Results of the IMO Video Meteor Network - March 2008
====================================================

A strong February was followed by a weak March. The weather was ok at the 
begin and end of March, but all the remaining time it was at least in central 
Europe unsteady and rarely co-operative. Only our two American observers 
enjoyed better weather and collected most observing time of all. Thanks to 
the constantly large number of observers (the data from three cameras are 
still missing), we managed to record once more almost 3000 meteors in well 
above thousand hours of observing time.

The highlight of last month was reported from Brannenburg: On March 6, 
00:09:50 UT, Wolfgang Hinz recorded an unusual double meteor (Figure 1, left). 
It's not unusual because two meteors appeared by chance at the same instant, 
but because they appeared in parallel and exactly at the same time. In the 
course of the years I have seen hundreds of thousand video meteor from the 
camera network, but this one is unique. I was still thinking about a 
"terrestrial" explanation for this event (one camera, for example, recorded 
reflections for some time, that looked remarkably similar - but they appeared 
for all bright meteors) when I received a message that Wolfgang had recorded 
another double meteor of the same type on March 9, 23:35:44 UT (Figure 2).


Figure 1: Double meteor from March 6, 2008, recorded by Wolfgang Hinz with 
AKM2 (left). The same meteor was captured by Sirko Molau from Seysdorf with 
MINCAM1 (right). Here only one meteor is visible on the first glimpse, but 
the second one becomes visible at high magnification.

What a strange coincidence, but after a longer inspection of the recording 
birds, insects and other artefacts could be ruled out. Then I remembered that 
the fields of view of AKM2 and MINCAM1 overlap partly. Indeed I found that at 
least the first meteor was recorded by both cameras (Figure 1, right). 
However, the recording of Mincam1 showed only one meteor. Only at higher 
magnification it became clear that this meteor was "split". In fact, both 
meteors were recorded by MINCAM1, but they were not as clearly separated 
because of the lower scale and maybe also because of the different geometry.



Figure 2: Already on March 9, 2008, Wolfgang Hinz recorded another double 
meteor.
 
That proves the reality of these events: Wolfgang Hinz recorded indeed two 
double meteors within just three days and I have no explanation for this 
"double first prize". 


1. Observers
============

Code    Name        Place           Camera         FOV    LM Nights Time Meteors
--------------------------------------------------------------------------------
BRIBE Brinkmann   Herne         HERMINE (0.8/6)   55 dg  3 mag 19   31.4 h    79
CASFL Castellani  Monte Baldo   BMH1 (0.8/6)      55 dg  3 mag 18   76.6 h   112
                                BMH2 (0.8/6)      55 dg  3 mag 20  116.8 h   130
CRIST Crivello    Valbrevenna   STG38 (0.8/3.8)   80 dg  3 mag  1    7.7 h    16
GONRU Goncalves   Tomar         TEMPLAR1(0.8/3.8) 80 dg  3 mag  9   63.8 h    97
HERCA Hergenroth. Tucson        SALSA (1.2/4)     80 dg  3 mag 25  211.8 h   232
HINWO Hinz        Brannenburg   AKM2 (0.85/25)    32 dg  6 mag  8   58.3 h   111
KACJA Kac         Kostanjevec   METKA (0.8/8)     42 dg  4 mag 13   88.6 h   150
                  Kamnik        REZIKA (0.8/6)    55 dg  3 mag 13   57.2 h    95
                  Ljubljana     ORION1 (0.8/8)    42 dg  4 mag  5   31.1 h    44
KOSDE Koschny     Noordwijkerh. ICC4 (0.85/25)    25 dg  5 mag  3   14.6 h    19
LUNRO Lunsford    Chula Vista   BOCAM (1.4/50)    60 dg  6 mag 16  122.7 h   331
MOLSI Molau       Seysdorf      AVIS2 (1.4/50)    60 dg  6 mag 11   57.5 h   385
                                MINCAM1 (0.8/6)   55 dg  3 mag 22   70.3 h   181
PRZDA Przewozny   Berlin        ARMEFA (0.8/6)    55 dg  3 mag 13   66.8 h   180
ROBBI Roberto     Verona        FIAMENE (0.8/3.8) 80 dg  3 mag 13   63.4 h   102
SLAST Slavec      Ljubljana     KAYAK1 (1.8/28)   50 dg  4 mag 12   48.2 h    72
STOEN Stomeo      Scorze        MIN38 (0.8/3.8)   80 dg  3 mag 12   77.2 h   146
STORO Stork       Ondrejov      OND1 (1.4/50)     55 dg  6 mag  1    3.5 h    45
STRJO Strunk      Herford       MINCAM2 (0.8/6)   55 dg  3 mag 14   20.4 h    36
                                MINCAM3 (0.8/8)   42 dg  4 mag  5   12.5 h    23
                                MINCAM5 (0.8/6)   55 dg  3 mag  7   23.8 h    48
WEBMI Weber       Chouzava      TOMIL (1.4/50)    50 dg  6 mag  1    2.5 h    23
YRJIL Yrjola      Kuusankoski   FINEXCAM (0.8/6)  55 dg  3 mag  9   61.3 h   106
--------------------------------------------------------------------------------
Sum                                                            31 1388.0 h  2763


2. Observing Times (h)
======================

Mar    01   02   03   04   05   06   07   08   09   10   11   12   13   14   15
--------------------------------------------------------------------------------
BRIBE  0.7   -   2.1  1.1  0.3   -   2.5   -   0.7   -   0.8  0.5   -   6.8  1.3
CASFL  5.1  8.0  2.4   -  10.9   -    -    -    -    -    -   4.9  9.4  2.0   - 
      11.1 10.0  1.0   -  10.9   -    -    -    -    -  10.5 10.5 10.4  3.7   -
CRIST   -    -    -    -    -    -    -    -    -    -    -    -    -    -    -
GONRU  3.3  2.6   -  10.7 10.9 10.8   -    -    -    -    -    -    -    -    -
HERCA   -    -    -   9.5  5.4 10.6  4.5 10.5  8.3 10.4  8.7  9.9   -   8.6  8.3
HINWO   -    -    -    -   9.6  7.4   -   9.3 10.2   -    -    -    -    -    -
KACJA  9.5  9.0   -    -    -    -    -    -  10.0   -   9.4   -   7.6   -    - 
       1.7 10.0   -    -    -    -    -    -   0.5  0.6  3.1   -  10.1   -    - 
        -   7.2  5.0   -    -    -    -    -    -    -    -    -   7.1   -    -
KOSDE   -    -    -    -    -    -   7.0   -    -    -    -    -    -    -    -
LUNRO   -    -   7.9 10.4  6.0  5.8   -    -   8.3 10.2  9.9  9.9  3.0   -    -
MOLSI   -    -    -    -  10.3  9.2  2.4   -   7.5   -    -    -    -    -    - 
        -    -   3.1   -  11.0  9.0  0.4  3.8  6.3   -    -   3.1   -    -   1.6
PRZDA   -    -    -    -   5.0   -    -    -    -   4.5   -    -   4.2   -   3.3
ROBBI  2.0  3.4   -    -   5.4   -    -    -    -    -   3.5  7.0  7.4  3.0   -
SLAST  1.5  9.1   -    -   2.3   -    -    -   2.1   -   5.1  2.8  7.3   -    -
STOEN  6.1  7.2   -    -   9.6   -    -    -    -    -   3.1  7.2  9.3   -    -
STORO   -    -    -    -   3.5   -    -    -    -    -    -    -    -    -    -
STRJO   -    -   4.5  2.0   -    -    -    -   1.5  0.5  1.5   -   0.5  3.5  1.5
        -    -   6.0  2.5   -    -    -    -    -    -    -    -    -    -    - 
        -    -   7.5  6.3  0.7   -    -    -    -    -    -    -    -    -    -
WEBMI   -    -    -    -    -    -    -    -    -    -    -    -    -    -    -
YRJIL   -    -    -    -   9.3   -    -    -    -    -    -    -    -    -    -
--------------------------------------------------------------------------------
Sum   41.0 66.5 39.5 42.5111.1 52.8 16.8 23.6 55.4 26.2 55.6 55.8 76.3 27.6 16.0

Mar    16   17   18   19   20   21   22   23   24   25   26   27   28   29   30   31
-------------------------------------------------------------------------------------
BRIBE   -   1.2  0.3  0.4  0.3   -   0.3  5.4   -    -    -   1.0   -   1.7   -   4.0
CASFL  5.0   -   2.5  2.0  2.0  3.5  1.0  4.0  4.2   -    -    -   1.1  3.1   -   5.5
       5.3   -   1.0  6.5  0.5  1.0  1.5  4.0  9.8   -    -    -   2.6  7.5  2.0  7.0
CRIST   -    -    -    -    -    -    -    -    -    -    -    -    -   7.7   -    -
GONRU   -    -    -    -    -    -    -    -   9.0   -    -    -   2.7  4.3   -   9.5
HERCA  4.1   -  10.2  7.1 10.1  8.9  6.5  8.1  8.2  3.9 10.2 10.0 10.0   -   9.9  9.9
HINWO   -    -    -    -    -    -    -    -    -   2.8   -    -   2.8  9.0  7.2   -
KACJA   -    -   5.8  1.9  2.5   -    -    -    -   9.0  2.3   -    -   8.7  9.2  3.7
        -    -   4.1  3.9  2.8   -    -    -    -   7.7   -    -    -   0.8  9.5  2.4
        -    -    -    -    -    -   6.2   -    -    -   5.6   -    -    -    -    -
KOSDE   -    -    -    -    -    -   5.2   -   2.4   -    -    -    -    -    -    -
LUNRO   -    -  10.0  3.0   -    -   9.3  7.1  9.9  6.0  6.0   -    -    -    -    -
MOLSI   -    -   6.2   -    -    -   2.6   -    -   2.7   -   0.5   -   7.4  5.8  2.9
       0.2  0.5  7.7  0.2   -   5.1  3.2  0.9  0.7  3.3   -   2.6  1.1  3.9  2.2  0.4
PRZDA   -   4.9  5.3   -    -    -    -   7.7   -    -   6.5  2.6  2.9  9.3  6.6  4.0
ROBBI   -   3.2   -    -    -   1.5  3.0   -   3.3  3.0   -    -   4.0  5.1  4.2  4.4
SLAST   -    -    -    -    -    -    -    -    -   7.0  1.8   -    -   2.0  5.0  2.2
STOEN   -    -    -    -   6.2   -    -    -    -   9.8   -    -   3.6  7.3  1.0  6.8
STORO   -    -    -    -    -    -    -    -    -    -    -    -    -    -    -    -
STRJO   -   0.5   -    -    -    -    -   2.2  0.5   -   0.5   -    -   0.6   -   0.6
        -   2.0   -   1.5   -    -    -    -   0.5   -    -    -    -    -    -    - 
        -   3.7   -    -    -    -    -   3.2  1.0   -    -    -    -   1.4   -    -
WEBMI   -    -    -    -    -    -    -    -    -    -    -    -    -   2.5   -    -
YRJIL   -    -    -   1.8   -   8.8   -    -   7.5   -    -   6.7  5.2  7.6  6.8  7.6
-------------------------------------------------------------------------------------
Sum   14.6 16.0 53.1 28.3 24.4 28.8 38.8 42.6 57.0 55.2 32.9 23.4 36.0 89.9 69.4 70.9


3. Results (Meteors)
====================

Mar    01   02   03   04   05   06   07   08   09   10   11   12   13   14   15
--------------------------------------------------------------------------------
BRIBE   2    -    4    3    1    -    8    -    3    -    3    2    -   15    2
CASFL  12    9    2    -   15    -    -    -    -    -    -    9   11    2    - 
       11   15    1    -   11    -    -    -    -    -   11   11   13    3    -
CRIST   -    -    -    -    -    -    -    -    -    -    -    -    -    -    -
GONRU   1    3    -   14   23   16    -    -    -    -    -    -    -    -    -
HERCA   -    -    -   11    6    9    5   12    5    9   16   10    -   11   11
HINWO   -    -    -    -   34   12    -   22   19    -    -    -    -    -    -
KACJA  15   11    -    -    -    -    -    -   17    -   11    -   14    -    - 
        2   18    -    -    -    -    -    -    1    1    5    -   17    -    - 
        -   16    5    -    -    -    -    -    -    -    -    -    8    -    -
KOSDE   -    -    -    -    -    -    8    -    -    -    -    -    -    -    -
LUNRO   -    -   36   43    9   19    -    -   15   38   26   33    2    -    -
MOLSI   -    -    -    -   99   87   10    -   40    -    -    -    -    -    - 
        -    -   10    -   33   18    1    9   10    -    -    8    -    -    2
PRZDA   -    -    -    -   12    -    -    -    -    7    -    -   15    -   17
ROBBI   8    6    -    -   11    -    -    -    -    -    4   11   12    4    -
SLAST   4   15    -    -    5    -    -    -    2    -    6    6   12    -    -
STOEN  16   13    -    -   27    -    -    -    -    -    4   13   17    -    -
STORO   -    -    -    -   45    -    -    -    -    -    -    -    -    -    -
STRJO   -    -    7    3    -    -    -    -    3    1    2    -    1    8    2 
        -    -   11    4    -    -    -    -    -    -    -    -    -    -    - 
        -    -   15   14    1    -    -    -    -    -    -    -    -    -    -
WEBMI   -    -    -    -    -    -    -    -    -    -    -    -    -    -    -
YRJIL   -    -    -    -   23    -    -    -    -    -    -    -    -    -    -
--------------------------------------------------------------------------------
Sum    71  106   91   92  355  161   32   43  115   56   88  103  122   43   34

Mar    16   17   18   19   20   21   22   23   24   25   26   27   28   29   30   31
-------------------------------------------------------------------------------------
BRIBE   -    4    1    1    1    -    1   10    -    -    -    3    -    4    -   11
CASFL   7    -    4    4    3    4    3    3    7    -    -    -    1    3    -   13 
        4    -    2    5    1    1    2    4   11    -    -    -    3    5    4   12
CRIST   -    -    -    -    -    -    -    -    -    -    -    -    -   16    -    -
GONRU   -    -    -    -    -    -    -    -   24    -    -    -    1    4    -   11
HERCA   6    -   15    5   13    8   14    5   10    4    8    9   14    -    8    8
HINWO   -    -    -    -    -    -    -    -    -    2    -    -    1   10   11    -
KACJA   -    -   16    5    7    -    -    -    -   14    1    -    -   16   18    5 
        -    -   10    5    4    -    -    -    -   17    -    -    -    2    9    4 
        -    -    -    -    -    -    7    -    -    -    8    -    -    -    -    -
KOSDE   -    -    -    -    -    -    6    -    5    -    -    -    -    -    -    -
LUNRO   -    -   32    6    -    -   19   14   20   12    7    -    -    -    -    -
MOLSI   -    -   22    -    -    -    7    -    -   16    -    2    -   45   31   26 
        1    2   14    1    -   25    8    4    3   10    -    8    1    7    5    1
PRZDA   -   24   12    -    -    -    -   14    -    -   13    9    8   29   12    8
ROBBI   -    4    -    -    -    2    3    -    5    6    -    -    4    7    8    7
SLAST   -    -    -    -    -    -    -    -    -    7    1    -    -    4    8    2
STOEN   -    -    -    -    8    -    -    -    -   17    -    -    3   13    1   14
STORO   -    -    -    -    -    -    -    -    -    -    -    -    -    -    -    -
STRJO   -    1    -    -    -    -    -    4    1    -    1    -    -    1    -    1 
        -    6    -    1    -    -    -    -    1    -    -    -    -    -    -    - 
        -    6    -    -    -    -    -    7    2    -    -    -    -    3    -    -
WEBMI   -    -    -    -    -    -    -    -    -    -    -    -    -   23    -    -
YRJIL   -    -    -    1    -   14    -    -   14    -    -   11    7   17    6   13
-------------------------------------------------------------------------------------
Sum    18   47  128   34   37   54   70   65  103  105   39   42   43  209  121  136

Sirko Molau, 2008/04/18