Results of the IMO Video Meteor Network - November 2007
=======================================================
Just like in October, the weather of last month was not particularly
favourable. On the contrary: Whereas in the first half of the month at least
the Italian observers enjoyed a number of clear nights, it was overcasted at
all sites after the Leonid maximum. The weather was especially poor between
November 21 and 25, such that on November 24 not a single meteor could be
recorded in the camera network. Towards the end the weather improved slightly -
this time mainly for the more northern observers.
In summary, only two observers managed to collect more than 20 observing
nights, and with 1500 hours and 6000 meteors, the total of November was
mediocre, too.
Last month we could welcome a new observer in the camera network, even though
his first observation date back from June. With his 87 years, Milos Weber of
the Czech Republic has become the by far oldest observer in the video network.
Milos is especially interested in the June Lyrids, and so he decided to
analyse this shower not only by means of visual observations, but also with a
video camera. Milos is supported by his nephew Tomas Weber, who helped to
install the hardware and software, and to analyse the video tapes. Milos
applies a 50 mm lens, an image intensifier and a digital camcorder. Now the
first four observations of June 2007 were analysed. Within four hours of
observing time, 55 meteors were recorded.
The highlight of November was not a meteor shower, but a typical source for
meteors, a comet. On October 24, comet 17/P Holmes experienced a sheer
incredible outburst increasing its brightness by 15 magnitudes. Typically this
comet would be visible in large telescopes only, but after the outburst the
constellation of Perseus all of a sudden showed a new "star" of third
magnitude. In November, the coma of 17/P Holmes increased significantly and
the comet became to the naked eye a blurred spot that moved through Perseus
and faded slowly.
Our meteor cameras are not particularly well suited for comet observations,
but as the comet was bright enough and all night long placed high in the sky,
it was recorded by a number of cameras. The best pictures were provided by
Wolfgang Hinz with AKM2. This camera has not only a good limiting magnitude
thanks to the image intensifier, but also a relatively small field of view
of 30 degree, such that also the diffuse appearance became visible.
The following picture shows the comet between October 17 (i.e. before the
outburst) and December 8. Please, pay attention to the image of November 5,
when two meteors appeared in parallel near the comet.
1. Observers
============
Code Name Place Camera FOV LM Nights Time Meteors
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BENOR Benitez-S. Las Palmas TIMES4 (1.4/50) 20 dg 3 mag 13 40.3 h 121
TIMES5 (0.95/50) 10 dg 3 mag 11 22.0 h 58
BRIBE Brinkmann Herne HERMINE (0.8/6) 55 dg 3 mag 19 59.4 h 291
CASFL Castellani Monte Baldo BMH1 (0.8/6) 55 dg 3 mag 22 166.0 h 428
CRIST Crivello Valbrevenna STG38 (0.8/3.8) 80 dg 3 mag 4 36.4 h 200
ELTMA Eltri Venezia MET38 (0.8/3.8) 80 dg 3 mag 7 79.7 h 358
EVAST Evans Moreton RF1 (0.8/12) 25 dg 5 mag 10 76.5 h 375
HINWO Hinz Brannenburg AKM2 (0.85/25) 32 dg 6 mag 11 73.7 h 473
KACJA Kac Kostanjevec METKA (0.8/8) 42 dg 4 mag 14 107.0 h 462
Kamnik REZIKA (0.8/6) 55 dg 3 mag 17 86.3 h 385
Ljubljana ORION1 (0.8/8) 42 dg 4 mag 12 66.6 h 402
LUNRO Lunsford Chula Vista BOCAM (1.4/50) 60 dg 6 mag 5 32.7 h 382
MOLSI Molau Seysdorf AVIS2 (1.4/50) 60 dg 6 mag 6 33.2 h 219
MINCAM1 (0.8/6) 55 dg 3 mag 17 66.1 h 229
ROBBI Roberto Verona FIAMENE (0.8/3.8) 80 dg 3 mag 21 152.5 h 511
SLAST Slavec Ljubljana KAYAK1 (1.8/28) 50 dg 4 mag 14 75.6 h 192
STOEN Stomeo Scorze MIN38 (0.8/3.8) 80 dg 3 mag 13 111.7 h 573
STORO Stork Ondrejov OND1 (1.4/50) 55 dg 6 mag 1 2.7 h 67
STRJO Strunk Herford MINCAM2 (0.8/6) 55 dg 3 mag 12 12.3 h 37
MINCAM3 (0.8/8) 42 dg 4 mag 1 1.9 h 8
TRIMI Triglav Velenje SRAKA (0.8/6) 55 dg 3 mag 19 109.1 h 399
YRJIL Yrjola Kuusankoski FINEXCAM (0.8/6) 55 dg 3 mag 7 43.8 h 210
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Sum 29 1455.5 h 5979
2. Observing Times (h)
======================
Nov 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15
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BENOR - 2.3 4.2 2.8 3.1 2.8 - - - - 0.3 - 0.9 0.1 -
- 0.9 2.3 1.5 0.9 - - - - - 2.6 0.3 - - -
BRIBE - - 1.5 - 5.0 0.3 4.5 - - - 7.0 3.5 0.5 - 1.5
CASFL 11.5 10.1 12.1 11.2 - 12.3 8.8 2.3 12.4 10.6 9.2 - 1.0 3.7 6.6
CRIST - 6.8 10.9 - - - - - - 9.1 - - - - -
ELTMA 11.2 - 11.6 - - 9.2 - - 11.0 - - 12.1 - - 12.2
EVAST 7.4 7.4 6.8 - 7.7 - - 4.4 - - 8.7 - 9.4 10.3 10.7
HINWO 11.7 6.1 - - 7.4 - - - - - - - - - -
KACJA 10.5 4.6 9.2 4.6 6.0 - - - 8.5 1.8 - 10.2 - - 1.3
12.2 8.2 5.0 2.5 5.4 3.1 0.9 - - - 4.1 12.1 - 0.8 9.3
7.4 4.6 6.6 - 1.8 - - 1.3 8.9 1.9 - 3.4 - - 4.4
LUNRO - - - - - - - - - - 3.4 - 10.7 11.0 3.3
MOLSI - - - - 5.8 - - - - - - - - - 5.5
10.6 - - 0.2 6.0 2.1 - - - 1.8 3.8 - - 0.3 8.0
ROBBI - 11.0 10.0 9.1 - 10.1 7.1 1.1 9.2 9.2 6.2 10.7 - 4.3 8.8
SLAST 8.8 7.4 4.0 - 2.2 4.8 7.7 1.8 8.3 3.0 1.8 11.9 2.2 - 9.2
STOEN 10.7 11.3 12.0 - - 12.3 - 3.7 11.2 - 1.4 11.4 - 4.8 11.9
STORO - - - - - - - - - - - - - - -
STRJO - - - - 1.0 - - - - - 1.0 - 1.3 0.8 0.5
- - - - - - - - - - - - - - -
TRIMI 12.8 3.1 6.8 0.5 4.5 7.3 4.0 2.0 7.3 2.2 1.5 9.7 - - 3.7
YRJIL 2.7 8.6 2.5 12.6 - - - - - - - - - - -
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Sum 117.5 92.4105.5 45.0 56.8 64.3 33.0 16.6 76.8 39.6 51.0 85.3 26.0 36.1 96.9
Nov 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
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BENOR 6.9 4.1 6.4 1.0 5.4 - - - - - - - - - -
4.2 0.8 3.3 0.2 5.0 - - - - - - - - - -
BRIBE 2.8 3.3 8.5 - 1.5 7.3 - 0.3 - 0.9 0.6 2.3 2.8 5.3 -
CASFL 11.1 6.7 5.7 8.8 1.0 - - - - 4.8 7.7 1.0 - 7.4 -
CRIST - 9.6 - - - - - - - - - - - - -
ELTMA 12.4 - - - - - - - - - - - - - -
EVAST - - - - - - 3.7 - - - - - - - -
HINWO 7.8 5.4 12.4 - 1.7 - - - - - - 4.3 12.7 3.9 0.3
KACJA - - - - - - - - - - 11.4 13.0 13.2 10.1 2.6
- - - - 1.7 - - - - - 6.5 5.7 3.4 0.5 4.9
- - - - - - - - - - - 10.6 2.6 13.1 -
LUNRO 4.3 - - - - - - - - - - - - - -
MOLSI 4.9 - - - - - - - - - - 8.9 5.2 2.9 -
4.0 0.2 0.4 - - - - - - 1.4 0.8 13.4 6.4 6.3 0.4
ROBBI 10.3 5.4 3.4 7.4 3.4 - - - - - - 2.5 2.5 10.2 10.6
SLAST - - - - - - - - - - - - 2.5 - -
STOEN 12.6 - - - - - - - - - 3.4 - - - 5.0
STORO - - 2.7 - - - - - - - - - - - -
STRJO - - 1.3 - 0.8 2.8 - 1.0 - - 0.5 - 0.8 0.5 -
- - - - - - - 1.9 - - - - - - -
TRIMI - - - - 6.5 - - - - - 6.6 10.3 6.5 10.5 3.3
YRJIL - - - 6.3 - - - 4.7 - - - - 6.4 - -
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Sum 81.3 35.5 44.1 23.7 27.0 10.1 3.7 7.9 - 7.1 37.5 72.0 65.0 70.7 27.1
3. Results (Meteors)
====================
Nov 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15
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BENOR - 7 8 8 7 6 - - - - 2 - 5 1 -
- 5 6 3 3 - - - - - 8 1 - - -
BRIBE - - 3 - 29 1 20 - - - 41 12 2 - 5
CASFL 31 24 30 25 - 30 17 4 28 20 8 - 3 4 38
CRIST - 38 48 - - - - - - 36 - - - - -
ELTMA 53 - 46 - - 46 - - 52 - - 50 - - 54
EVAST 48 32 28 - 36 - - 23 - - 35 - 37 72 49
HINWO 80 23 - - 30 - - - - - - - - - -
KACJA 75 10 32 15 32 - - - 53 4 - 47 - - 2
95 43 10 7 15 10 4 - - - 6 71 - 1 60
41 17 60 - 15 - - 1 66 2 - 34 - - 13
LUNO - - - - - - - - - - 45 - 88 90 134
MOLSI - - - - 29 - - - - - - - - - 62
37 - - 1 14 5 - - - 3 25 - - 1 27
ROBBI - 34 44 35 - 26 35 2 39 30 12 31 - 10 26
SLAST 25 23 6 - 2 9 13 5 38 3 7 32 3 - 18
STOEN 71 63 54 - - 73 - 10 60 - 4 56 - 14 79
STORO - - - - - - - - - - - - - - -
STRJO - - - - 3 - - - - - 2 - 4 3 1
- - - - - - - - - - - - - - -
TRIMI 54 8 25 3 19 24 13 6 27 6 2 33 - - 17
YRJIL 16 31 3 67 - - - - - - - - - - -
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Sum 626 358 403 164 234 230 102 51 363 104 197 367 142 196 585
Nov 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
BENOR 25 17 23 2 10 - - - - - - - - - -
11 4 8 1 8 - - - - - - - - - -
BRIBE 17 23 49 - 3 37 - 2 - 5 3 11 8 20 -
CASFL 36 27 19 19 1 - - - - 15 22 1 - 26 -
CRIST - 78 - - - - - - - - - - - - -
ELTMA 57 - - - - - - - - - - - - - -
EVAST - - - - - - 15 - - - - - - - -
HINWO 58 67 93 - 1 - - - - - - 41 67 11 2
KACJA - - - - - - - - - - 38 56 51 40 7
- - - - 3 - - - - - 17 9 13 1 10
- - - - - - - - - - - 59 24 70 -
LUNRO 25 - - - - - - - - - - - - - -
MOLSI 36 - - - - - - - - - - 54 26 12 -
7 1 1 - - - - - - 3 1 75 15 8 5
ROBBI 42 19 26 28 8 - - - - - - 4 5 19 36
SLAST - - - - - - - - - - - - 8 - -
STOEN 79 - - - - - - - - - 6 - - - 4
STORO - - 67 - - - - - - - - - - - -
STRJO - - 5 - 3 9 - 3 - - 1 - 2 1 -
- - - - - - - 8 - - - - - - -
TRIMI - - - - 24 - - - - - 24 36 19 43 16
YRJIL - - - 48 - - - 20 - - - - 25 - -
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Sum 393 236 291 98 61 46 15 33 - 23 112 346 263 251 80
Sirko Molau, 2007/12/17