Solar Section        


This area is setup for members who have submitted their observations from Carrington Rotations for viewing.

Sunspot Summary Carrington Rotation 2106
Observations in Ca-K
Start date: 2011/01/20, 09:10 UT, End date: 2011/02/16, 17:22 UT, per

Two spots persisted from the prior rotation; AR 1147 was large, while AR 1148 was barely visible by the SW limb. AR 1147
persisted and was joined by AR 1149 just to the north and the pair crossed the solar disk. AR 1150 appeared just as they rotated
from view. Several small spots with little activity appeared over the next two weeks, and then AR 1158 burst onto the scene and
enlarged until visible to the unaided eye. It produced the first X-class flare of cycle 24, the first in four years. It persisted through
the end of the rotation and was joined by another large spot, AR1161 before the end of the cycle.

Dates expressed as yymmdd (Universal Date)
Sunspot Location Date Date
Number First Seen Appeared Last seen Comments
1147 NE Limb ***** 110127 Present before the start of the rotation, large, some complexity, but it was quiescent. Remained large as it rotated from view.

1148 SW Quad ***** 110121 Tiny remnant of a small spot during prior CR, fading as it rotated from
1149 N Hemisphere 110121 110127 Appeared abruptly just north of AR 1147and developed rapidly. Persisted until carried out from view by solar rotation. Minor flaring.

Pore NW Quad 110121 110122 Tiny pore in new plage.

1150 SE Limb 110127 110204 Rotated into view. Gradually enlarged, then slowly faded from view.

1151 NW Quad 110128 110129 Small, plage visible two days before spot appeared near NW limb.

1152 S Hemiphere 110204 110206 Per; I was not able to image the day first appeared. Faded from view.

1153 NW Quad 110206 110209 Small spot near NW limb. Rotated from view.
1154 NW Quad 110208 110208 Short-lived. I was not able to image.
1155 NE Quad 110208 110208 Another one-day-wonder that I was not able to image.
1156 SE Quad 110208 110213 Small, gradually faded from view.
1157 NE Quad 110208 110216 Persisted until carried from view by solar rotation.
1158 SE Quad 110211 ***** Dramatically enlarged, visible through filter without telescope,
produced first X-class flare in 4 years, the first of cycle 24.
1159 NE Quad 110211 110215 Small, gradually faded from view.
1160 NE Quad 110213 110214 Small, in the returning remnants of faculae of AR1147/1149 complex
1161 NE Quad 110213 ***** Small in size when first visible on the eastern limb, but grew rapidly
through the end of the rotation.

Images taken by Howard Eskildsen for CR2093


Historic CR 2093 completed its cycle with spots present every day of the rotation.  I started writing my CR reports with CR 2060 in August, 2007, and this is the first report I have done that did not have a spot-free day.  Cycle 24 has arrived, yet strangely, there was a solitary Cycle 23 spot during this rotation.
Carrington Rotation 2093:  Start date: 2010/01/30, 19:56 UT, End date:  2010/02/27, 04:04 UT, per  Photo Data: North up, East left, Date: yymmdd, hh:mm universal time>

Notes:  This rotation is the first in a long time to have no days without spots.  I started writing Carrington Rotation reports in August 2007 with CR 2060 (34 rotations ago) and this is my first report without a spot-free day.    AR 1043 appeared during the last day of the prior rotation and enlarged for a time, then faded while others took its place.  On 100204 faculae from the remnants of AR 1040 were fully visible by the NE limb.  Since AR 1040 was the reappearance of AR 1035, this marks the third time that this magnetic field has appeared on the solar disk.  Further spots summarized below appeared and produced C-class and M-flares and spectacular prominences.  Old Sol has awakened from its long, long sleep!


Sunspot Location Date Date
Number First Seen Appeared Last seen Comments
1043 NE xxxxx 100207 First appeared during CR 2092.  It developed and crossed the disk, then faded as it rotated from view. 

1044 NW 100205 100205 Tiny spot (per NOAA) that lasted less than one day

1045 NE 100206 100213 Burst onto scene and enlarged rapidly and produced
C and M class flares. It had started to decay by the
time it rotated from view.

1046 NE 100206 100216 Rotated into view by NE limb, enlarged for a time and
then faded before facular remnants rotated from view. 

1047 SE Limb 100208 100209 Diminutive Cycle 23 spot rotated into view, then faded
the next day. Faculae persisted, but slowly fated, until
rotating from view.

1048 NE 100214 100216 Faculae  were visible the day before on the solar limb. 
Prominences appeared on the nearby limb on 100214 
and were bright enough to be seen without increasing
the exposure time that is usually needed to see
prominences in Ca-K. 

1049 Southern 100217 100223 Its compact faculae rotated into view 5 days before the
spot appeared.  It remained distinct and complex until
it rotated out of view. 

Pore SE Limb 100218 100218 Tiny spot rotated into view in large, tenuous facular area,
probably old decaying active region.  

1050 SE Quadrant 100223 xxxxx New spot in compact facular area, adjacent to unrelated
senile facular group.  A huge filament extended from it to
the SE limb, over 1 million km in length.  It persisted
through the end of the rotation. 

   Powered by WordPress     Personalized by: Larry Owens     Contact the Webmaster