Results of the IMO Video Meteor Network - June 2004
===================================================

The Juni Bootids were the highlight of the previous month. This minor shower
experienced an unexpected outburst in 1998 with a maximum ZHR of 100, but
was almost not noticable in the following years. Based on numerical models,
enhanced rates were predicted for 2004, namely in the intervall 10 to 19 UT on
June 23. 

In the night of June 22/23, three central European observers had part or full
time clear skies, and in the following night two observers. A first inspection
of the data yielded clear activity of the June Bootids on June 22/23, but 
almost no more Bootids in the following night:

Observing Time (UT)		t_eff	Camera	Obs.	# Meteors
----------------------------------------------------------------------
06/22 20:19 - 06/23 02:11	5.9h	MINCAM1	MOLSI	2 JBO	 7 SPO
06/22 21:04 - 06/23 01:45	5.7h	KAYAK1	SLAST	4 JBO	14 SPO
06/22 21:39 - 06/23 01:51	4.2h	AKM1	MOLSI	3 JBO	14 SPO
06/23 00:15 - 06/23 01:15	1.0h	MINCAM2	STRJO	2 JBO	 1 SPO

06/23 20:37 - 06/24 02:11	5.6h	MINCAM1	MOLSI	1 JBO	14 SPO
06/23 21:27 - 06/24 01:51	4.4h	AKM1	MOLSI	1 JBO	20 SPO
06/23 21:47 - 06/23 22:45	1.0h	KAYAK1	SLAST	0 JBO	 3 SPO
----------------------------------------------------------------------

Hence, maximum activity occured on June 22/23. Remarkable is the fact, that 
the Bootids were not evenly distributed in time, but that there was enhanced 
activity between 23:50 and 00:30 UT. Seven of the overall eleven June Bootids 
were recorded in that short time interval:

Observing Time (UT)		# Meteors
----------------------------------------------
06/22 20:30 - 06/22 21:00	0 JBO	 3 SPO
06/22 21:00 - 06/22 21:30	0 JBO	 2 SPO
06/22 21:30 - 06/22 22:00	0 JBO	 2 SPO
06/22 22:00 - 06/22 22:30	1 JBO	 2 SPO
06/22 22:30 - 06/22 23:00	0 JBO	 3 SPO
06/22 23:00 - 06/22 23:30	1 JBO	 4 SPO
06/22 23:30 - 06/23 00:00	2 JBO	 8 SPO
06/23 00:00 - 06/23 00:30	6 JBO	 2 SPO
06/23 00:30 - 06/23 01:00	0 JBO	 2 SPO
06/23 01:00 - 06/23 01:30	1 JBO	 8 SPO
----------------------------------------------

A first IMO analysis of visual observations showed increased rates starting
in the evening of June 22, whereas the maximum was reached at mid-day of
June 23 with ZHRs up to 50. A peak at the above mentioned time was (not yet)
confirmed. Anyway, both observations are another excellent proof of the power
of dust trail modelling. 

Otherwise, June was a dull month. Due to the mediocre weather and short nights,
the effective observing time decreased to a low of little above 300 hours.
On the other hand, meteor activity slightly increased in comparison to May, 
such that the overall meteor count improved somewhat. It's a god sign for the
end of the annual "dry period" for meteor observers.


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

Code    Name        Place           Camera         FOV    LM Nights Time Meteors
--------------------------------------------------------------------------------
EVAST Evans       Moreton       RF1 (1.2/12)      20 dg  4 mag   3   10.1 h   31
KACJA Kac         Kostanjevec   METKA (0.8/8)     42 dg  2 mag   8   43.0 h   43
MOLSI Molau       Seysdorf      AKM1 (0.85/25)    32 dg  6 mag  16   57.6 h  148
                                MINCAM1 (1.4/12)  35 dg  4 mag  18   72.2 h  101
SLAST Slavec      Ljubljana     KAYAK1 (1.8/28)   50 dg  4 mag  17   66.1 h  156
STRJO Strunk      Leopoldshoehe MINCAM2 (0.8/8)   42 dg  4 mag  19   43.9 h  105
                                MINCAM3 (0.8/6)   55 dg  3 mag   4    8.1 h   19
UEBST Ueberschaer Aachen        MIMO (0.95/25)    13 dg  4 mag   5   20.1 h   17
--------------------------------------------------------------------------------
Sum                                                             27  321.1 h  620


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

June   01   02   03   04   05   06   07   08   09   10   11   12   13   14   15
--------------------------------------------------------------------------------
EVAST   -    -    -    -    -   3.4   -    -    -    -    -    -    -    -    -
KACJA   -    -    -    -    -   5.2  5.1  5.4   -    -    -    -    -   5.9  5.8
MOLSI   -    -    -    -    -   5.3  5.4  5.3  2.5   -    -    -   3.2  1.7   - 
        -    -    -    -    -   6.3  5.7  6.0  1.0   -    -    -   3.5  2.5   -
SLAST  4.6  3.4   -    -    -   5.8  4.7  4.9  4.0  2.9   -    -    -   2.6   -
STRJO  4.2  3.1  1.7   -   3.9  3.9  3.1  0.5   -    -   3.7   -   2.3  2.1  0.5
        -    -    -    -    -    -   2.4   -    -    -    -    -    -   3.4   -
UEBST  3.9   -    -    -    -   3.9   -   3.8   -    -    -    -    -    -    -
--------------------------------------------------------------------------------
Sum   12.7  6.5  1.7   -   3.9 33.8 26.4 25.9  7.5  2.9  3.7   -   9.0 18.2  6.3

June   16   17   18   19   20   21   22   23   24   25   26   27   28   29   30
--------------------------------------------------------------------------------
EVAST   -    -   3.1   -    -    -    -    -    -    -    -   3.6   -    -    -
KACJA   -    -    -    -    -    -    -    -    -   3.4  6.1   -    -   6.1   -
MOLSI  5.0  1.8   -    -   3.2   -   4.2  4.4  4.2  1.7   -    -   5.4  2.9  1.4
       5.7  1.6  1.9   -   5.9   -   5.9  5.6  2.9  2.1   -   2.7  5.1  5.9  1.9
SLAST   -   3.6  3.8   -    -    -   4.7  2.2  2.2   -   4.2  3.5   -   4.7  4.3
STRJO   -   3.6   -   1.5   -    -   1.0   -   3.6  0.5   -   0.8  2.6  1.3   - 
        -    -    -    -    -    -    -    -    -   1.8   -    -    -   0.5   -
UEBST   -    -    -    -    -    -    -    -    -    -    -   3.8  4.7   -    -
--------------------------------------------------------------------------------
Sum   10.7 10.6  8.8  1.5  9.1   -  15.8 12.2 12.9  9.5 10.3 14.4 17.8 21.4  7.6


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

June   01   02   03   04   05   06   07   08   09   10   11   12   13   14   15
--------------------------------------------------------------------------------
EVAST   -    -    -    -    -   11    -    -    -    -    -    -    -    -    -
KACJA   -    -    -    -    -    7    9    9    -    -    -    -    -    5    4
MOLSI   -    -    -    -    -   15   12    9    6    -    -    -    1    5    -
        -    -    -    -    -    7   11   13    1    -    -    -    3    4    -
SLAST   3    7    -    -    -   16    9   20    3    2    -    -    -    5    -
STRJO   5    4    3    -    8    8    5    1    -    -    7    -   10    4    1
        -    -    -    -    -    -    4    -    -    -    -    -    -   11    -
UEBST   1    -    -    -    -    1    -    2    -    -    -    -    -    -    -
--------------------------------------------------------------------------------
Sum     9   11    3    -    8   65   50   54   10    2    7    -   14   34    5

June   16   17   18   19   20   21   22   23   24   25   26   27   28   29   30
--------------------------------------------------------------------------------
EVAST   -    -    7    -    -    -    -    -    -    -    -   13    -    -    -
KACJA   -    -    -    -    -    -    -    -    -    1    5    -    -    3    -
MOLSI  14    3    -    -    4    -   17   21   12    3    -    -   13    8    5
        7    1    3    -    4    -    9   15    4    2    -    2    3    8    4
SLAST   -   10    8    -    -    -   22    3    4    -   14    5    -    6   19
STRJO   -   10    -    5    -    -    3    -   10    2    -    2   11    6    -
        -    -    -    -    -    -    -    -    -    3    -    -    -    1    -
UEBST   -    -    -    -    -    -    -    -    -    -    -    8    5    -    -
--------------------------------------------------------------------------------
Sum    21   24   18    5    8    -   51   39   30   11   19   30   32   32   28

Sirko Molau, 2004/07/14