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A pdf format of the Solar Bulletin is available for printing.
| Paul Mortfield, Editor | Web: www.AAVSO.org |
| c/o AAVSO 25 Birch St. | Email: Paul@IndustrialStars.com |
| Cambridge, MA 02138 | ISSN 0271-8480 |
| Volume 62 Number 10 | October 2006 |
The AAVSO had its annual meeting in October and as part of our solar committee report it was an honor to announce solar observation awards. Please join me in congratulating the following solar observers on their achievements:
Sunspot Observation Awards
Gema Araujo
Javier Ruiz
K. Fujimori
John Kaplan
James & Shirley Knight
Gerd-Lutz Schott
Gerhard Stemmler
H.Takuma
William M. Wilson | |
SID Observation Awards
Paul Campbell
Larissa Observatory
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Pictured above is SID Award recipient Nick Stoikidis, Director of Larissa Observatory in Greece standing beside his 160mm f/15 triple solar telescope. You can find out more about their solar, PEP and education programs at www.larobs.gr.
Sudden Ionospheric Disturbance Report
Michael Hill, SID Analyst
114 Prospect St
Marlborough, MA 01752 USA
noatak@aol.com
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Sudden Ionospheric Disturbances (SID) Recorded During October 2006
(Analysis performed by Michael Hill, SID Analyst)
| Date |
Max |
Imp |
| 061014 |
0216 |
1- |
| 061014 |
0800 |
2 |
| 061022 |
0657 |
1- |
| Importance rating: Duration | -1: <19 | 1: 19-25 | 1+: 26-32 | 2: 33-45 | 2+: 46-85 | 3: 86-125 | 3+: >125 |
| Observer |
Code |
Station(s)
monitored |
| D Toldo |
A52 |
NAA |
| M King |
A99 |
HWU |
| F Steyn |
A102 |
NWC |
| J Godet |
A119 |
GQD |
The events listed above meet at least one of the following criteria
- Event reported by two or more observers within +/- 5 minutes
- Event matched to GOES-8 XRA event to within +/- 15 minutes and event time < 1000 UT
- Reported by observer with a high quality rating > 8 (scale 1-10)
 SID Activity for October was almost non-existent, only a bit higher than the low recorded back in Febraury. We had only 3 correlated SID events this month and all of them were of low importance rating. This corresponds to the the matching low activity level seen by the GOES-12 satellite which recorded only 34 X-Ray flares. All of these in fact were lower B-Class events. The activity that remained high however was yours. Even though the sun is very quiet, a lot of you are still faithfully keeping watch and reporting in. Only those that reported SID events show up in the bulletin above and in the SID Database file on the AAVSO web site but rest assured your reports are recorded in the observer database that I maintain. Thanks, as always, to all of you for your data.
Solar Flare Summary Based on GOES-12 Data
Sunspot Data
American Relative Sunspot Numbers(Ra) for October 2006
[boldface = maximum, minimum]
| Day |
N |
Raw
Mean |
Ra |
| 1 |
28 |
35 |
25 |
| 2 |
27 |
26 |
19 |
| 3 |
30 |
23 |
17 |
| 4 |
29 |
23 |
16 |
| 5 |
28 |
25 |
18 |
| 6 |
30 |
24 |
18 |
| 7 |
33 |
24 |
17 |
| 8 |
34 |
18 |
13 |
| 9 |
32 |
15 |
10 |
| 10 |
28 |
8 |
5 |
| 11 |
22 |
1 |
0 |
| 12 |
28 |
0 |
0 |
| 13 |
28 |
0 |
0 |
| 14 |
28 |
0 |
0 |
| 15 |
30 |
2 |
1 |
| 16 |
30 |
0 |
0 |
| 17 |
26 |
0 |
0 |
| 18 |
27 |
0 |
0 |
| 19 |
28 |
10 |
6 |
| 20 |
29 |
15 |
11 |
| 21 |
30 |
19 |
14 |
| 22 |
28 |
25 |
18 |
| 23 |
27 |
34 |
24 |
| 24 |
29 |
21 |
15 |
| 25 |
27 |
7 |
4 |
| 26 |
25 |
0 |
0 |
| 27 |
33 |
7 |
5 |
| 28 |
29 |
9 |
7 |
| 29 |
29 |
1 |
1 |
| 30 |
29 |
15 |
11 |
| 31 |
28 |
34 |
23 |
Means |
28.7 |
13.6 |
9.6 |
Total No. of Observers: 60
Total No. of Observations: 889
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October 2006 Sunspot Observers
| AAP |
A. Abbott |
2 |
| AJV |
J. Alonso |
10 |
| ANGR |
Raymund Ang |
13 |
| ARAG |
G. Araujo |
28 |
| BARH |
H. Barnes |
6 |
| BATR |
R. Battaiola |
2 |
| BEB |
R. Berg |
23 |
| BERJ |
J. Berdejo |
11 |
| BLAJ |
J. Blackwell |
13 |
| BMF |
M. Boschat |
17 |
| BRAB |
B. Branchett |
30 |
| BRAM |
M. Bradbury |
2 |
| BRAR |
R. Branch |
24 |
| BROB |
R. Brown |
29 |
| BYG |
Y. Brovarets |
33 |
| CHAG |
G. Morales |
26 |
| CKB |
B. Cudnik |
25 |
| CLZ |
L. Corp |
7 |
| COMT |
T. Compton |
8 |
| CVJ |
J. Carvajal |
9 |
| DEJV |
J. van Delft |
14 |
| DGP |
G. Dyck |
14 |
| DUBF |
F. Dubois |
24 |
| FERJ |
J. Fernandez |
17 |
| FLET |
T. Fleming |
24 |
| FUJK |
K. Fujimori |
25 |
| GFT |
F. Gobet |
12 |
| GOEM |
M. Goetz |
1 |
| HALB |
B. Halls |
4 |
| HAYK |
K. Hay |
5 |
| KAPJ |
J. Kaplan |
22 |
| KNJS |
J. & S. Knight |
25 |
| KQR |
R. Kinne |
7 |
| KROL |
L. Krozel |
1 |
| LARJ |
J. Larriba |
6 |
| LERM |
M. Lerman |
4 |
| MARE |
E. Mariani |
8 |
| MARJ |
J. Maranon |
18 |
| MCE |
E. Mochizuki |
22 |
| MCHL |
L. McHenry |
3 |
| MEU |
E. Mason |
10 |
| MMI |
M. Moeller |
24 |
| OATS |
S. Oatney |
17 |
| OBSO |
IPS Observatory |
10 |
| PEKT |
R. Pektas |
18 |
| RICE |
E. C. Richardson |
14 |
| RITA |
A. Ritchie |
23 |
| SCGL |
G. Schott |
19 |
| STEF |
G. Stefanopoulis |
5 |
| STEM |
G. Stemmler |
16 |
| STQ |
N. Stoikidis |
12 |
| SUZM |
M. Suzuki |
25 |
| SZUM |
M. Szulc |
25 |
| TESD |
D. Teske |
26 |
| TJV |
J. Temprano |
6 |
| URBP |
P. Urbanski |
22 |
| VARG |
A. Vargas |
18 |
| WILD |
D. Williams |
1 |
| WILW |
W. Wilson |
21 |
| WRP |
R. Wheeler |
3 |
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Reporting addresses:
Sunspot Reports
Email: solar@aavso.org
Postal Mail: AAVSO, 25
Birch St. Cambridge, MA, 02138
Fax: 617-354-0665
SID Flare Reports
Email: noatak@aol.com
Postal Mail: Mike Hill,
114 Prospect St., Marlboro, MA, 01752
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10 cm Solar Flux and American Relative Sunspot Numbers (Ra) for October 2006
(10cm Source: http://www.drao.nrc.ca/icarus) |
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Smoothed Mean Sunspot Numbers (Rsm) from January 2000 to April 2006 (Waldmeier method). |
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