Solar Observations for November 2017
I'm Monty Leventhal and every morning, in fine weather, I observe the Sun, our closest star, and record my observations. For the month of November 2017 all Sunspot activity once again on the Sun remained extremely low.
From 1st to 12th November no Sunspots could be seen on the solar disc. It was not until the 14th that I observed a small Cri (6) groups of 2 spots, one with a Penumbra and one without in Active region 12687 (see the diagram below). This group became a Cai (9) group on the 16th with three small spots all within a Penumbra. By the 18th all that could be seen was a single Axx (1) spot. No further observations were made until the 22nd due to cloud cover by which time the solar disc was once again clear of all Sunspots until the 25th when a small Csi (12) group in AR 12689 was seen. By the 27th it had grown to a Cki (39) and by the 30th November it was very close to the NW limb as a single Axx spot.
Prominence activity remained constant, though mostly faint. On the 1st an active Prominence on the NE limb reached an approximate height of 56,000 km. On the 10th a Pyramid type Prominence also reached a height of about 56,000km on the NE limb (as shown in the photograph abpve) and on the 14th a broken type Pyramid Prominence reached a height of about 65,000km.
A large single Arch Prominence was seen on the 23rd on the NE limb reaching a height of about 84,000km.
Prominences were seen on all observing days this month but most were small and faint.
No Flares were seen for the whole month of observations.
A total of 18 Observations were made for the month with the remaining 12 days being cloud covered and/or rain.
A total of only 2 groups were observed. This included 1 group in the north and 1 in the south, comprising of 4 spots in the north and 3 in the south giving a total of 7 Sunspots.
This is now the lowest Sunspot count since 2011.
The average Relevant Sunspot number for the month was 5 and the average CV was 4.9, Q CV 1
Most Prominences observed once again were quiet faint.
No CMEs or Flares were observed.
Monty Leventhal OAM.