March 4, 2019 on 7:08 pm | In Sun | Comments Off

Today’s sun was very interesting.  We have been following the cycle 25 polarized regions on the Sun so far, but this was the first day where we had three cycle 25 polarized areas at the same time.  One in the Northern hemisphere and two in the Southern.  However, none of them did show any sunspots.  Here the composite image of the CaK and HMIB image from SDO.


March 4, 2019 on 5:05 pm | In Sun | Comments Off

The sky cleared up a bit around noon. The Sun is spotless again for spotless day 412 since solar max. and the current spotless streak has now reached 32 spotless days. The two plages visible close to the Eastern limb in the CaK image, and to a lesser extend in Ha,  are polarized as C-25 areas. The close up in Ha is of the small Northern area visible in the CaK image.

2019-03-04-1904_9-TR-540nm.jpg 2019-03-04-1916_9-TR-Ha.jpg 2019-03-04-1912_3-TR-CaK.jpg


February 25, 2019 on 12:57 pm | In Sun | Comments Off

Clear skies again with average seeing.  We again have a spotless Sun today.  The current streak of spotless days since solar max. equals the highest streak so far in the transition from Cycle 24 to Cycle 25. We reached the same number of 25 days more than three months ago back in November, which is a far cry from the highest streak in the transition from Cycle 23 to 24, which was 52 days.  So we’ll keep counting and see what happens in the coming months. Please note that my data is based on the daily reports from NOAA’s SWPC.

2019-02-25-1518_1-TR-540nm.jpg 2019-02-25-1531_0-TR-Ha.jpg 2019-02-25-1525_3-TR-CaK.jpg

February 24, 2019 on 1:52 pm | In Sun | Comments Off

The last two months we have had terrible observing conditions, but today we had a little break. A spotless Sun today which brings us to spotless day 404 since solar max. by using SWPC’s daily reports.  Some faculae are visible at the Western limb in 430nm as well as a plage in Ha and CaK.   Some very faint proms could also be seen at the NW limb.

2019-02-24-1605_1-TR-540nm.jpg 2019-02-24-1623_3-TR-Ha.jpg 2019-02-24-1617_7-TR-CaK.jpg

2019-02-24-1626_1-TR-Ha-WPlage.jpg 2019-02-24-1612_9-TR-540nm.jpg

February 13, 2019 on 8:00 pm | In Sun | Comments Off

Late observing today following an appointment in the early morning.  Clear skies with average seeing.  No sunspots today, but we did notice a small plage developing near the SW limb at 16 degrees South. As it turns out, this is  a reversed polarized (Cycle 25) plage. In addition a small reversed polarized area showed at a much lower latitude near the equator.   This follows the appearance over the last two days of a small reverse polarized area high up in the Northern hemisphere.  Will have to keep an eye on them.

In addition, a large but faint prom showed at the NW limb. Today full disk images as well as close ups of the reverse polarized areas.

2019-02-13-1634_1-TR-540nm.jpg 2019-02-13-1648_3-TR-Ha.jpg 2019-02-13-1643_1-TR-540nm.jpg

2019-02-13-1652_1-TR-Ha-RevPolAR.jpg 2019-02-13-1643_1-TR-540nm-RevPolAR.jpg 2019-02-13-1652_9-TR-Ha-SmllRevPolAR.jpg

February 2, 2019 on 2:22 pm | In Sun | Comments Off

Clouds were coming in and I ran out of time.  I did not have enough good data for an CaK image and the Ha was hurried and the scope was not tuned right.  But better something than nothing.  A new region is visible in the NE quadrant on spotless day 382 since solar maximum. Full disk images and close ups in Ha and WL of the mentioned region.

2019-02-02-1549_5-TR-540nm.jpg 2019-02-02-1606_8-TR-Ha.jpg

2019-02-02-1553_3-TR-540nm-NEFaculae.jpg 2019-02-02-1608_8-TR-Ha.jpg

January 31, 2019 on 2:11 pm | In Sun | Comments Off

Clear skies with average seeing.  AR2733 has turned to the far side.  A few small filaments can be seen in the higher latitudes in both the Northern as well as the Southern hemisphere. A very faint prom was visible in Ha at the SE limb.  Pretty much a featureless Sun today.

2019-01-31-1501_5-TR-540nm.jpg 2019-01-31-1514_2-TR-Ha.jpg 2019-01-31-1510_5-TR-CaK.jpg

January 28, 2019 on 6:27 pm | In Sun | Comments Off

Another clear day with good seeing.  AR2733’s leading spot has developed a nice penumbra.  However, it has almost reached the Western limb and will disappear soon.  AR2733 covers 90 millionths today and contains 12 spots. We still see a small plage in the NW quadrant in CaK, but activity remains Very Low.

2019-01-28-1437_9-TR-AR2733.jpg 2019-01-28-1450_5-TR-Ha-AR2733.jpg 2019-01-28-1445_8-TR-CaK-AR2733.jpg

2019-01-28-1441_1-TR-540nm-AR2733.jpg 2019-01-28-1452_4-TR-Ha-AR2733.jpg 2019-01-28-1445_8-TR-CaK-AR2733Crp.jpg

January 26, 2019 on 1:13 pm | In Sun | Comments Off

Clear skies with average seeing.  AR2733 is growing a little and measures 50 millionths.  The region produced a number of B-class flares in the last two days with the largest one being a B6.9.  Despite this, the Sun’s solar activity remains Very Low. Today full disk images in the three wavelengths as well as close ups of AR2733.

2019-01-26-1546_0-TR-540nm-AR2733.jpg 2019-01-26-1555_8-TR-Ha-AR2733.jpg 2019-01-26-1551_2-TR-CaK-AR2733.jpg

2019-01-26-1548_2-TR-540nm-AR2733.jpg 2019-01-26-1558_9-TR-Ha-AR2733.jpg

January 25, 2019 on 5:10 pm | In Sun | Comments Off

Clear Skies again with the seeing being below average.  AR2733 looks great compared to the image of the pore on January 21st with a size of 30 millionths.  In addition we are seeing another small plage in the NE quadrant in the Ha and CaK filtered images. A small filament and a few prominences fill in the rest of the  observable items.  Solar Activity is Very Low.

2019-01-25-1453_7-TR-540nmAR2733.jpg 2019-01-25-1508_3-TR-Ha-AR2733.jpg 2019-01-25-1504_1-TR-CaK-AR2733.jpg

2019-01-25-1510_7-TR-Ha-AR2733.jpg 2019-01-25-1511_1-TR-Ha-NewAR.jpg

2019-01-25-1456_2-TR-540nm-AR2733-3x.jpg 2019-01-25-1459_1-TR-430nm-AR2733.jpg

« Previous PageNext Page »

Entries and comments feeds. Valid XHTML and CSS. ^Top^ Powered by WordPress with jd-nebula-3c theme design by John Doe.