The Dutch Observatory

A very brief opening for some WL observations.  Not even enough time to get the close up of the three active regions aligned correctly.  We’re seeing today 5 Active regions AR2863, 64, 66, 68 and 69, for a total daily active region area of 1000 millionths.  This is the third time since Solar Minimum that we reached the 1000 mark. Only two images today in 540nm, the full disk and a close up of AR2866, 68 and part of 69.

Clear skies for the observing session on 9-4-2021 with great seeing.  I had a visitor this morning and we did observe together. Because of this I am a day late with my submissions.  But, here they are.  The Sun was real busy.  AR2863 in the southern hemisphere increased to a nice 160 millionths. The region in the Northern hemisphere was also named as AR2864 and the spot that emerged not far from it as AR2865.  A new area with a number of spots showed near the SE limb has been named in the meantime as AR2866.  Full disk images today with closeups of AR2863, AR2864 and 65, an AR2866 in the three wavelengths.

Clear skies during the observing session.  Wow, the Sun is really busy today.  AR2863 still shows nicely, although it has decayed a lot to 90 millionths. AR2864 and 2465 show nicely next to each other in the Northern hemisphere, although I could not make out spots in AR2865. AR2866, AR2867, and AR2868 show in the Southern hemisphere.  AR2866 and 68 in the SE quadrant and AR2867 at the limb in the SW quadrant and only was visible in the CaK observation and close up.

Clear skies with good seeing this morning.  AR2860 has turned to the far side of the Sun.  The 540nm and Ha close up show the last areas of the last spots to disappear.  The new area, AR2863, has been active with some low level B-class flares.  The region which I imaged yesterday in the NE quadrant shows a spot this morning but was not named yet at the 1230 UT discussion report of SWPC.  Today full disk images as well as close ups of the mentioned regions.  A nice prom in the NE is also captured in the Ha close up.

No images while the weather persisted during, and following, hurricane IDA.  Active regions AR2861 and AR2862 have both decayed to plages, while AR2862 was only a two day Spot.  AR2860, while it still measures 220 millionth,  is ready to turn to the far side of the Sun. But we do have a new active region in the SE quadrant which was named AR2863 this morning.  In addition, we observe a few nice prominences and filaments, as a well as a well structured region in the NE quadrant, which however does not show any spots.