Results of the IMO Video Meteor Network - January 2008
======================================================
The year 2008 started in a successful way. In particular in Germany the
weather was unusually good, so that several observers got more than 20
observing nights. At other sites, the weather was mediocre, but an overall
of 1,200 hours of observing time and 4,500 meteors are a decent result for
January. It remains to add that the data of SRAKA is not yet included
(Mihaela is about to finish her PhD - good luck!).
With respect to meteor activity, the Quadrantids were the only noticeable
shower. In the beginning it looked as if they would become a victim of poor
weather again, but right at the maximum skies cleared over eastern and
southern Germany, so that maximum activity could be covered by a number of
video cameras.
Figure 1 shows the activity profile of the shower as derived from data of
AKM2, MINCAM1, REMO1, ARMEFA and FINEXCAM. The data set (274 QUA, 81 SPO) was
splitted in 1/2 hour intervals, corrected for the radiant altitude, and averaged
over all five cameras. Interestingly, the Quadrantid activity was almost
constant between 01:00 and 04:30 UT, and increased only between 04:30 and
05:30.
Figure 1: Activity profile of the Quadrantids on the morning of January 4,
2008.
Some weeks ago, Geert Barentsen wrote how to use Google Earth for the
visualization of the cameras fields of view. He wrote a little web
application that takes the position of the camera and the coordinates of
the borders of fov as input, and creates a KML file required for Google Earth.
Based on this, I provided a small tool that creates the input for his web
application based on a MetRec reference star file. Depending on the camera,
either the full rectangular field of view is used, or you can mark the
borders of the real field of view in a comfortable way (e.g. in case of an
image-intensified camera with a circular fov). Currently, Geert and me are
still optimizing the result, but later the KML code generation shall be
integrated directly into the MetRec tool.
To show the ability of Google Earth I measured the fields of view of all
IMO network cameras and supplied the resulting KML file at www.imonet.org
for download. Figure 2 shows the geometry over southern Germany as an
example. It is easy to recognize that the field of view of MINCAM1
(Seysdorf, green) and AKM2 (Brannenburg, blue) overlap partly. A meteor pair
recorded by both cameras on January 3 confirms the result (Figure 3).
Figure 2: Fields of view of MINCAM1 and AKM2 displayed in Google Earth.
Figure 3: A meteor recorded by MINCAM1 (left) and AKM2 (right) on Jan 3,
2008, 22:42:49 UT.
Google Earth is well suited to align cameras in a double-station setup.
Further areas of application (e.g. the spatial visualization of meteor trails)
are currently under investigation.
1. Observers
============
Code Name Place Camera FOV LM Nights Time Meteors
--------------------------------------------------------------------------------
BENOR Benitez-S. Las Palmas TIMES4 (1.4/50) 20 dg 3 mag 8 10.5 h 33
TIMES5 (0.95/50) 10 dg 3 mag 5 1.6 h 13
BRIBE Brinkmann Herne HERMINE (0.8/6) 55 dg 3 mag 20 59.9 h 192
CASFL Castellani Monte Baldo BMH1 (0.8/6) 55 dg 3 mag 13 69.0 h 135
CRIST Crivello Valbrevenna STG38 (0.8/3.8) 80 dg 3 mag 1 6.7 h 11
EVAST Evans Moreton RF1 (0.8/12) 25 dg 5 mag 7 41.3 h 133
HINWO Hinz Brannenburg AKM2 (0.85/25) 32 dg 6 mag 21 150.6 h 584
KACJA Kac Kostanjevec METKA (0.8/8) 42 dg 4 mag 14 112.5 h 263
Kamnik REZIKA (0.8/6) 55 dg 3 mag 8 46.3 h 154
Ljubljana ORION1 (0.8/8) 42 dg 4 mag 13 61.6 h 160
KOSDE Koschny Noordwijkerh. ICC4 (0.85/25) 25 dg 5 mag 8 41.9 h 70
LUNRO Lunsford Chula Vista BOCAM (1.4/50) 60 dg 6 mag 14 95.9 h 518
MOLSI Molau Seysdorf AVIS2 (1.4/50) 60 dg 6 mag 12 58.2 h 479
MINCAM1 (0.8/6) 55 dg 3 mag 23 93.0 h 349
Ketzuer REMO1 (0.8/3.8) 80 dg 3 mag 22 86.6 h 314
PRZDA Przewozny Berlin ARMEFA (0.8/6) 55 dg 3 mag 13 35.3 h 166
ROBBI Roberto Verona FIAMENE (0.8/3.8) 80 dg 3 mag 12 64.8 h 170
SLAST Slavec Ljubljana KAYAK1 (1.8/28) 50 dg 4 mag 3 12.5 h 21
STOEN Stomeo Scorze MIN38 (0.8/3.8) 80 dg 3 mag 9 68.6 h 146
STORO Stork Ondrejov OND1 (1.4/50) 55 dg 6 mag 1 3.2 h 60
STRJO Strunk Herford MINCAM2 (0.8/6) 55 dg 3 mag 13 33.4 h 99
MINCAM3 (0.8/8) 42 dg 4 mag 2 7.6 h 12
MINCAM5 (0.8/6) 55 dg 3 mag 4 16.8 h 47
YRJIL Yrjola Kuusankoski FINEXCAM (0.8/6) 55 dg 3 mag 8 49.0 h 243
--------------------------------------------------------------------------------
Sum 31 1226.7 h 4372
2. Observing Times (h)
======================
Jan 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15
--------------------------------------------------------------------------------
BENOR - - - - - - - 0.9 - 0.5 - 3.5 2.2 - -
- - - - - - - - - - - 0.7 0.4 - -
BRIBE 4.3 1.5 0.4 2.3 - 6.6 3.4 5.2 3.1 0.2 0.4 5.9 7.7 0.3 -
CASFL - - - - - 10.7 11.7 5.7 8.7 3.0 - 0.5 - - -
CRIST - - - - - - - - - - - - - - -
EVAST - - - - 8.2 4.0 - 4.8 - - - - - - -
HINWO 8.1 13.0 8.7 7.7 - - 12.1 11.7 1.7 12.0 6.5 0.7 12.8 0.7 2.3
KACJA - - - - - 10.2 - 11.4 - - 2.7 - - 8.2 2.0
- - - - - - - - - 2.0 - - - - -
- - - 1.6 - - 0.9 - - 1.2 - - - - -
KOSDE - 0.7 - - 6.6 4.9 1.4 - 4.4 - - - - - -
LUNRO 9.0 - - - - - - - - - 9.9 11.8 9.9 10.3 9.4
MOLSI - - - - - 7.2 10.6 6.9 - 10.8 6.4 - - - -
- 0.7 9.7 4.7 - 7.6 9.1 11.6 0.5 8.0 4.0 - - 0.1 1.6
1.9 - 6.0 6.9 3.9 2.9 5.4 10.4 1.8 7.3 1.8 13.8 6.8 3.2 1.4
PRZDA - - 7.9 1.0 - 1.2 1.0 - 0.9 0.4 0.9 2.7 - 2.8 -
ROBBI - - - - - 8.4 7.1 2.3 3.3 - - - - - -
SLAST - - - 0.5 - - - - - - - - - - -
STOEN 10.6 - - - - - - 1.3 - - - - - - -
STORO - - - - - - - 3.2 - - - - - - -
STRJO 4.0 - 2.0 2.5 - 2.0 1.2 - - 2.1 1.3 1.7 12.1 1.0 -
- - - - - - - - - - - - 6.7 - -
- - - - - - - 2.8 3.0 - - - 8.3 - -
YRJIL - 4.5 9.0 13.9 14.5 - - - - - - - 4.3 0.3 -
--------------------------------------------------------------------------------
Sum 37.9 20.4 43.7 41.1 33.2 65.7 63.9 78.2 27.4 47.5 33.9 41.3 71.2 26.9 16.7
Jan 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
-------------------------------------------------------------------------------------
BENOR - - - 1.6 - - - - - - 0.3 1.4 - 0.1 - -
- - - 0.1 - - - - - - - - - 0.3 0.1 -
BRIBE 0.5 0.8 - - - - 2.8 - 6.7 0.8 - - - 0.3 6.7 -
CASFL - - 3.4 - 6.0 0.5 8.5 - - - - 2.5 0.5 7.3 - -
CRIST - - - - - - - - - - 6.7 - - - - -
EVAST - - - - - - - - 6.0 4.3 - 5.9 - - - 8.1
HINWO - 2.9 - - 8.7 - - 0.8 - 12.4 1.8 - 12.2 12.0 - 1.8
KACJA - - - 1.8 - 6.4 9.6 9.4 11.6 12.8 2.7 11.9 - 11.8 - -
0.7 9.4 9.5 - - - - - - 11.7 5.9 4.3 - 2.8 - -
- - - - - - 7.6 7.6 8.8 9.9 4.1 5.4 1.7 10.7 0.5 1.6
KOSDE - - - - - - - - 8.9 8.3 - - - - 6.7 -
LUNRO - - 7.6 11.8 8.8 1.0 - 2.2 - 0.4 1.2 - - - - 2.6
MOLSI - 1.0 - - - - - 0.4 - 3.0 1.2 - 2.2 5.4 - 3.1
- 1.2 - 1.3 5.2 1.2 2.5 4.5 - 2.4 1.0 0.1 5.4 7.8 - 2.8
4.0 1.0 - 0.4 - - 0.8 - 3.9 - - 1.1 0.4 - 1.5 -
PRZDA - - - - - - 0.5 - 2.3 - - 12.9 - - 0.7 -
ROBBI - - - 3.9 - - 9.8 5.3 - 6.3 5.3 - 8.7 1.7 - 2.7
SLAST - - - - - - - - - - - 4.8 - 7.2 - -
STOEN - - - - - - 7.5 11.5 8.0 11.6 3.9 - 2.0 12.2 - -
STORO - - - - - - - - - - - - - - - -
STRJO - - - - - - 1.0 - 2.0 - - - - - 0.5 -
- - - - - - - - 0.9 - - - - - - -
- - - - - - - - 2.7 - - - - - - -
YRJIL - - - - - - - - - - 0.6 1.9 - - - -
-------------------------------------------------------------------------------------
Sum 5.2 16.3 20.5 20.9 28.7 9.1 50.6 41.7 61.8 83.9 34.7 52.2 33.1 79.6 16.7 22.7
3. Results (Meteors)
====================
Jan 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15
--------------------------------------------------------------------------------
BENOR - - - - - - - 2 - 5 - 8 5 - -
- - - - - - - - - - - 4 4 - -
BRIBE 12 4 3 8 - 13 10 17 11 1 2 22 22 1 -
CASFL - - - - - 24 24 6 20 2 - 1 - - -
CRIST - - - - - - - - - - - - - - -
EVAST - - - - 47 12 - 19 - - - - - - -
HINWO 46 49 66 18 - - 68 62 7 58 17 2 47 1 4
KACJA - - - - - 22 - 44 - - 6 - - 15 3
- - - - - - - - - 3 - - - - -
- - - 3 - - 2 - - 2 - - - - -
KOSDE - 2 - - 10 6 3 - 9 - - - - - -
LUNRO 45 - - - - - - - - 53 67 64 55 69
MOLSI - - - - - 56 90 86 - 152 47 - - - -
- 2 111 15 - 22 26 47 1 33 11 - - 1 6
6 - 112 9 12 9 11 17 4 16 2 47 16 9 2
PRZDA - - 82 2 - 3 1 - 1 1 2 6 - 3 -
ROBBI - - - - - 24 16 4 9 - - - - - -
SLAST - - - 1 - - - - - - - - - - -
STOEN 21 - - - - - - 1 - - - - - - -
STORO - - - - - - - 60 - - - - - - -
STRJO 11 - 8 5 - 5 4 - - 6 5 4 12 2 -
- - - - - - - - - - - - 9 - -
- - - - - - - 10 13 - - - 16 - -
YRJIL - 8 114 43 58 - - - - - - - 9 1 -
--------------------------------------------------------------------------------
Sum 141 65 496 104 127 196 255 375 75 279 145 161 204 88 84
Jan 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
-------------------------------------------------------------------------------------
BENOR - - - 6 - - - - - - 2 4 - 1 - -
- - - 1 - - - - - - - - - 3 1 -
BRIBE 2 3 - - - - 14 - 26 4 - - - 1 16 -
CASFL - - 8 - 15 1 15 - - - - 4 1 14 - -
CRIST - - - - - - - - - - 11 - - - - -
EVAST - - - - - - - - 8 7 - 11 - - - 29
HINWO - 3 - - 33 - - 3 - 33 2 - 34 26 - 5
KACJA - - - 2 - 7 26 25 18 32 3 28 - 32 - -
1 30 34 - - - - - - 52 7 6 - 21 - -
- - - - - - 34 30 23 16 4 13 6 22 2 3
KOSDE - - - - - - - - 18 13 - - - - 9 -
LUNRO - - 42 51 38 1 - 16 - 1 2 - - - - 14
MOLSI - 3 - - - - - 1 - 8 4 - 5 16 - 11
- 4 - 4 12 1 12 24 - 2 1 1 4 7 - 2
10 4 - 2 - - 1 - 18 - - 4 1 - 2 -
PRZDA - - - - - - 2 - 8 - - 54 - - 1 -
ROBBI - - - 15 - - 23 15 - 16 11 - 19 2 - 16
SLAST - - - - - - - - - - - 8 - 12 - -
STOEN - - - - - - 23 29 18 26 5 - 2 21 - -
STORO - - - - - - - - - - - - - - - -
STRJO - - - - - - 2 - 5 - - - - - 30 -
- - - - - - - - 3 - - - - - - -
- - - - - - - - 8 - - - - - - -
YRJIL - - - - - - - - - - 2 8 - - - -
-------------------------------------------------------------------------------------
Sum 13 47 84 81 98 10 152 143 153 210 54 141 72 178 61 80
Sirko Molau, 2008/02/25