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(meteorobs) IMO-NEWS Re: small outburst on September 7/8 1996?


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Date: Sat, 2 Nov 1996 18:50:02 +0100 (MET)
To: Casper ter Kuile <pegasoft@cc.ruudot nl>
From: Christian Steyaert <steyaert@vvs.innetdot be>
Subject: Re: small outburst on September 7/8 1996?
Cc: imo-news@tu-chemnitzdot de, zenit@astro.rugdot nl, mathlenr@fys.ruudot nl

 Hi Casper,

 You asked:

>We are very interested to learn if anyone can CONFIRM the event, either
>from visual or radio observers. Due to the high velocity of the meteors and
>relatively low numbers, the event might not be suitable for radio detection
>however.

I believe the radio observations of Maurice De Meyere can confirm this=
 event.
See the details below, extract from RMOB9609.TXT
However, these radio observations indicate enhanced activity between 0h UT
and 3h UT. Did the visual observers stop at 0h25m UT, or wasn't there any
worth noting activity later? If interesting, we can also look in the details
(15 minute intervals e.g.).


Curious about the sequel,

   Chris


- --
Radio Meteor Observation Bulletin No. 38                  October 1996


1. FORWARD SCATTER METEOR OBSERVATIONS

Observer: Maurice De Meyere
Location: Deurle, Belgium  (3 37' E, 51 00' N)
Frequency: 66.51 MHz
Transmitter locations (all stations of more than 10 kW):
   66.35 MHz, Klaipeda, Lithuania  12 kW, 05h00-22h00
   66.41      Siedlce   Poland     39     04h57(Sun05h57)-02h00(Sat03h00)
   66.47      Viesintos Lithuania  12     05h00-22h00
   66.50      Sofia     Bulgaria   10     24hrs
   66.56      Poznan    Poland     56     04h57(Sun05h57)-02h00(Sat03h00)
   66.62      Budapest  Hungary   100     24hrs
   66.68      Valmiera  Latvia     20     06h00-22h00
Antenna: crossed Yagi, 4 elements, astronomical azimuth 270 o (=3D East),
         elevation 27 o
         Antenna amplifier: 25 dB  max level  90 dBmuV
Receiver: commercial, Progresson 447A, TESLA (Bratislava)
         The receiver was calibrated with a Marconi TF2008 signal
         generator. Sensitivity: 5 muV (modulation frequency
         1000 Hz, frequency sweep 38 kHz) at (S+N)/N =3D 20 dB

Observing method: automated setup, 150 samples/second,  8 bit resolution.
         [Time and details of all individual meteor reflections are stored
         on file in the University of Ghent format  (Prometeos), and are
         available for further analysis. Reduction software for DOS and
         Windows available].

                            September 1996

   Raw counts of reflections with a duration of at least 0.027 s
   during one hour interval starting at UT:


   Sept |   UT
   1996 |   20h  21   22   23   00   01   02   03   04   05   06
  ------+-------------------------------------------------------
   1- 2 |    9    5   11   23   19   21   13   46   31   29   35
   2- 3 |    4    5   11   18   20   20   19   14   17   10   21
   3- 4 |    7   13   12   21   31   25   45   48   38   42   41
   4- 5 |
   5- 6 |
   6- 7 |    2    5    8   14   17   26   20   14   19   22   10
   7- 8 |    4   13   10   25   55   54   54   36   29   16   21
   8- 9 |    1    6   17   16   19   28   37   28   35   23   18


- ---
Dutch observer Koen Miskotte (Ermelo, 52 deg. 18' N, 5 deg. 37' E) observed
something which might have been the descending slope of a small meteor
outburst on September 7/8 1996. In only 47 minutes effective observing time
with a limiting magnitude near +6.3, he observed 13 meteors, of which 8
came from a sharp radiant at RA 4h10m, dec. +47 (1950.0), close to mu
Persei. The meteors had a Perseid-like velocity and were clustered in the
early part of the observational interval.


Below the observational data. The observations have been reduced with a
population index of 2.5 and gamma =3D1.4 in radiant altitude dilution.
Miskotte has a Cp of 1.2.


- -Marco Langbroek and Koen Miskotte
Observational team 'Delphinus'
Dutch Meteor Society (DMS), the Netherlands



Observational data. Observer Koen Miskotte, Ermelo, the Netherlands (52
deg. 18' N, 5 deg. 37' E). Date: September 7/8, 1996

UT                Teff  Lm    Nstream     Nspo  Hrad        ZHR

23:35-23:48       0.20  6.3   4           0     44 deg.     33.3 +- 16.7
23:48-00:00       0.20  6.3   2           1     46 deg.     15.9 +- 11.2
00:00-00:25       0.38  6.2   2           4     49 deg.     8.6 +- 6.1

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| V.V.S. Astronomical Association                                        |
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