May 18, 2020 on 5:12 pm | In Papers, Sun | Comments Off

An Analysis of the Transition From Solar Cycle 24 to Solar Cycle 25

I wrote a paper about the current Solar low.  More specifically how the current transition stacks up against transitions between other Solar Cycles.  This paper was published in the 2020 Winter issue of the Strolling Astronomer, ALPO-Astronomy’s quarterly paper.  I am posting it here for those who follow me, and have not had a chance to read this, so they can get a better idea what the current Solar minimum indicates. Follow the link here to read the paper as a pdf document.

May 17, 2020 on 12:47 pm | In Sun | Comments Off

Clear skies during my observing session with average seeing.  Another spotless day for the Sun.  The two proms at the Eastern limb are still there and one can see a plage associated with each of them near the rim.  Both of them seem to have Cycle 25 polarization.  Its worth to keep an eye on these two.  Full disk images as well as close ups in Ha of the two proms/plages.

2020-05-17-1424_0-TR-540nm.jpg 2020-05-17-1427_4-TR-Ha.jpg 2020-05-17-1429_7-TR-CaK.jpg

2020-05-17-1436_8-TR-Ha.jpg 2020-05-17-1437_6-TR-Ha-SEProm.jpg

May 16, 2020 on 10:55 am | In Sun | Comments Off

Clear skies, with variable seeing.  Another spotless Sun today but with a few proms at the Eastern limb.  I made a close up of the SE prom which was skinny and high, but the second one in the NE was low and wide.  Almost always something to see.

2020-05-16-1429_5-TR-540nm.jpg 2020-05-16-1435_1-TR-Ha.jpg 2020-05-16-1441_8-TR-CaK.jpg


May 12, 2020 on 12:28 pm | In Sun | Comments Off

Clear skies with good seeing conditions.  Today is a special day since it is the 750th spotless day on the Sun since solar max as reported by SWPC.  In fact, the sun is real quiet today.  The only item I could make out was this very small prom at the SW limb visible in the full disk Ha image.  For the rest it was a blank disk, even in CaK.

2020-05-12-1524_0-TR-540nm.jpg 2020-05-12-1528_3-TR-Ha.jpg 2020-05-12-1531_4-TR-CaK.jpg

May 11, 2020 on 10:40 am | In Sun | Comments Off

Clear skies with good seeing.  Another spotless day on the Sun.  This time we did not see any prominences and only a filament in the Southern hemisphere in Ha.  So the Sun is really quiet today.  Today only full disk images.

2020-05-11-1447_5-TR-540nm.jpg 2020-05-11-1449_9-TR-Ha.jpg 2020-05-11-1452_8-TR-CaK.jpg

May 10, 2020 on 11:18 am | In Sun | Comments Off

Clear skies with average seeing today.  The Sun remains spotless.  However the prom in the NE now shows as a detached prom in the full sized Ha image.  Noticed it too late to make close up, so today only full disk images.

2020-05-10-1441_8-TR-540nm.jpg 2020-05-10-1447_3-TR-Ha-HighNEProm.jpg 2020-05-10-1450_8-TR-CaK.jpg

May 9, 2020 on 10:38 am | In Sun | Comments Off

Today we have clear skies with very good seeing, but the Sun decided to remain spotless. We still see some proms around the Sun but for most they are pretty faint.  In addition, two filaments are visible in Ha in the Southern hemisphere.

2020-05-09-1419_3-TR-540nm.jpg 2020-05-09-1425_2-TR-Ha.jpg 2020-05-09-1428_5-TR-CaK.jpg

May 4, 2020 on 10:29 pm | In Carrington Rotation Review | Comments Off

A Short Summary of CR2229

Carrington Rotation CR2229 covered the time period from 2020-03-28 0857 UT – 2020-04-24 1529 UT.
The observations can be viewed in my Solar Archive for CR2229 which can be accessed at:
The rotation brought us 22 spotless days with a streak of 19 days. We had one Active Region, AR2759, which emerged on 3/31/2020 and lasted for 5 days. The region’s maximum coverage was 30 millionths on April 3 and 4, when it supported 2 and respectively 3 spots. Overall Solar Activity remained Very Low and the rotation increased the spotless days count since solar maximum to 738 spotless days. Finally, during the period SWPC reported three A-class, seven B class and no C-class flares.
At this time I would like to feature some combination images showing AR2759 in three different wavelenghts on three different days.

2020-04-02-1438_4-TR-540nm-AR2759 45Combo.jpg 2020-04-03-1433_7-TR-Ha-AR2759-Combo.jpg 2020-04-04-2138_6-TR-Ha-AR2759-Combo.jpg

Clear Skies,
Theo Ramakers

May 4, 2020 on 9:53 am | In Sun | Comments Off

Another day with clear skies and good seeing.  But the Sun remains spotless.  A plage is noted in the SE quadrant in CaK and we have two nice prominences. The one in the SE and another one at the opposite side at the NW limb.

2020-05-04-1259_9-TR-540nm.jpg 2020-05-04-1308_3-TR-Ha.jpg 2020-05-04-1321_5-TR-CaK.jpg

2020-05-04-1315_6-TR-Ha-SEProm-Film.jpg 2020-05-04-1317_0-TR-Ha-NWProm.jpg

May 3, 2020 on 10:08 am | In Sun | Comments Off

Clear skies again with good seeing.  The Sun remains spotless.  The old AR2760 is getting ready to turn to the far side of the Sun and a new plage can be seen in the SE quadrant.  Also the filament from yesterday is still visible, although less distinct. So today I made a close up of it.  Full disk images today and close ups of the old AR2760 and the Filaprom.

2020-05-03-1255_1-TR-540nm.jpg 2020-05-03-1302_2-TR-Ha-2.jpg 2020-05-03-1312_4-TR-CaK.jpg

2020-05-03-1307_0-TR-Ha-SEFilaprom.jpg 2020-05-03-1308_0-TR-Ha-oldAR2760.jpg

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