Results of the IMO Video Meteor Network - April 2006
====================================================

Even though we still had some sporadic snow at some places, spring finally
prevailed in central Europe in April. Consequently the weather improved and
nights were getting warmer, but at the same time rapidly shorter.

47 years after the fall of the "Pribram" meteorite and 4 years after "Neu-
schwanstein", there was again increased attention towards possible activity
of the "Pribramids" at the beginning of the month. In addition to the regular
observers, two Czech cameras joined once more the effort towards the expected
maximum of the shower. That in connection with the good weather yielded to a
remarkable data set. In a first analysis, 42 out of the 811 meteors from the
first half of April could be classified as "Pribramids". That is about twice
as much as last year (17 out of 693), but still there are only vague hints
on the existence of this shower. An analysis of more than 5000 meteors from
the video meteor database with the Radiant software did not yield a clearly
defined radiant. Neither resulted my automatic radiant search on the same
data set in any hit near the expected position. If the number of "Pribramids"
is plotted relative to the number of sporadic meteors, the picture looks
similar for 2005 and 2006. This, however, is by far not conclusive. Further 
observations are required to support the "Pribramid" hypothesis or to finally 
disprove it.



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

Code    Name        Place           Camera         FOV    LM Nights Time Meteors
--------------------------------------------------------------------------------
BENOR Benitez-S.  Las Palmas    TIMES% (0.95/50)  10 dg  3 mag   5   17.0 h   10
CASFL Castellani  Monte Baldo   BMH1 (0.8/6)      55 dg  3 mag  15   99.1 h  169
ELTMA Eltri       Venezia       MET38 (0.8/3.8)   80 dg  3 mag   3   18.9 h   88
EVAST Evans       Moreton       RF1 (0.8/12)      25 dg  5 mag   6   37.2 h   60
KACJA Kac         Kostanjevec   METKA (0.8/8)     42 dg  2 mag  11   68.1 h   64
                  Kamik         REZIKA (0.8/6)    55 dg  3 mag  11   71.1 h  228
KOSDE Koschny     Noordwijkerh. ICC3 (0.85/25)    25 dg  6 mag   5   19.3 h   29
LUNRO Lunsford    Chula Vista   BOCAM (1.4/50)    60 dg  6 mag  11   64.9 h  189
MOLSI Molau       Seysdorf      AVIS2 (1.4/50)    60 dg  6 mag  11   46.5 h  439
                                MINCAM1 (0.8/3.8) 80 dg  3 mag  18   83.1 h  116
SPEUL Sperberg    Salzwedel     AKM1 (0.85/25)    32 dg  6 mag   2   13.2 h   25
STOEN Stomeo      Scorze        MIN38 (0.8/3.8)   80 dg  3 mag   7   40.3 h  104
STORO Stork       Kunzak        KUN1 (1.4/50)     55 dg  6 mag   2   16.0 h   93
                  Ondrejov      OND1 (1.4/50)     55 dg  6 mag   3   18.3 h  192
STRJO Strunk      Leopoldshoehe MINCAM2 (0.8/6)   55 dg  3 mag  20   54.6 h   96
                                MINCAM3 (0.8/8)   42 dg  4 mag   3    6.6 h   18
TRIMI Triglav     Velenje       SRAKA (0.8/6)     55 dg  3 mag  17  110.1 h  216
YRJIL Yrjola      Kuusankoski   FINEXCAM (0.8/6)  55 dg  3 mag  15   62.1 h  228
--------------------------------------------------------------------------------
Sum                                                             30  833.2 h 2339


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

Apr    01   02   03   04   05   06   07   08   09   10   11   12   13   14   15
--------------------------------------------------------------------------------
BENOR   -    -    -   1.0   -    -    -   4.1   -   1.7   -    -    -    -   5.0
CASFL   -   4.3  6.1   -    -   2.5  8.8  8.3   -    -   8.0  8.3  8.3  5.0   -
ELTRI   -    -    -    -    -    -    -    -    -    -    -    -    -    -    -
EVAST   -    -    -   4.4   -    -    -    -    -    -   7.8   -   6.0   -    -
KACJA   -   6.3   -   7.5   -    -   9.2  1.1   -    -    -    -    -   8.8   -
       3.2  7.4  1.2  5.0   -    -   8.5  9.2   -    -    -    -    -    -    -
KOSDE  4.6  1.0   -   0.5   -    -    -    -    -    -    -    -    -   7.4   -
LUNRO   -    -    -    -    -    -   5.3   -   4.8  5.1   -   4.0  7.3  2.5   -
MOLSI   -   1.9   -    -    -   7.6  5.9   -    -    -    -    -    -    -    -
        -   1.5  1.6  1.3  3.2  9.3  9.2  4.0   -    -   6.0   -    -   4.8   -
STOEN   -    -   7.9  2.2   -    -    -    -    -    -    -    -   5.3  7.1   -
STORO   -    -    -    -    -   7.8  8.2   -    -    -    -    -    -    -    -
        -    -    -    -   2.8  8.6  6.9   -    -    -    -    -    -    -    -
STRJO  4.7  0.5  1.0  7.5  0.5  0.5   -   3.8  1.2  6.0   -   1.0  0.5  7.7   -
        -    -    -    -    -    -    -    -    -    -    -    -    -    -    -
TRIMI  4.0  8.8  8.8  5.0   -   3.8  8.7  8.7   -    -    -    -    -   8.3   -
YRJIL   -    -    -    -    -    -    -    -    -    -    -    -   2.3  5.2  3.0
--------------------------------------------------------------------------------
Sum   16.5 31.7 26.6 34.4  6.5 40.1 70.7 39.2  6.0 12.8 21.8 13.3 29.7 56.8  8.0

Apr    16   17   18   19   20   21   22   23   24   25   26   27   28   29   30
--------------------------------------------------------------------------------
BENOR  5.2   -    -    -    -    -    -    -    -    -    -    -    -    -    -
CASFL  2.7   -    -    -    -   7.9  8.2  8.1   -    -   7.9   -    -    -   4.7
ELTRI   -    -    -    -   6.2  6.6   -    -   6.1   -    -    -    -    -    -
EVAST  5.7   -    -    -    -    -    -    -    -   6.6   -    -    -   6.7   -
KACJA  6.1   -    -    -    -   8.4  8.0  2.3  7.2  3.2   -    -    -    -    -
        -    -    -    -    -   7.6  7.9  8.3  8.2  4.6   -    -    -    -    -
KOSDE   -    -    -    -    -    -    -    -   5.8   -    -    -    -    -    -
LUNRO   -    -   8.6  8.3  8.7   -    -    -   5.0  5.3   -    -    -    -    -
MOLSI   -   4.3   -   4.2  5.3  0.8  3.4  6.7  3.5   -    -    -    -    -   2.9
        -    -   1.5  5.5  8.4  8.4  5.3  8.2  3.2   -    -    -    -   0.9  0.8
STOEN   -    -    -    -   4.2   -    -   6.7  6.9   -    -    -    -    -    -
STORO   -    -    -    -    -    -    -    -    -    -    -    -    -    -    -
        -    -    -    -    -    -    -    -    -    -    -    -    -    -    -
STRJO   -    -   1.5  1.0   -    -    -   5.0  3.2   -    -   3.6  0.5  3.4  1.5
        -    -    -    -    -    -    -    -   3.8   -    -   0.4   -    -   2.4
TRIMI  7.2  2.0   -   1.0  8.2  8.2  8.2  6.1  8.1  5.0   -    -    -    -    -
YRJIL  4.0   -    -   4.3   -   5.2  4.5  4.9  4.7  3.7  4.5  4.3  3.7  4.0  3.8
--------------------------------------------------------------------------------
Sum   30.9  6.3 11.6 24.3 41.0 53.1 45.5 56.3 65.7 28.4 12.4  8.3  4.2 15.0 16.1


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

Apr    01   02   03   04   05   06   07   08   09   10   11   12   13   14   15
--------------------------------------------------------------------------------
BENOR   -    -    -    1    -    -    -    1    -    1    -    -    -    -    5
CASFL   -    6   15    -    -    4   15    6    -    -    8   21   13    7    -
ELTRI   -    -    -    -    -    -    -    -    -    -    -    -    -    -    -
EVAST   -    -    -    8    -    -    -    -    -    -   14    -    6    -    -
KACJA   -    4    -    6    -   10    9    2    -    -    -    -    -    6    -
        1   15    3   13    -    -   25   33    -    -    -    -    -    -    -
KOSDE  10    1    -    1    -    -    -    -    -    -    -    -    -   11    -
LUNRO   -    -    -    -    -    -   26    -   18   28    -    8   13    3    -
MOLSI   -    9    -    -    -   74   54    -    -    -    -    -    -    -    -
        -    3    4    2    4    8    9    3    -    -    6    -    -   13    -
STOEN   -    -   34    1    -    -    -    -    -    -    -    -   15   13    -
STORO   -    -    -    -    -   36   57    -    -    -    -    -    -    -    -
        -    -    -    -   25   92   75    -    -    -    -    -    -    -    -
STRJO   9    1    2   12    1    1    -    8    3    9    -    2    1   10    -
        -    -    -    -    -    -    -    -    -    -    -    -    -    -    -
TRIMI   7   12   18    7    -    4   23   16    -    -    -    -    -   16    -
YRJIL   -    -    -    -    -    -    -    -    -    -    -    -    5   11    5
--------------------------------------------------------------------------------
Sum    27   51   76   51   30  229  293   69   21   38   28   31   53   90   10

Apr    16   17   18   19   20   21   22   23   24   25   26   27   28   29   30
--------------------------------------------------------------------------------
BENOR   2    -    -    -    -    -    -    -    -    -    -    -    -    -    -
CASFL   2    -    -    -    -   20   21   15    -    -   12    -    -    -    4
ELTRI   -    -    -    -   30   37    -    -   21    -    -    -    -    -    -
EVAST   8    -    -    -    -    -    -    -    -   12    -    -    -   12    -
KACJA   5    -    -    -    -    -   11    3    7    1    -    -    -    -    -
        -    -    -    -    -   36   40   28   26    8    -    -    -    -    -
KOSDE   -    -    -    -    -    -    -    -    6    -    -    -    -    -    -
LUNRO   -    -   14   24   28    -    -    -   14   13    -    -    -    -    -
MOLSI   -   53    -   20   30    2   41   77   36    -    -    -    -    -   43
        -    -    2    6    8   22    9   10    5    -    -    -    -    1    1
STOEN   -    -    -    -   11    -    -   17   13    -    -    -    -    -    -
STORO   -    -    -    -    -    -    -    -    -    -    -    -    -    -    -
        -    -    -    -    -    -    -    -    -    -    -    -    -    -    -
STRJO   -    -    6    2    -    -    -    6    6    -    -    5    1    7    4
        -    -    -    -    -    -    -    -    8    -    -    1    -    -    9
TRIMI  13    3    -    1   11   17   34   12   16    6    -    -    -    -    -
YRJIL   1             22        26   33   43   23    7   12   11    4   12   13
--------------------------------------------------------------------------------
Sum    31   56   22   75  118  160  189  211  181   47   24   17    5   32   74

Sirko Molau, 2006/05/18