June 17, 2016
ALPOSS – A report on CR2169 thru CR2173
ALPOSS’ Acting Coordinator and Scientific Advisor Richard Hill continues his detailed reports of the Carrington Rotations. This time he covers 5 Carrington Rotations: CR2169 thru CR2173. The reports are based on over 500 submissions of numerous contributors to the Solar Observations Archive. The report was published in the 2016 Summer issue of the JAPLO and can now also be accessed as a stand alone document on ALPOSS’ Solar Observations & Reports page, or downloading by “right”clicking on the picture below.
June 7, 2016
A short Summary of Carrington Rotation 2177
Carrington Rotation 2177 covered the time period from 2016-05-10 – 0053 UT until 2016-06-06 – 0557 UT
Submitted observations can be viewed in ALPO’s Solar Archive for CR2177:
11 Active regions could be observed during the period, which started with four active regions, an active region area total of 210 millionths, as well as 28 sunspots. The largest region was AR2546 which reached its maximum of 540 millionths on May 17th. The shortest lived Active Region was AR2547 with a duration of two days only and did not grow larger than 10 millionths. The active region total for the solar disk maxed out on May 16th at 770 millionths, one day before AR2546 reached its maximum. The highest number of Sunspots (37) could be observed on May 15th.
The last 7 days of the Rotation the Sun did not produce any C-class flares, and the last 5 days even went without any B-Class flares, resulting in an overall Very Low solar activity. To top it off, the Rotation ended with three days of no registered active regions or sunspots, a clear indication that we are on the way to the Solar minimum. At the end of the Rotation, observers had submitted 273 observations to the ALPO Solar archive. Thanks to all who observed the Sun for their dedication. Following are a few observations submitted by Tony Broxton, Avani Soares, and Monty Leventhal, but all submitted observations can be seen by following the link above.
The ALPO Solar Team.
April 6, 2016
Carrington Rotation 2174, a short summary
CR2174 ran from 2016-02-18 04:08 UT till 2016-03-16 11:58 UT. We received 222 images/observations for this rotation. This is the first time again since April 2011 that we were able to archive over 200 submissions for one rotation.
The rotation started with a total Active Region Area size of 300 millionths and a Wolf Number of 60. It ended with a total region size of 180 millionths, and a Wolf Number of 57. During the period, the Sun showed 22 Active Regions (AR2497 plus AR2501 – AR2522). The highest total Active Region Areas size was 300 on the first day of the rotation, which was mostly contributed to the size of 220 of AR2497, which was turning that day to the far side of the Sun. For the rest of the rotation, the total areas size maxed out for on February 26, at 260 millionths. The largest region during the rotation except for AR2497, was AR2505 which measured 180 millionths on February 22nd. The daily Wolf number reached its maximum on March 5th at 95, which was mainly caused by an increase of the number of areas for one day, rather than spots. The observations/images below, were submitted by Gabriel Corban, Dave Tyler and Howard Eskildsen.
Thanks to everyone for their contributions to the archive.
The ALPO team
March 27, 2016
ALPOSS – A report on CR2166 thru CR2168
Do you still remember how active the Sun was in the Summer of last year? ALPOSS Acting Coordinator and Scientific Advisor Richard Hill published his detailed report on Carrington Rotations CR2166 thru CR2168. The report was published in the 2016 Spring version of the JAPLO and can now also be accessed on ALPOSS’ Solar Observations & Reports page, or by clicking on the following picture:
March 3, 2016
Carrington Rotation 2173, a short summary
Carrington Rotation CR2173 ran from 2016/01/21 19:58 UT until 2016-02-18 04:07.
The rotation started with a total Active Region Area size of 180 and a Wolf Number of 59. It ended with a total region size of 260 millionths, and a Wolf Number of 260. During the period, the Sun showed 17 Active Regions (AR2484 – AR2501). There were 5 days where the total Active Region Areas reached, or exceeded 500 millionths. The rotation maxed out for the total region areas on February 9th, when the daily region area jumped from 460 to 650 millionths and the next day back to 350, mainly because of activity in AR2497. However, AR2497 also managed to produce the largest solar flare of the rotation on February 13th, an M1.8.
A smaller peak in total area of 540 millionths was noticed earlier on January 29th, when the largest sunspot of the rotation, AR2489, covered 300 millionths and registered a Dko on the McIntosh scale. The daily Wolf number reached its very pronounced maximum on February 6th at 113, which was the only day in the rotation where the Wolf number was above 100, but the spot area was only 400. The observations/images below, which were made on some of the key dates, were submitted by Monty Leventhal, Mike Borman and Theo Ramakers.
As of this writing, ALPO received 155 observations/images for the rotation, and we like to thank all that took the time to submit their images/observations.
The ALPO Team.
January 2, 2016
The New ALPOSS Online Archive
As some of you may have noticed, the ALPO Solar Section has a new online archive, where submitted solar observations and images are being kept. They can be accessed by anyone who has an interest in reviewing them. This official ALPO Solar Section Online Archive is not to be confused with the “ALPO Archive” which is graciously maintained separately by the Arkansas Sky Observatory, but is instead the official ALPO archive where members are encouraged to post their images and observations. This ALPO Solar Section Online Archive is also different than the online archives of some other organizations, which are accessible by File Transfer Protocol (ftp) and where images need to be downloaded to be reviewed.
At the current time, the ALPO Solar Section Online Archive houses almost 28,000 images and observations that were submitted by observers and kept in an off-line archive. It is our feeling that in today’s world of social media and fast internet access, we needed to adapt to the new technologies. We have done so with the creation of the ALPO Solar Section Online Archive and letting everyone see what many dedicated observers over the entire world have done to document the activity of the Sun since 1979, which is the earliest image we have in our archive. Please take a look at what’s there at:
If you would like your images to be part of the ALPO Solar Section Online Archive and contribute your own observations, please attach your images (which must contain the information requested in the Summary) to an email and send them to email@example.com.
Or if you are a member of ALPO, you can upload your images directly to the ALPO Solar Section Online Archive, but have to register first by sending an email with your name and intentions to upload observations to the above email address. You will be sent a guide and information on how you can upload the images yourself. We hope that you will enjoy this change as much as we do.
Happy New Year and lots of Clear Skies,
Acting Assistant Coordinator, the ALPOSS
September 2, 2015
The Carrington event of September2, 1859!
From Spaceweather- September 2nd, 2015
Today is the anniversary of an historic solar storm, the Carrington Event. On Sept. 2, 1859, a CME struck Earth’s magnetic field with such power that telegraph stations caught fire and people in Cuba read their morning newspapers by the red light of the aurora borealis. If a similar storm struck our planet today, it might cause trillions of dollars of damage to society’s high-tech infrastructure. Could the Carrington Event happen again? It almost did just a few years ago. Extreme solar storms–past, present and future–are highlighted on today’s edition of http://spaceweather.com
October 5, 2011
“The Weekly” Preliminary Report and Forecast
The latest version of “The Weekly” Preliminary Report and Forecast of Solar Geophysical Data is now posted on-line and available at http://www.swpc.noaa.gov/weekly/index.html
October 2, 2011
Solar Region Summary
Product: Solar Region Summary
Issued: 2011 Oct 02 0030 UTC
# Prepared jointly by the U.S. Dept. of Commerce, NOAA,
# Space Weather Prediction Center and the U.S. Air Force.
Joint USAF/NOAA Solar Region Summary
SRS Number 275 Issued at 0030Z on 02 Oct 2011
Report compiled from data received at SWO on 01 Oct
I. Regions with Sunspots. Locations Valid at 01/2400Z
Nmbr Location Lo Area Z LL NN Mag Type
1302 N16W41 277 0700 Fkc 16 16 Beta-Gamma-Delta
1305 N12W12 248 0170 Dso 06 14 Beta-Gamma
1306 N14E07 229 0020 Hsx 01 01 Alpha
1307 N14E37 199 0030 Dro 10 04 Beta
1308 S25E55 181 0030 Hsx 01 01 Alpha
IA. H-alpha Plages without Spots. Locations Valid at 01/2400Z Oct
Nmbr Location Lo
1301 N16W90 327
1304 N13W72 309
II. Regions Due to Return 02 Oct to 04 Oct
Nmbr Lat Lo
1289 N23 143
August 6, 2011
Images from the Jim Loudon Observatory
New images from the Jim Loudon Observatory by Rik Hill
Image of the Sun August 2, 2011- CR2113
This month is the first time I’ve used the Questar for solar imaging and
I’m not at all disappointed!