Solar Section        

 
 

July 20, 2018

A Short Summary of Carrington Rotation 2205

Carrington Rotation 2205 covered the time period from 2018-06-12 1554 UT – 2018-07-09 2038 UT.
229 Images/Observations were submitted at the time of this writing. The submissions can be viewed in ALPO’s Solar Archive for CR2205:

http://alpo-astronomy.org/gallery3/index.php/Solar-Observations-Archive/SolarImages2018/CR2205

Although CR2005 showed us active regions for the same number of days as CR2204 (12), the Total Active Region Area for the Rotation (sum of all daily active region areas) went up approx. 1.5x from 770 millionths to 1180 millionths. This increased activity was mainly caused by AR2715. During the rotation, the Sun’s flare activity however reduced compared to the previous rotation and accounted for a total of 2 C-class flares as well as 34 B-class flares, leaving the overall Solar Activity Very Low. We were able to observe three Active Regions, AR2713, AR2714 and AR2715. AR2714 was a short lived regions of 4 days, but AR2715 with 8 days lasted a little longer, but accumulated a Total Region Area of 690 millionths. The maximum sunspot count was 24 on June 21nd, for a Wolf Number of 54. The rotation ended with Spotless Day 239.

This time we would like to feature some drawings submitted by three of our observers, Tony Broxton, Monty Leventhal, and Tom Mangelsdorf. Thanks to them, as well as all other contributors for another great rotation. Please take a look at all the drawings/images by clicking on the link above which links to our archive for CR2205.
Clear Skies,
Theo Ramakers
Assistant Coordinator, the ALPOSS

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