today.  Did take the ASI120MM out for some of the close ups.

Clouds obscuring the session this morning.  Just enough time for one WL image.  AR2757 has developed in a nice area and polarization is consistent with Cycle 24.   However near the SE limb at approx. -30 degrees a faint faculae is visible.  Although not showing spots,  this area seems to have C25 polarization.

Clear skies!  The plage from yesterday has further decayed and did not develop any spots.  So today we are counting spotless day 659 since solar max.  The plage still can be seen in CaK however it is very hard to see where it was in Ha.  Today full disk images in the three wavelengths and the close ups in CaK and Ha.

It has been 8 days since I could observe the Sun.  Today we see that a new plage developed in the NE quadrant which has not shown any pores or spots so far, and I did not notice a faculae in WL, although a B1 flare was noticed near its location yesterday. In addition, a nice stream of plasma is visible between the two poles of the region. So we still have a spotless day, but the area is polarized as a Cycle 25 area.  Today full disk images and a close up of the plage in CaK and Ha.

Following the storms last night, another spotless day on the Sun today. A few filaments and a few plages are visible in Ha in  the SW and center of the solar disk.  The area in the SW was also visible as a faculae in visible light.  The NW limb shows a small prominence.

To show how the morphology of areas on the Sun change, I made this composite of the plage with filaments which was visible over the last four consecutive days in the SW quadrant of the Sun, on its way to the Western limb.  The top image made on January 6th, shows a dense structure containing the plage and well as the filaments.  Over the next three days one sees how the structure decays and falls apart.  Display the image in a seperate window to see the full size.

It was clear when I started, but after the setup the first cirrus clouds and contrails moved through.  The widely variable transparency made it hard to image.  The same plages from yesterday still showed today. Also, the same area in the NW that started to develop two days ago, still shows a few spots or maybe pores? It has not been named yet, and it was hard to see through the cirrus clouds in the WL closeup.  The filaments near the SW plage have decayed a lot.

Clear skies with relative good seeing today.  SWPC did not carry over AR2755.  However, one area I observed yesterday related to reverse polarization, has evolved and today seems to show two tiny spots, visible even in the full disk WL image.  We’ll see if SWPC gets spot reports and names the region maybe even later today.  The remnant of AR2755 still looks great in Ha as well as the new plage that came around the Eastern limb a few days ago.
Today full disk images as well as close ups of all the mentioned areas.

The skies were clearing up during my observing session. SWPC carried AR2755 over into today, however at the time of observing the spot was not visible.  We have a new region coming around the Eastern limb, which might have a pore or small spot. According to my measurements in WinJupos, this area is in the Southern hemisphere and its magnetogram shows an old Cycle 24 polarization. However there is a very small reverse polarized area in the NE quadrant, which is visible also in the CaK image. A faculae is visible in the WL image, and a nice plage in Ha and CaK.  The filaments South of the AR2755 plage show very nice and show some activity.  Compare to yesterday’s images. Yesterday’s Prom in the SW is gone, but we have some small proms in the NE and SE.