(meteorobs) Geminids 2004 Dutch Meteor Society

Koen Miskotte k.miskotte at wxs.nl
Sun Dec 19 06:24:38 EST 2004


Hello,
Below you find my data of the Geminid maximum night 13/14-12-2004. Together 
with a couple of friends (Sietse Dijkstra, Judith Dijkstra, Casper ter 
Kuile, Carl Johannink, Michel Vandeputte, Rita Verhoef and Arnold Tukkers) I 
observed this meteor stream from the top of the Kahler Asten, a mountain of 
841 meters above sea level in the Sauerland region, near the city of 
Winterberg. This is just east of the Netherlands in Germany. On top of this 
mountain, we stayed well above the inversian layer (filled with fog, smog 
and clouds up to 600 meters above sea level) which covered almost western 
Europe. There we had a brilliant look on the Geminids, with limithing 
magnitudes up to 6.8! We observed, depending on netto observating time and 
cp , between 500 and 1100 meteors each observer! I ended up with 1003 
meteors  during 7.98 hours!
And what a show the Geminids put up. First we had the maximum somewhere 
around 20-23 UT. Sometimes we counted up to 20 meteors within 5 minutes! 
After a while , when rates slowly go down, bright Geminids appeared.
A short list of the brightest meteors:
21:23 -3 gem in Aqr
20:40 -3 Gem in Cetus
20:53 -3 Gem
22:05 -4 Gem
23:29 -3 Gem
23:56 -3 Gem
00:07 -4 gem
0:46 -4 Gem  Captured with my Canon 10D and a Canon T70 both with Canon 
2.8/15 mm fish eye lens
0:55 -3 Gem
1:33 -4 Gem  Captured  digital all sky
1:38 -4 Gem
1:39 -5 Gem  Captured T70 all sky
1:40 -5 Gem  Captured T70 west
2:40 -6 Gem  Captured T70, shot throught Orion, brilliant picture.
2:08 -4 Gem
2:43 -5 Gem
2:46 -3 Gem

During these night I had my Canon EOS 10D with a Canon EOS 2.8/15 mm fish 
eye lens end my "old" Canon T70 with a Canon FD 2.8/15 mm fishe eye pointed 
in eastern and southern direction. During a quick look i found 26 Geminids 
on the Kodak Elite II color slide film from the Canon T70 and about 30 
meteors captured digital with the 10D camera.
These meteor pictures are not yet on the Internet. But some pictures of my 
friends you'll find on the DMS website :
http://www.dmsweb.org/

So, it really was a great campaign. With many thanks to my fellow observers. 
I had a great time!
Koen





Date     :  Year : 2004 Mo : 12 Date 13/14
Observer :  Koen Miskotte
IMO-Code :  MISKO
Adres    :  De La Reystraat 92, 3851 BK Ermelo, The Netherlands
Phone    :  031-(0)341-558729
E-mail   :  k.miskotte at wxs.nl
Observing place : Kahler Asten Country : Germany
Coordinates     : EL 8 28   NB 51 11
Center of vision1 : RA  : 02h30m Dec : 25  At    : 20:15 UT
Center of vision2 : RA  : 07h00m Dec : 25  After : 03:57 UT
Start UT :  20:14
End UT   :   4:57
Teff [h] :   7,97

Shower alpha delta Shower  alpha delta
GEM     112    33   HYD     126     2
MON     103     8   XOR      94    23

Period UT     Tm    T.eff  Lm  Stream           Spo  Ntot Cloud M
Start End     [h]    [h]       GEM MON HYD XOR
20:14 21:14  20,73  1,00   6,7 125  0   0   1    15   141       C
21:14 22:14  21,73  0,93   6,7 128  0   0   0    12   140       C
22:14 23:14  22,73  0,92   6,7 113  1   1   1     7   123       C
23:14  0:14  23,73  1,00   6,7 120  0   0   1     7   128       C
 0:14  1:22   0,80  0,92   6,7 110  0   1   1    15   127       C
 1:22  2:22   1,87  1,00   6,7 127  0   1   2    12   142       C
 2:22  3:37   2,98  1,02   6,7  87  0   0   0     8    95       C
 3:37  4:57   4,28  1,18   6,6  86  0   0   0    21   107       C

20:14  4:57   0,58  7,97       896  1   3   6    97  1003

Stream  -6 -5 -4 -3 -2 -1  0  1  2   3   4   5   6 total mean
GEM      2  2  6  7 11 23 42 54 135 233 219 116 46 896   2,97
MON      0  0  0  0  0  0  0  0  0   1   0   0   0   1   3,00
HYD      0  0  0  0  0  0  0  0  1   0   2   0   0   3   3,33
XOR      0  0  0  0  0  0  0  1  0   2   2   1   0   6   3,33
Sporadic 0  0  0  0  0  0  1  2  7  26  33  22   6  97   3,84

Remarks:
Very clear sky! Also at lower altitudes! Many bright Geminids after 23 UT. 
About 60 Geminids captured on film

=============================================================================================================
Hourly distributions!!!
=============================================================================================================

Period UT     Tm    T.eff  Lm   Geminids Magnitude             Tot
Start  End   [h]     [h]        -6 -5 -4 -3 -2 -1  0  1   2   3   4   5   6 
Gem Mean
20:14 21:14  20,733  1,00  6,7   0  0  0  3  3  3  7  9  12  20  37  20  11 
125 3,08
21:14 22:14  21,733  0,93  6,7   0  0  1  0  1  4  5  5  22  34  29  17  10 
128 3,14
22:14 23:14  22,733  0,92  6,7   0  0  0  0  0  3  8  3  14  31  32  17   5 
113 3,22
23:14  0:14  23,733  1,00  6,7   0  0  2  1  0  6  4  7  20  37  21  16   6 
120 2,84
 0:14  1:22   0,800  0,92  6,7   0  0  1  1  3  2  6  6  19  33  22  15   2 
110 2,75
 1:22  2:22   1,867  1,00  6,7   1  1  2  1  3  0  4 11  20  30  37  10   7 
127 2,78
 2:22  3:37   2,983  1,02  6,7   1  1  0  1  1  1  4  7  17  19  19  12   4 
87 2,77
 3:37  4:57   4,283  1,18  6,6   0  0  0  0  0  4  4  6  11  29  22   9   1 
86 2,91
Totals                           2  2  6  7 11 23 42 54 135 233 219 116  46 
896

========================================================================================
Five minute counts and distributions!
========================================================================================

Period UT      Tm    T.eff  Lm   Geminids Magnitude              Tot
Start  End     [h]    [h]        -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 Gem
20:14 20:19  20,267  0,083  6,7   0  0  0  0  1  0 1 0 1 2 4 3 1  13
20:19 20:24  20,350  0,083  6,7   0  0  0  1  0  0 1 0 1 3 2 4 2  14
20:24 20:29  20,433  0,083  6,7   0  0  0  0  1  0 0 2 0 3 2 1 0   9
20:29 20:34  20,517  0,083  6,7   0  0  0  0  0  1 0 1 2 0 4 1 1  10
20:34 20:39  20,600  0,083  6,7   0  0  0  0  0  1 0 0 1 4 3 1 0  10
20:39 20:44  20,683  0,083  6,7   0  0  0  1  1  1 0 0 0 1 2 2 1   9
20:44 20:49  20,767  0,083  6,7   0  0  0  0  0  0 1 2 1 2 4 1 2  13
20:49 20:54  20,850  0,083  6,7   0  0  0  1  0  0 1 0 1 0 4 2 1  10
20:54 20:59  20,933  0,083  6,7   0  0  0  0  0  0 1 1 0 1 2 2 1   8
20:59 21:04  21,017  0,083  6,7   0  0  0  0  0  0 0 2 1 2 3 1 1  10
21:04 21:09  21,100  0,083  6,7   0  0  0  0  0  0 1 1 1 1 4 1 0   9
21:09 21:14  21,183  0,083  6,7   0  0  0  0  0  0 1 0 3 1 3 1 1  10
21:14 21:19  21,267  0,083  6,7   0  0  0  0  0  1 1 0 1 1 2 3 1  10
21:19 21:24  21,350  0,083  6,7   0  0  0  0  0  0 0 0 3 2 2 0 1   8
21:24 21:29  21,433  0,017  6,7   0  0  0  0  0  0 0 0 1 2 1 0 1   5
21:29 21:34  21,517  0,083  6,7   0  0  0  0  0  0 1 0 1 3 4 0 1  10
21:34 21:39  21,600  0,083  6,7   0  0  0  0  0  1 1 1 2 2 1 1 1  10
21:39 21:44  21,683  0,083  6,7   0  0  0  0  0  0 1 0 1 1 4 2 2  11
21:44 21:49  21,767  0,083  6,7   0  0  0  0  1  0 0 1 3 5 3 2 0  15
21:49 21:54  21,850  0,083  6,7   0  0  0  0  0  0 0 0 4 6 6 4 1  21
21:54 21:59  21,933  0,083  6,7   0  0  0  0  0  1 0 1 0 3 2 1 0   8
21:59 22:04  22,017  0,083  6,7   0  0  0  0  0  1 0 1 4 4 3 2 0  15
22:04 22:09  22,100  0,083  6,7   0  0  1  0  0  0 1 0 2 2 0 0 1   7
22:09 22:14  22,183  0,083  6,7   0  0  0  0  0  0 0 1 0 3 1 2 1   8
22:14 22:19  22,267  0,083  6,7   0  0  0  0  0  1 2 0 1 4 3 1 0  12
22:19 22:24  22,350  0,083  6,7   0  0  0  0  0  0 1 0 1 0 2 1 0   5
22:24 22:29  22,433  0,083  6,7   0  0  0  0  0  0 0 0 2 3 2 3 1  11
22:29 22:34  22,517  0,083  6,7   0  0  0  0  0  0 0 0 1 4 5 0 0  10
22:34 22:39  22,600  0,083  6,7   0  0  0  0  0  0 0 0 0 3 3 1 1   8
22:39 22:44  22,683  0,083  6,7   0  0  0  0  0  2 1 1 0 3 1 0 0   8
22:44 22:49  22,767  0,083  6,7   0  0  0  0  0  0 0 0 1 2 1 1 0   5
22:49 22:54  22,850  0,067  6,7   0  0  0  0  0  0 1 1 1 3 8 4 1  19
22:54 22:59  22,933  0,017  6,7   0  0  0  0  0  0 1 0 0 0 1 0 0   2
22:59 23:04  23,017  0,083  6,7   0  0  0  0  0  0 0 0 3 5 5 3 0  16
23:04 23:09  23,100  0,083  6,7   0  0  0  0  0  0 2 1 3 1 1 3 1  12
23:09 23:14  23,183  0,083  6,7   0  0  0  0  0  0 0 0 1 3 0 0 1   5
23:14 23:19  23,267  0,083  6,7   0  0  0  0  0  0 1 0 2 2 1 2 1   9
23:19 23:24  23,350  0,083  6,7   0  0  0  0  0  1 0 3 0 3 0 1 1   9
23:24 23:29  23,433  0,083  6,7   0  0  0  1  0  0 0 0 3 4 2 0 0  10
23:29 23:34  23,517  0,083  6,7   0  0  0  0  0  0 1 0 2 3 2 2 1  11
23:34 23:39  23,600  0,083  6,7   0  0  0  0  0  1 0 1 2 3 2 2 0  11
23:39 23:44  23,683  0,083  6,7   0  0  0  0  0  0 1 0 2 2 2 0 1   8
23:44 23:49  23,767  0,083  6,7   0  0  0  0  0  0 1 1 1 5 2 3 0  13
23:49 23:54  23,850  0,083  6,7   0  0  0  0  0  1 0 0 1 2 2 1 0   7
23:54 23:59  23,933  0,083  6,7   0  0  1  0  0  2 0 0 2 2 1 0 0   8
23:59  0:04   0,017  0,083  6,7   0  0  0  0  0  0 0 1 3 6 3 3 0  16
 0:04  0:09   0,100  0,083  6,7   0  0  1  0  0  1 0 1 1 3 1 1 1  10
 0:09  0:14   0,183  0,083  6,7   0  0  0  0  0  0 0 0 1 2 3 1 1   8
 0:14  0:19   0,267  0,083  6,7   0  0  0  0  0  0 0 0 2 1 2 1 0   6
 0:19  0:24   0,350  0,083  6,7   0  0  0  0  0  0 1 2 0 3 1 2 0   9
 0:24  0:29   0,433  0,083  6,7   0  0  0  0  1  0 1 0 2 2 0 2 0   8
 0:29  0:34   0,517  0,083  6,7   0  0  0  0  0  0 1 0 1 3 3 2 1  11
 0:34  0:39   0,600  0,083  6,7   0  0  0  0  0  0 0 0 3 2 4 0 0   9
 0:39  0:44   0,683  0,050  6,7   0  0  0  0  0  0 1 0 0 2 2 1 0   6
 0:46  0:51   0,800  0,083  6,7   0  0  1  0  1  0 0 2 1 4 1 2 0  12
 0:51  0:55   0,883  0,067  6,7   0  0  0  1  1  0 2 0 3 3 3 1 1  15
 0:55  1:07   1,017  0,200  6,7   0  0  0  0  0  1 0 0 4 4 5 4 0  18
 1:16  1:22   1,317  0,100  6,7   0  0  0  0  0  1 0 2 3 9 1 0 0  16
 1:22  1:27   1,400  0,083  6,7   0  0  0  0  0  0 0 2 5 3 4 1 0  15
 1:27  1:32   1,483  0,083  6,7   0  0  0  0  1  0 0 0 1 4 5 0 0  11
 1:32  1:37   1,567  0,083  6,7   0  0  1  0  0  0 0 0 3 4 1 2 1  12
 1:37  1:42   1,650  0,083  6,7   1  1  1  0  0  0 1 0 0 1 1 0 0   6
 1:42  1:47   1,733  0,083  6,7   0  0  0  0  0  0 1 1 1 3 4 1 0  11
 1:47  1:52   1,817  0,083  6,7   0  0  0  0  0  0 0 2 2 2 3 2 1  12
 1:52  1:57   1,900  0,083  6,7   0  0  0  0  0  0 0 2 2 2 3 2 1  12
 1:57  2:02   1,983  0,083  6,7   0  0  0  0  1  0 1 1 0 4 3 0 0  10
 2:02  2:07   2,067  0,083  6,7   0  0  0  0  0  0 0 1 3 1 3 1 1  10
 2:07  2:12   2,150  0,083  6,7   0  0  0  1  0  0 0 0 1 1 4 0 1   8
 2:12  2:17   2,233  0,083  6,7   0  0  0  0  1  0 0 0 2 4 3 1 1  12
 2:17  2:22   2,317  0,083  6,7   0  0  0  0  0  0 1 2 0 1 3 0 1   8
 2:22  2:27   2,400  0,083  6,7   0  0  0  0  0  0 1 1 2 0 2 1 0   7
 2:27  2:32   2,483  0,083  6,7   0  0  0  0  0  0 1 1 1 2 2 2 0   9
 2:32  2:37   2,567  0,083  6,7   0  0  0  0  0  0 0 0 0 0 0 1 1   2
 2:37  2:42   2,650  0,083  6,7   1  0  0  0  0  0 1 1 0 0 2 1 0   6
 2:42  2:47   2,733  0,083  6,7   1  0  1  0  0  0 0 3 2 3 2 0 0  12
 2:47  2:52   2,817  0,083  6,7   0  0  0  0  0  0 1 0 3 3 1 0 1   9
 2:52  3:00   2,933  0,133  6,7   0  0  0  0  0  0 0 1 1 2 3 2 0   9
 3:14  3:17   3,250  0,050  6,7   0  0  0  0  0  0 0 0 1 2 2 0 0   5
 3:17  3:22   3,317  0,083  6,7   0  0  0  0  0  1 0 0 0 2 2 1 0   6
 3:22  3:27   3,400  0,083  6,7   0  0  0  0  1  0 0 0 3 1 1 1 1   8
 3:27  3:32   3,483  0,083  6,7   0  0  0  0  0  0 0 0 1 3 1 1 1   7
 3:32  3:37   3,567  0,083  6,7   0  0  0  0  0  0 0 3 2 2 0 0 0   7
 3:37  3:42   3,650  0,083  6,7   0  0  0  0  0  3 1 1 0 3 3 2 1  14
 3:42  3:49   3,750  0,117  6,7   0  0  0  0  0  0 0 0 1 2 1 0 0   4
 3:58  4:02   4,000  0,067  6,7   0  0  0  0  0  0 0 0 1 2 0 0 0   3
 4:02  4:12   4,117  0,167  6,7   0  0  0  0  0  0 1 0 3 3 2 2 0  11
 4:12  4:17   4,233  0,083  6,7   0  0  0  0  0  0 0 1 1 3 3 2 0  10
 4:17  4:22   4,317  0,083  6,7   0  0  0  0  0  0 0 0 0 2 3 1 0   6
 4:22  4:27   4,400  0,083  6,7   0  0  0  0  0  0 0 1 2 1 0 0 0   4
 4:27  4:32   4,483  0,083  6,6   0  0  0  0  0  0 0 0 0 2 3 0 0   5
 4:32  4:37   4,567  0,083  6,6   0  0  0  0  0  0 0 1 0 5 3 1 0  10
 4:37  4:42   4,650  0,083  6,6   0  0  0  0  0  0 1 1 0 2 2 0 0   6
 4:42  4:47   4,733  0,083  6,6   0  0  0  0  0  0 0 0 1 2 1 1 0   5
 4:47  4:52   4,817  0,083  6,6   0  0  0  0  0  0 0 1 1 1 0 0 0   3
 4:52  4:57   4,900  0,083  6,6   0  0  0  0  0  1 1 0 1 1 1 0 0   5



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