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(meteorobs) Radio Meteor Obs. Bull. Oct 199
Radio Meteor Observation Bulletin No. 75 November 1999
1. FORWARD SCATTER METEOR OBSERVATIONS
Observer: Enric Fraile Algeciras
Location: Paseo Bonanova, 8 Barcelona (02 07'E, 41 24' N)
Frequency: 48.24715 MHz.
Transmitter Location: still working to identify, possibly South German C2,
100 kW, horizontal polarisation)
Antenna: 6-element Yagi 617-6B, 14 dBd gain.
astronomical azimuth 215 deg (=NE), elevation 0 deg.
Antenna: Six element Yagi 617-6B, 14 dBi gain, horizontal polariz.
Azimuth 200 deg (NE), elevation 20 deg
Receiver: home made converter 20 dB gain, 1 dB noise and Kenwood TS-830S.
10 dB attenuator in the receiver to reduce direct reception
Sensitivity: 0.25 uV for 10 dB S/N
Observing method: the audio signal of the video carrier is received using
a narrow CW filter (500 Hz) and fed into the PC in real time.
Data sampling system: using a super 14 bits A/D card to PC/XT
and "Data Capture" software with 1 second/18 sampling interval
to store all the > 0.5 s reflections.
| Oct 1999
UT | 9 10 11 12 13 14 22 23 24 25 28 29 30 31
----+---------------------------------------------------------
0h| 1 48 2 29 1 9 4 42 66 3 5
1 | 2 1 3 3 6 4 3 8 1 22 2 2
2 | 2 5 4 14 7 2 1 23 3 4
3 | 42 2 4 6 11 16 1 0
4 | 1 4 3 8 1 2 1 28 1
5 | 3 1 5 1 1 1 22 2 0
6 | 4 2 9 2 1 23 5 32
7 | 9 1 3 1 3 44 12 33
8 | 4 10 6 1 33 13 35
9 | 9 13 1 3 26 4 1 23 4 12
10 | 2 22 1 1 4 23 7 7 1 6 1 25
11 | 1 2 3 2 18 46 43 15 52 2 49
12 | 1 24 20 44 3 21 1 56 1 10
13 | 7 42 74 20 32 1 38 89 2 8
14 | 3 4 35 49 46 30 1 9 29 1 58 2 5
15 | 2 5 10 49 19 13 16 35 1 29
16 | 48 28 21 17 1 16 11 31 2 8
17 | 5 19 34 16 1 30 3 49 6 11
18 | 8 43 24 4 62 7 22 8 14
19 | 46 15 18 14 5 5 1 28 7 16
20 | 3 3 10 9 13 7 9 1 10 2 26 10 11
21 | 3 20 2 54 4 3 3 19 2 43 14 9 3
22 | 1 4 2 4 34 5 6 2 5 1 33 4 21 16
23 | 2 5 29 4 33 6 4 3 21 35 5 11 3
----+---------------------------------------------------------
UT | 9 10 11 12 13 14 22 23 24 25 28 29 30 31
| Oct 1999
Note:
. apparently, the data capture software doesn't work well.
As for September, please use the above counts with reservations.
I'm testing the MCT5X and Meteor 2.0 software to supply my actual software
for the future.
Enric Fraile Algeciras
---------------------------------------------------------------------------
Observer: Michael Boschat
Location: Halifax, Canada (63 36'W, 44 39'N, 58 meters above sea level)
Listening Frequency: 83.25 MHz
Receiver: Icom R-10
Antenna : resonant dipole
Antenna Direction: Horizontally polarized with lobes in E-W plane, elev 0 deg
Filter : high-Q (Q at least 300) bandpass filter between antenna & receiver.
Listening Mode: AM
Recording method: listening by ear
October 1999
Number of meteors heard in one hour interval
| Oct 1999
UT | 1 2 4 5 9 10 18 20 21 22 23 24 25 27 28 29
----+------------------------------------------------------
9h| - - - - - 19 - - - - - - 9 - - -
10 | - - - - - 9 - - - - - - 19 - - -
11 | - 8 - 1 - 3 32 - - 3 - - 5 8 - -
12 | - 29 - 7 - - 79 - 8 2 7 - 5 28 - -
13 | - - - 7 - - 47 - 4 - 17 11 - 7 - -
14 | - - - 2 - - 41 - 4 - 9 29 - 8 - -
15 | - - - - - - 39 - 4 - - 18 - - - -
16 | - - - - - - 23 - 6 1 - 35 - - - 20
17 | - - - - - - 18 - - - - 18 - - - -
18 | - - - - - - - - 6 - - 12 - - - -
19 | - - - - - - - - 3 - - - - - - -
20 | - - - - - - - - 2 - - - - - - -
21 | - - - - - - - - - - - - - - - -
22 | - - - - - - - - - - - - - - - -
23 | - - - - - - - - - - - - - - - -
0 | - - - - - - - - - - - - - - - -
1 | - - - - - - - - - - - - - - - -
2 | - - 9 - - - - 8 - - - - - - 7 -
3 | - - - - - - - 3 - - - - - - - -
4 | - - - - - - - - - - - - - - - -
5 | - - - - - - - - - - - - - - - -
6 | - - - - 5 - - - - - - - - - - -
7 | - - - - 12 - - - - - - - - - - -
8 | 5 - - - 5 - - - - - - - - - - -
----+------------------------------------------------------
UT | 1 2 4 5 9 10 18 20 21 22 23 24 25 27 28 29
| Oct 1999
Notes:
. no corrections for radiant position made to the counts.
. ( - ) means no observations made.
. * = Interference.
. + = 1/2 hour observation only.
Mike Boschat
---------------------------------------------------------------------------
Observer : Eisse Pieter (Peter) Bus
Location : Groningen, Netherlands (6 deg 33' E, 53 deg 13' N)
Frequency : 72.11 MHz
Transmitter
Location : Wroclaw, Poland, 130 kW, distance 740 km
Antenna : Yagi, 3 elements, geographical azimuth 106 degrees (ESE),
elevation 13 degrees.
Receiver : Bearcat UBC 860 XLT Scanning radio, sensitivity 0.5 uV.
Observation Method: Listening and counting in 5-minute intervals.
Mean "sporadic" activity on September 26 and 2, 4, 5 and 9 October 1999
per 30-minute intervals. Between brackets one-sigma errors (n-1).
Hourly rates starting at UT:
16h00m 16h30m 17h00m 17h30m 18h00m 18h30m 19h00m 19h30m 20h00m 20h30m
______________________________________________________________________
66(8) 64(8) 66(8) 70(9) 75(8) 77(10) 75(14) 78(6) 76(5) 78(3)
Total uncorrected hour rates of all reflections on October 8 per
30-minute intervals.
Hour rates starting at UT:
16h00m 16h30m 17h00m 17h30m 18h00m 18h30m 19h00m 19h30m 20h00m 20h30m
_____________________________________________________________________
69 66 63 67 78 81 75 73 85 97
Mean "sporadic" activity of long-lasting reflections > 1 second on
September 26 and 2, 4, 5 and 9 October 1999 per 30-minute intervals.
Between brackets one-sigma errors (n-1).
Hour rates starting at UT:
16h00m 16h30m 17h00m 17h30m 18h00m 18h30m 19h00m 19h30m 20h00m 20h30m
______________________________________________________________________
8(3) 8(3) 8(3) 9(2) 9(3) 8(2) 8(2) 7(2) 7(2) 9(2)
Uncorrected hour rates of long-lasting reflections > 1 second on
October 8 per 30-minute intervals.
Hour rates starting at UT:
16h00m 16h30m 17h00m 17h30m 18h00m 18h30m 19h00m 19h30m 20h00m 20h30m
_____________________________________________________________________
12 20 14 16 22 22 16 14 16 12
Notes:
. it seems plausible that low-level activity of the Giacobinids/Draconids
is observed by forward scattering of radio waves in the period 16h-21h UT
on October 8, 1999.
. the total number of reflections gives no indication of any shower activity.
Only the long-lasting reflections > 1 second on October 8 in the period
16h-21h UT rose significantly above back-ground level.
. the duration of the long-lasting reflections was in the order of 1-3 second,
almost equal to the outburst in 1998. Reflections lasting longer than 7
seconds were very rare.
. maximum activity of the long-lasting reflections occurred at approximately
19h UT around Solar Longitude 195°.06 (J2000) almost at the
same solar longitude as observed for the outburst in 1998 (195°.075).
Peter Bus
---------------------------------------------------------------------
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
66.47 Viesintos Lithuania 12 05h00-22h00
66.62 Budapest Hungary 100 24hrs
66.68 Valmiera Latvia 20 04h30-22h00
Antenna: crossed Yagi (x form), 4 elements, astronomical azimuth 270 deg
(= E), elevation 27 deg.
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 = 20 dB.
SWR of antenna alone at 66.5 MHz: 1.4/1 (good to very good),
measured with MFJ/259P SWR analyzer (HF-VHF 1.8 MHz to 170 MHz)
on Sep 28, 1998.
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].
October 1999
Raw counts of reflections with a duration of at least 0.027 s
during one hour interval starting at UT:
Oct | UT
1999 | 20h 21 22 23 00 01 02 03 04 05 06 07
------+------------------------------------------------------------
2- 3 | 30 31 49 66 92 77 82 129 150 168 ?
3- 4 | 17 47 54 81 77 109 66 93 144 138 92
4- 5 | 22 82 40 82 56 61 109 131 137 144 ?
5- 6 | 30 46 65 64 73 97 142 144 205 178 120
6- 7 | 16 59 59 72 83 85 115 143 161 145 128
7- 8 |
8- 9 | 29 27 52 50 89 80 113 141 126 75 126
9-10 | 43 87 77 80 85 91 127 106 102 118
10-11 | 58 ? 56 89 91 77 113 116 119 143 131
11-12 | 71 89 96 95 89 105 134 144 153 186 133
12-13 | 47 41 81 84 106 96 165 174 160 147 164
13-14 | 57 ? 75 ? 82 102 ? 182 172 ? ?
14-15 |
15-16 | 51 ? 79 97 74 121 148 197 114 174 106
16-17 | ? 72 64 89 100 127 130 174 154 ? ?
17-18 | 35 61 108 102 97 84 136 197 161 158 95
18-19 | 20 62 77 90 91 130 223? 194 211 223 160
19-20 | 23 53 95 87 104 98 178 179 206 161 138
20-21 | 28 55 90 81 118 147 241 234 237 294 174
21-22 | 46 70 97 103 128 193 223 277 260 332 141
22-23 | 62 90 87 83 204 140 177 263 167 291 ?
23-24 | 42 98 102 92 115 116 195 237 201 247 188
24-25 | 39 90 84 111 121 142 184 187 253 172 67
25-26 | 65 81 82 132 94 127 192 182 182 203 133
26-27 | 66 101? 92 121 123 130 ? 199 188 192 135
27-28 | ? ? ? 95 119 120 140 147 148 ? ?
28-29 | 74 87 146 117 139 146 169 160 141 173 180
29-30 | 96 98 81 88 126 103 129 146 140 ? ?
30-31 | 53 81 94 92 99 108 100 125 171 160 142 111
31-01 | 73 93 93 105 105 104 173 124 146 156 -
------+------------------------------------------------------------
1999 | 20h 21 22 23 00 01 02 03 04 05 06 07
Oct | UT
Raw counts of reflections with a duration of at least 1.000 s
during one hour interval starting at UT:
Oct | UT
1999 | 20h 21 22 23 00 01 02 03 04 05 06 07
------+-------------------------------------------------------------
2- 3 | 6 2 1 5 13 5 10 17 23 24 ?
3- 4 | 3 10* 4 7 14 17 5 7 17 20 21*
4- 5 | 6* 19* 2 13 12* 6 13 17 20 24 34
5- 6 | 2 7 9 4 3 11 12 21 31 ? 24
6- 7 | 2 6 7 8 5 8 11 17 19 25 38*
7- 8 |
8- 9 | 2 2 5 6 6 5 11 15 15 8 26*
9-10 | 2 16 10 8 14 7 13 14 20 19
10-11 | 14* 33* 14* 15 5 10 10 15 7 23 21
11-12 | 8 7 9 18 6 13 18 19 16 33 18
12-13 | 3 6 6 8 14 9 15 20 18 23 44*
13-14 | 15* 29* 10 ? 14 5 19 19 25 ? ?
14-15 |
15-16 | 6 34* 13 22* 10 16 14 31 14 40* 15
16-17 | ? 10 10 9 14 9 17 27 17 ? ?
17-18 | 10 6 16 14 10 7 23 25 12 27 20*
18-19 | 0 5 10 21* 9 9 ? 20 33 54* 48*
19-20 | 2 6 6 11 11 12 20 27 26 25 31*
20-21 | 5 10 22* 7 20 31* 50* 29 32 47 38*
21-22 | 3 8 19 7 15 21 25 66* 38 63 14
22-23 | 12 15 12 14 48* 20 19 38 16 105? ?
23-24 | 5 15 12 0 8 8 14 33 20 29 35
24-25 | 5 9 8 14 6 17 20 26 28 20 15*
25-26 | 13 7 8 14 9 16 24 13 18 29 22
26-27 | 10 10 10 24 12 13 48* 31 28 43* 36*
27-28 | ? ? ? 29* 8 8 21 10 16 41 36*
28-29 | 10 11 36* 18 ? 19 22 24 12 29 45*
29-30 | 12 12 9 18* 15 15 13 19 15 ? ?
30-31 | 4 8 18 12 13 10 7 15 25 15 26 19
31-01 | 14 12 19* 23* 9 11 25 15 33* ? -
------+-------------------------------------------------------------
1999 | 20h 21 22 23 00 01 02 03 04 05 06 07
Oct | UT
Notes:
. ? probably affected by sporadic-E, tropo, direct reception.
. * warning for relative high number of long duration reflections,
an indication for potential stream activity.
. local time = UT + 2 hours
. change to winter hour on Oct 31, 2h UT (local time = UT + 1 hour)
Maurice De Meyere
----------------------------------------------------------------------
Location: Astronomical Observatory, University of Ghent, Belgium
(ED50 coordinates: 3 42' 32" E, 51 01' 25" N)
Antenna (2x): 4 elements horizontal Yagi, pointed East, elevation= 20 deg
Antenna amplifier: 10 dB gain
narrow band resonance lambda/4 antenna filter
Frequency: (1)=66.29 MHz (signal) and (2)=65.3 MHz (interference control)
Receiver (2x): modified commercial FM receiver
Data acquisition: 12 bits PC-based A/D convertor, 250 Hz sampling rate
Interference rejection:
dual setup: receiver (1) tuned at distant transmitter, receiver (2)
tuned at empty frequency. Anti-coincidence measurement rejects
registration of broadbanded spurious signals (lightning, computers,
ignition motors, etc).
Further information:
see WWW page (additional info + observational data)
http://allserv.rug.acdot be/~hdejongh/astro/meteor/meteor.html
Data format:
results are shown as total reflection time, expressed as
a percentage. The actual number shows 10 times this value.
When no figure is shown, the equipment was either out of service,
or results could have been affected by interference, sporadic-E.
-------------------------------------------------------------
| Oct 1999 | 10x % reflec. time | horiz: day | vert: time UT|
----------------------------------------------------------------
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
---+------------------------------------------------------------
0 | 52 36 59 69 63 42 37 51 54 74 47 52 39 68 40
1 | 57 41 48 62 59 90 60 47 55 68 62 48 43 40 34
2 | 75 72 97 76 60 74 50 55 112 56 64 75 74 72 23
3 | 87 94 102 95 99 78 79 56 120 97 103 95 63 115 75
4 | 89 117 122 84 92 135 87 63 102 87 94 107 50 93 37
5 | 101 117 137 146 100 98 71 77 116 69 145 137 66 114 76
6 | 109 135 111 87 75 119 80 54 97 95 95 93 62 95 75
7 | 78 81 152 92 130 77 50 88 105 90 78 93 43 66 49
8 | 116 104 150 86 70 44 64 40 86 55 56 57 48 62
9 | 73 89 107 67 70 71 29 65 83 60 40 51 44 50 89
10 | 65 73 96 86 54 73 57 57 39 52 42 44 42 39
11 | 65 66 77 68 59 45 63 45 63 26 34 38 33 30 47
12 | 52 59 66 32 33 58 24 47 48 43 23 23 21 26 22
13 | 47 49 50 39 49 36 10 21 20 25 16 38 21 21 28
14 | 32 37 42 24 27 10 24 38 34 51 12 18 12 30 58
15 | 28 35 21 21 29 18 39 16 21 35 32 18 16 33 15
16 | 34 27 24 13 18 17 19 19 14 14 29 14 18 34 18
17 | 20 26 19 18 27 19 21 22 19 22 19 17 17 21
18 | 24 25 41 16 33 29 19 27 26 25 26 23 23 25 25
19 | 47 37 44 31 33 31 29 44 40 35 26 36 37 23 45
20 | 43 48 80 41 34 43 46 47 46 42 38 47 48 36 56
21 | 27 37 53 55 37 44 46 56 38 78 49 44 53 33 46
22 | 15 33 47 76 39 33 36 42 31 42 35 24 29 28 29
23 | 28 40 33 43 41 32 56 39 38 41 45 33 33 29 41
---+------------------------------------------------------------
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
----------------------------------------------------------------
| Oct 1999 | 10x % reflec. time | horiz: day | vert: time in UT|
--------------------------------------------------------------------
| 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
---+----------------------------------------------------------------
0 | 52 51 48 54 45 57 43 99 83 78 42 43 42 72 53 50
1 | 52 54 53 72 45 61 67 98 70 89 84 58 73 69 79 45
2 | 58 44 69 101 85 90 71 123 147 123 87 109 59 81 83 44
3 | 134 84 113 114 80 100 134 187 158 157 127 104 71 117 103 57
4 | 73 80 79 81 68 135 118 153 156 114 102 81 69 77 79 120
5 | 95 49 75 90 78 155 110 115 103 191 113 82 105 69 51 92
6 | 56 48 82 82 47 163 41 97 116 105 104 66 109 120 61 87
7 | 71 48 34 72 41 105 100 89 116 129 75 61 96 75 110
8 | 76 53 23 49 80 100 37 67 46 58 41 66 72 82
9 | 50 118 14 41 32 89 93 94 81 52 60 39 77 42 57 75
10 | 44 60 21 44 41 35 26 61 50 29 55 55 34 86
11 | 42 38 54 58 22 27 49 62 68 36 32 53 29 27 62 78
12 | 32 50 54 27 22 14 31 64 48 31 38 32 35 17 40 47
13 | 24 31 44 19 43 18 26 33 70 40 35 25 26 45 43
14 | 19 55 23 16 14 8 35 26 63 32 68 33 29 19 36 25
15 | 52 17 21 12 8 9 20 19 47 24 20 13 31 33 32 15
16 | 14 24 23 18 16 11 30 22 34 24 21 21 18 23 28 31
17 | 23 20 21 14 17 16 20 23 35 25 17 25 17 21 21 45
18 | 19 27 38 29 25 14 32 28 31 26 23 15 38 25 25 44
19 | 32 30 36 21 25 20 43 47 47 35 52 27 32 28 32 54
20 | 31 54 34 37 36 26 52 47 57 66 35 31 39 45 43 57
21 | 29 47 73 48 43 35 54 47 66 51 41 29 45 31 40 67
22 | 45 47 39 63 46 26 60 42 46 51 30 19 37 46 47 54
23 | 36 38 60 27 48 30 65 47 55 31 39 24 48 44 39 41
---+----------------------------------------------------------------
| 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
Notes:
. rather quiet month regarding regarding interference
. good Orionids activity between Oct 23-25
Pierre De Groote
---------------------------------------------------------------------------
Observer: Werfried Kuneth
Location: Ferndorf, Austria (13 37' E, 46 45' N)
Antenna: 2 element Yagi, direction southeast, no elevation at 1 m height.
Receiver: IC-706 at 53.76065 MHz, CW-R mode, 500 Hz CW filter, fast AGC.
Transmitters: 1) 30 kW TV video carrier from Bari, Italy, distance 700 km,
direction south and 2) a 30 kW TV video carrier from Sicilia,
Italy, distance 900 km, south. The total echo power of both
transmitters is processed into same 40 Hz virtual
receiver channel.
Observing method: automatic setup using FFTDSP42t software by AF9Y to record
the audio signal. 20 channels of 2 Hz width are used for meteor
identification, another channel is used for automatic
interference rejection. Sampling interval: one 4096
point FFT every 0.5 seconds.
The monthly results showing the total reflective time are now also
available at http://www.qsldot net/oe8fnk this includes now also Es, FAI
and fireball statistics.
The meteor counts below are corrected for a full hour observing time. If
the recording duration is 20-40 minutes, a dot is shown after the value, to
show the reduced accuracy. Results for less than 20 min. observing time are
excluded.
Counts of reflections longer than 6.5 seconds, assumed
to be overdense.
| Oct 1999
UT| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
---+----------------------------------------------------------------
0| 3 5 6 3 2 3 2 1 1 0 4 0 0 3 0
1| 2 5 3 2 4 4 0 0 7 4 4 1 8 1 3
2| 0 4 1 6 4 3 2 0 2 3 7 1 1 1 4
3| 4 2 3 5 3 3 4 1 1 0 4 0 2 4 1
4| 4 2 4 9 14 2 4 6 1 3 4 2 0 2. 4
5| 7 3 11 5. 6 5 3 7 7. 5 5 6 4 7 1 6
6| 6 3 7 2 10 14. 6 7 3 2 5 9 9 6 1
7| 11 5 8 9 8 6 8 6 6 4 1 6 6 10 4 4
8| 12 6 7 8 12 12 6 11 7 5 7 3 6 8 2 9
9| 7 11. 8 1 9 8 7 14 3 5 1 2 4 3 6 4
10| 6 10 19 4 10 8 3 5 9 7 3 5 5. 6 4 3
11| 7 5 4 4 6 6 2 9 3 9 5 4 3 3 3 6
12| 0 6 4 3 6 5 3 3 3 4 1 2 4 4 0. 2
13| 0 0 0 2 2 3 3 1 5 1 2 2 3 0 5
14| 3 0 4 0 1 3 1 2 1 0 2 0. 0 1
15| 0 4 3 1 1 2 1 2. 0 0 1 2 1 1 1
16| 1 0 6 0 2 1 2 1 3 0 2 0 0 2
17| 1 0 1 0 1 0 0 3 0. 0 0 0 1 0 0
18| 1 0 1 0 7 0 1 1 0 2 1 1 1 2. 3
19| 0 1 1 2 2 3 0 0 2 0 0 0 1 1
20| 1 0 0 2 0 2 3 2 0 3 3 1 2 0 1 2
21| 4 3 1 3 7 3 0 1 2 0 2 2 4 2 0 2
22| 4 0 2 2 2 3 2 1 2 2 2 2 2 5 1 6
23| 6 1 2 3 2 3 0 1 1 1 3 2 3 2 3 3
---+----------------------------------------------------------------
UT| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
| Oct 1999
| Oct 1999
UT| 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
---+------------------------------------------------------------
0| 7 5 6 2 8 3 2 3 5 2 6 6 2 3
1| 8 1 2 1 6 6 5 14 4 6 6 8 1 4
2| 11 5 8 6 8 5 11 7 5 5 2 4 5 6
3| 4 2 4 6 8 9 8 5 5 2 5 6 12 2
4| 6 5 5 9 10 7 7 5 7 3 5 10 3 1
5| 6 6 10 8 12 9 13 12 10. 6 6 13 7 5
6| 5 4 8 3 11 19 4 12 9 6 5 6 7 3.
7| 3 8 8 2 6 3 12 4 8 6 7 4 6 4
8| 7 7 6 3 2 4 7 12 4 6 10 10 4
9| 6 5 6 3 6 3 6 13 7 6 2 4 4
10| 4 5 5 6 0 3. 3 3 2 4 4 5 7
11| 6 6 11 5 6 3 3 4 6 5 7 3 7 7
12| 7 3 5 7 2 1 5 8 4 1 4 1 2 1
13| 6 3 3 4 4 5 2 4 3 2 1 5 3 3
14| 2 4 1 1 3 4 1 0 4 3 1 2 3 1
15| 2 6 1 2 2 1 0 1 0 3 1 1 1 3
16| 1 4 1 1 0 0 1 0. 2 1 0 1 1 3
17| 1 2 0 1 7 0 1 0 2 1 2
18| 0 3 2 0 1 1 1 0 0 0. 2 0
19| 2 2 1 0 0 1 5. 0 3 1 0 0 0
20| 4 1 3 1 1 2 1 2. 0 3 11 0 2
21| 1 1 2 0 0 0 1 1 4 1 1 1
22| 0 2 6 2 3 2 0 3 4 2 4 3 0
23| 3 2 1 1 4 1 6 4 2 4 2 0 2
---+------------------------------------------------------------
UT| 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
| Oct 1999
Propagation overview for October 1999
E : sporadic-E or E-layer propagation
F : FAI (field aligned irregularity)
- : propagation only via meteor echoes.
(blank) : no data available
| Oct 1999
UT| 1 2 3 4 5 6 7 8 910111213141516171819202122232425262728293031
---+--------------------------------------------------------------
0| - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
1| - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
2| - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
3| - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
4| - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
5| - - - - - - - - - - - - - - - - E - - - - - - - - - - - - -
6| - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
7| - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
8| - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
9| - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
10| - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
11| - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
12| - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
13| - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
14| - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
15| - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
16| - - - - - - - - - - - - - - - - - - - - - - E - - - - - -
17| - - - - - - - - - - - - - - - - - - - - - E E - - - - -
18| - - - - - - - - - - - - - - E - - - - - - E E - - - - -
19| - - - - - - - - - - - - - - - E - - - - - - E - - - - - -
20| - - - - - - - - - - - - - - - - - - E - - - E - - - - - -
21| - - - - - - - - - - - - - - - - - F E - - - - - - - - - -
22| - - - - - - - - - - - - - - - - - F - - - - - - - - - - -
23| - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
---+--------------------------------------------------------------
UT| 1 2 3 4 5 6 7 8 910111213141516171819202122232425262728293031
| Oct 1999
Note:
. nothing special to report for October 1999, and no Draconids
outburst this year.
Werfried Kuneth
---------------------------------------------------------------------------
Observer: R.B. Minton
Location: Raton, NM (104 26' W, 36 54' N, 2000 m above sea level)
Frequency: 92.9 MHz
Transmitters: KTZA FM 100 kW, Artesia NM, dist 444 km, geogr azim 178 deg
KSPZ FM 53 kW, Color. Springs, dist 217 km, geogr azim 352 deg
KYBR FM ? kW, Espanola NM, dist 180 km, geogr azim 236 deg
???? FM ? kW, Juarez Mexico, dist 579 km, geogr azim 198 deg
KWFM FM 90 kW, Tucson AZ, dist 798 km, geogr azim 233 deg
Antenna: folded dipole, on 6.3 m high mast, oriented N-S
Receiver: Subaru 12 V DC car radio with digital tuning
Observing method: conditioned audio input in the game port of an IBM 386 SX-50
PC, 128 samples/second, DOS/Basic software, automatic
Total hourly counts
September 1999
Sep| UT
1999| 0h 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
----+------------------------------------------------------------------------
1 | 16 16 11 16 21 10 15 16 12 19 20 13 20 10 16 33 43 25 20 19 15 23 23 28
2 | 27 17 24 17 18 19 11 16 10 21 13 13 16 15 25 35 34 24 23 & & & & &
3 | & & 22 14 13 10 10 6 5 13 5 7 5 5 15 29 28 35 23 21 12 17 14 17
4 | 13 17 11 27 28 17 11 20 13 10 16 10 18 13 13 38 35 30 13 9 14 12 24 22
5 | 12 8 8 11 12 9 14 12 16 9 4 8 7 12 11 22 9 16 13 12 19 13 13 12
6 | 16 7 8 14 6 6 17 14 10 11 6 6 12 20 13 39 27 28 12 43 25 14 25 22
7 | 28 17 6 10 11 9 21 8 8 16 11 17 7 9 16 23 13 20 23 18 15 13 15 13
8 | 14 16 25 17 24 20 11 10 13 10 5 13 11 11 10 30 25 21 21 22 19 15 24 25
9 | 18 22 13 21 20 18 14 6 14 12 14 9 8 14 18 35 36 19 29 23 & & & &
10 | 19 12 17 24 21 16 16 21 9 15 19 16 15 11 21 32 28 15 6 14 17 32 42 42
11 | 66 9 11 23 13 11 11 7 8 5 21 5 13 16 12 34 33 36 21 16 18 21 24 24
12 | 38 20 13 15 12 9 14 12 9 10 9 8 13 14 13 24 22 14 12 13 19 16 26 15
13 | 12 19 12 21 13 16 9 13 8 9 15 8 10 14 11 24 24 26 16 23 14 14 20 16
14 | 18 22 24 & 20 11 8 12 7 19 17 14 13 13 13 39 23 27 12 45 & 21 17 14
15 | 10 15 9 21 13 9 16 6 14 6 5 5 5 7 10 15 8 7 8 7 6 11 & 20
16 | 9 12 3 5 4 2 4 6 4 6 6 9 5 9 12 28 21 19 8 32 34 15 10 16
17 | & & 21 7 12 5 6 12 3 13 14 8 10 19 18 25 24 17 & & & & 15 15
18 | 19 11 6 9 11 8 8 9 9 2 2 6 4 6 10 19 12 26 15 27 31 21 17 15
19 | 11 12 7 11 10 15 5 12 7 8 7 5 14 12 16 32 22 17 9 14 22 22 27 10
20 | 10 10 10 10 9 13 9 6 11 5 6 8 14 11 14 22 25 25 8 17 11 11 19 21
21 | 11 10 11 18 9 3 5 4 11 9 10 13 6 8 14 22 18 14 15 11 19 17 17 16
22 | 23 10 5 17 21 13 6 10 9 5 14 7 14 14 14 28 31 18 8 14 12 19 18 15
23 | 8 13 10 17 11 9 12 6 6 13 6 9 9 6 11 27 11 15 10 8 8 12 5 10
24 | 8 5 10 12 17 9 7 11 5 5 13 4 9 11 12 23 18 13 7 18 15 20 26 10
25 | 10 14 9 15 16 12 9 12 6 9 11 10 9 14 9 24 19 24 11 13 11 13 13 9
26 | 11 9 12 12 7 17 6 10 7 8 8 14 11 11 13 29 10 21 11 16 20 19 24 28
27 | 27 17 16 29 20 18 12 11 3 4 9 6 11 15 16 36 20 23 13 20 18 15 22 17
28 | 15 14 17 19 24 8 6 11 7 9 13 14 13 11 25 35 27 22 13 21 16 21 24 19
29 | 9 12 13 17 19 11 17 13 7 13 13 14 13 23 23 51 22 40 20 24 15 18 24 14
30 | 25 13 12 17 19 16 12 12 7 18 12 15 14 11 23 33 26 28 9 16 20 15 22 23
----+------------------------------------------------------------------------
1999| 0h 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
Sep| UT
Signal duration distribution for the above period
Duration (s) Number
< 0.1 3563
0.1 to 0.3 3024
0.3 to 1 2224
1 to 3 1663
3 to 10 1427
10 to 30 312
> 30 3
Note:
. lightning noise (&) on September 2, 9, 13, 14, 15, 16, 17.
R.B. Minton
---------------------------------------------------------------------------
Observer: Sadao Okamoto
Location: Damine Meteor Observatory, Japan (137.53 E, 35.07 N)
Transmitter: HAM beacon (JA9YDB) for RMO (50 W CW, 53.7500 MHz) by
JA9BOH Kimio Maegawa. No modulation except for identification.
Antenna: 2 element Cross Yagi 4 dBi aiming to Zenith. Omni-directional
in azimuth and elevation above 15 deg elevation.
Location: Fukui-NCT at Sabae city (136.2 E, 35.9 N)
At present time about 10 observers are listing for
Kimio Maegawa's 53.75 MHz beacon.
Receiver: IC575
Antenna: 2 element Yagi, pointed to the zenith.
Observing method: FFTDSP software, manual count.
Hourly echoes over 10 dB SNR
1999
Oct|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23JST
Oct|15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14
UT
---+--------------------------------------------------------------------------
1|27 39 52 46 58 54 69 69 55 n@27@35 47 34 23 15 25 15 14 12 28 30 38@25
2|31 35 41 49 48 52 67 75 36 31 31 45 45 31 18 29 n n 15 17 26 27 43 --
3|34 45 58 56 42 39 58 49 35 20 28 26 33 20 17 n n 6 n 5 22 32 28@30
4|27 24 49 64 53 41 40 47 n n n 17 15 16 16 15 14 21 13 15 22 25 22@25
5|34 40 40 44 46 35 62 61 42 27 30 31 28 36 17 18 18 15 14 12 37 37 28@47
6|16 41 50 38 48 58 61 41 52 26 29 26 27 20 n n n 9 15 18 30 31@25
7|30 36 43 52 33 52 56 53 47 43 23 35 27 22 e@13 n@14 17 18 23 24 31@29
8|33 37 59 52 44 45 44 52 32 30 30 22 31 26 12 8 16 14 16 25 16 34 35@30
9|31 42 44 49 60 47 39 53 23 30 22 29 29 e 14@12 n 12 22 40 33 35 33@44
10|21 45 56 56 55 48 45 51 34 28 22 23 17 21 e e 12 18 13 10 36 22 37@24
11|36 49 50 42 52 49 50 43 21 29 26 -- 26 23 15 18@12 20 14 17 24 34 31 --
12|26 41 47 48 48 51 59 51 29 29 18 13 n@14 12 16 14 17 18 16@20 42 29@36
13|33 63 57 67 44 55 52 42 45 36 25 27 26 27 n n n n n n e e 42@36
14|40 50 66 71 60 54 68 54 37 38 n n@22 19 12 n n 17 19 n 29 33 48@38
15|45 54 59 53 45 50 47 49 37 35 25 21@27 e e n n n n n n n 31@35
16|34 50 47 43 42 44 59 58 29@22 @7 e e n n n n n n n n 27 18 --
17| n 41 37 48 25 29 51 47 31 43@25 n e e@17 n n n@10 11 20 23 23@25
18|36 27 32 52 31 56 65 51 24 14@18@17 11 e e n n n 14 15 16 30 27@27
19|32 46 49 38 33 48 38 38 34 30 18 30 18 e n n 15 7 20 9 27 35 29@30
20|32 43 46 40 34 37 47 52 39 30@18 28 25 17 15 16@18 @7 14 7 19 25 28@25
21|31 38 54 48 38 45 59 62 43 44 20@13 n@15 n n 11 12 9 17 28 31 31@42
22|32 48 59 50 51 65 58 48 36 n n 27@22 e e n n 8 16 16 e 26 38@29
23|30 47 43 53 41 62 57 50 35 n n n e e n n n n 9 19 22 28 43
---+-------------------------------------------------------------------------
- Oct|15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13
14 UT Oct|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21
22 23JST 1999
Echoes with duration > 5 s
1999
Oct|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23JST
Oct|15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14
UT
---+--------------------------------------------------------------------------
1| 1 1 5 2 2 2 4 5 2 2 3 1 2 1 2 1
2| 1 2 1 1 2 5 5 3 3 2 2 4 6 1 2
3| 3 4 4 2 2 6 7 5 1 3 6 6 2 3
4| 1 3 1 1 3 6 6 6 1 1 1 1 2
5| 3 1 1 8 6 3 1 1 2 1 3 1 1 1 1 1 1 1
6| 2 1 1 2 3 6 2 5 3 1 1 1 1 2 1
7| 3 2 1 1 1 5 4 7 3 3 2 2 1 1 2 1
8| 2 2 1 4 3 2 4 1 1 2 2 2 1 1 2 1
9| 2 5 1 4 4 5 3 2 6 2 2 4 1
10| 1 2 4 5 4 5 3 3 3 1 1 3 1 1 4 1 2
11| 1 3 2 1 1 7 5 2 2 1 1 2 1 2 2 --
12| 2 6 1 1 4 1 1 3 2 1 1
13| 2 2 5 4 2 4 2 7 2 4 2 1 1 2 1 1 4
14| 3 2 3 9 5 2 4 3 1 1 2 1
15| 2 7 5 2 3 4 3 1 3 2 4 2
16| 1 2 2 1 2 2 3 1
17| 3 1 2 1 6 2 2 2 1 1 1 2
18| 4 2 1 6 3 5 8 2 1 4 1 2 1
19| 1 4 2 3 5 2 2 1 1 1 3 2 1 1 4 3
20| 3 4 4 2 6 1 6 4 2 1 1 1 1
21| 1 2 6 3 3 2 5 2 4 3 1 1 1
22| 4 3 4 3 3 12 3 3 2 2 1 4 4
23| 2 6 3 4 5 2 4 3 1 3
---+-------------------------------------------------------------------------
- Oct|15 16 17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13
14 UT Oct|00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21
22 23JST 1999
Daily rate of long echoes (T > 20 s)
1999
Oct 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
-----------------------------------------------------------------
Count 2 6 4 0 4 4 2 0 7 6 2 3 2 6 3
Oct 16 17 18 19 20 21 22 23
-------------------------------------
Count 1 4 3 1 2 4 6 5
Notes:
. short Giacobinids outburst was observed on Oct 9 from 9h UT to 12h UT.
in Japan both visually and by radio observation.
-: lost counts because of high noise level or machine failure.
@: hourly rate estimated by effective observation time less than 60 min.
n: contamination due to radio noise or interference.
e: contamination due to sporadic E opening.
f: no data available due to TX or RX failure.
JST = UT + 9 hours
Sadao Okamoto
---------------------------------------------------------------------------
Observer: Garfield Tsao (BM2EQB)
Location: LonTan Observatory
LonTan, TauYan, Taiwan R.O.C. (121 14'37" E, 24 52'54" N by GPS)
Frequency: 50.0169 MHz USB mode 3 kHz width.
Antenna : Comet made 50MHz Yagi HB 4 element (gain 10.3 dBi)
astronomical azimuth 225 deg (=NE), elevation 7 deg.
Transmitter: MIYAZAKI University Japan, USB mode, 50 W (24 hours),
distance about 1125 km from Lon Tan.
Receiver: Icon PCR-1000 computer controlled all band receiver
Sensitivity: 0.25 uV for 10 dB S/N for USB mode
Observing method: the beacon 880 Hz voice signal (by FFTDSP) is received
by a low frequency filter (880 Hz) and fed into the D/A converter
and computer in real time.
Data sampling system: using an 8 bits A/D card to PC/AT and Qbasic program
with 1/8 second sampling interval to store the> 1.0 s reflections.
September 1999
1999|00h01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23LT
Sep|16h17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15UT
----+-------------------------------------------------------------------------
4 | - - - - - - - - - - - - - - - - - 10 5 7 11 20 14 20
5 |30 15 7 6 7 21 24 40 26 21 15 14 6 12 E 4 - - - - - - - -
11 | - - - - - - - - - - - - - - 8 8 6 4 7 12 12 22 8 13
12 |17 21 15 17 19 26 20 13 23 19 23 17 14 8 10 - - - - - - - - -
18 | - - - - - - - - - - - - - - - - - - 9 13 9 16 18 13
19 |17 20 18 20 25 18 26 29 20 16 9 13 4 *9 12 - - - - - - - - -
24 | - - - - - - - - - - - - - - - - - - - - 5 8 7 7
25 | 3 13 7 9 13 12 17 12 11 7 11 5 5 8 4 2 2 3 3 4 6 8 8 9
26 | 8 7 9 6 11 12 6 6 4 3 - - - - - - - - - - - - - -
----+-------------------------------------------------------------------------
Sep|16h17 18 19 20 21 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15UT
1999|00h01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23LT
Notes:
. "E" mark= E layer propagation and E layer sporadic of reflection.
. echo lasting longer than 60 seconds on Sep 19, 5h35m UT
Garfield Tsao
---------------------------------------------------------------------------
Observer: Ilkka Yrjola
Location: Finland (26 35' E, 60 54' N)
Frequency: 88.8 MHz ?
Receiver: Salora SRP-22 modified, narrow band FM (B=15 kHz)?
detected signal level >-122 dBm.
FM detection, no pulse noise rejection required.
Antenna: 2-el. Yagi, G=4 dBd to SW, azimuth 45 deg (SW), polarisation H.
Data sampling system: threshold triggering, sampling rate 32 ms.
Computer logs total hourly elapsed reflection time, number of
triggers for the hour, the longest time the signal was
continuously above detection level for the hour.
Data on major showers available in the Compact MS-Soft format.
Software for viewing available from
www.saunalahti.fi/~oh5iy/radio50.zip (754 K).
alpha Aurigids 1999
Meteor counts in one hour intervals starting at:
UT | 31 Aug 1 Sep 2 Sep 3 Sep
----+----------------------------------
0 | 151 148 136
1 | 146 168 151
2 | 130 160 135
3 | 190 309 184
4 | 203 228 210
5 | 264 171 208
6 | 198 329 268 239
7 | 264 309 173
8 | 173 304 145
9 | 137 188 163 211
10 | 202 165 180 225
11 | 183 160 133 156
12 | 182 144 155 142
13 | 155 163 134 170
14 | 167 165 196 186
15 | 125 142 126 156
16 | 99 103 109 134
17 | 109 113
18 | 100 176 148
19 | 99 178 185
20 | 140 198 198
21 | 152 200 197
22 | 155 220
23 | 154 146
----+----------------------------------
UT | 31 Aug 1 Sep 2 Sep 3 Sep
. Aurora on 144 MHz on Aug 31, Tropo on 88 MHz on Sep 1-3.
Orionids 1999
Meteor counts in one hour intervals starting at:
UT | 18 Oct 19 Oct 20 Oct 21 Oct
----+----------------------------------
0 | 270 251 285 311
1 | 227 265 253 278
2 | 259 299 276 413
3 | 330 477 481 485
4 | 322 459 330 461
5 | 416 461 543
6 | 377 502 383 470
7 | 410 300 348 422
8 | 305 383 331 449
9 | 253 347 296 258
10 | 425 333 378 376
11 | 319 284 313 235
12 | 327 299 335 215
13 | 229 273 410 194
14 | 230 313 246
15 | 302 229 204 170
16 | 345 452 197 178
17 | 174 524 217 240
18 | 220 474 275 314
19 | 250 671 211 286
20 | 284 306 468
21 | 289 315 320
22 | 345 324 338
23 | 316 304 265 295
----+----------------------------------
UT | 18 Oct 19 Oct 20 Oct 21 Oct
Ilkka Yrjola
---------------------------------------------------------------------------
Observer: W.T. Zanstra
Location: Appingedam, Netherlands (6 51' E, 53 19' N)
Frequency: 72.110 MHz
Transmitter: Wroclaw, Poland (16 degr 43' E, 50 degr 52' N), distance 735 km
Antenna: 5 elements Yagi, elevation 12 degr, azimuth 110 degr (ESE)
Receiver: Bearcat UBC 177 XLT scanner, sensitivity 0.3 microVolt
Observing method: listening by headphone
Draconids including sporadic meteors
October 8, 1999
| n | spor | Fobs
UT | weak moderate strong > 5 s | weak moderate strong > 5 s | (%)
------+---------------------------------------------------------------------
16-17 | 18 7 0 1 | 9 6 1 0 | 0
17-18 | 5 7 0 0 | 9 6 1 0 | 0
18-19 | 7 10 1 0 | 10 6 1 0 | 0
19-20 | 11 13 2 0 | 12 7 1 0 | 0
20-21 | 19 12 4 0 | 13 8 2 0 | 8
21-22 | 19 8 2 0 | 14 9 2 0 | 36
The numbers (n) are hourly rates, corrected for reflection time and breaks,
and including sporadic meteors.
The sporadics (spor) were observed during several years since 1995.
The levels are adapted to recent counts of sporadic meteors.
Fobs is the Hines' observability function.
Draconid activity can be recognized by the increase of the moderate and
strong reflections, and the collapse of the weak reflections, even during
the interval of time when Fobs = 0.
Wim Zanstra
2. ABOUT THE RMOB
The RMOB is an independent initiative of some workers in the field of radio
meteor scatter observations and data reduction. It started in August 1993 in
order to spread rapidly the Perseid results via E-mail. Since then, it has
appeared monthly, and it has gradually been expanded. In regularly publishing
summaries of observations, potential radio observers are kept up to date of
existing installations, possibilities and limitations of radio meteor
observations. In the long run, there should be sufficient observing stations
to cover the whole globe, allowing to detect stream outbursts which may
remain unnoticed visually.
RMOB contains typically: summaries of recent observations, equipment data,
first results of stream activity by radio methods, relations between radio
and optical meteors, references to other publications in the field of meteor
astronomy and radio scatter techniques, announcements of meetings, short
questions and answers, non-commercial (second hand) sale of radio equipment,
available software.
Contributors are mentioned, and interested persons are asked to contact them
directly.
RMOB can be copied freely in unabridged and unmodified form. Extracts should
indicate the source (Radio Meteor Obs Bulletin, month and year).
If you want to subscribe (or un-subscribe) to the E-mail distribution list,
please send a message to C. Steyaert.
Those not having access to E-mail can obtain a printed copy free of charge
from J. Van Wassenhove (current or back-issues).
3. ANNOUNCEMENT: New radio-meteor detection software available
Dear Radio-Meteor observers,
I have just put up a web site describing R_Meteor which is an implementation
of the method described in the Feb 1999 issue of WGN for detecting meteors
by radio scatter but using a PC + soundcard instead of a dedicated digital
signal processor.
Meteors are detected and displayed on a PC using fast fourier transforms of the
audio signal recovered from a comms receiver tuned to an over-the horizon HF
broadcast transmitter.
Check http://sapp.telepac.pt/coaa/r_meteor.htm for more details.
The software can be freely downloaded. The context-sensitive help file
describes the method in full.
Regards
Bev
Bev and Jan Ewen-Smith
COAA, sitio do Poio, Mexilhoeira Grande 8500-149, Portugal
Tel 00 351 (0)82 471180 Fax 00 351 (0)82 471516
><> coaa@mail.telepac.pt www.ip.pt/coaa ><>
4. CONTRIBUTORS / USEFUL ADDRESSES
Enric Fraile Algeciras (EA3BTZ)
C/ Moianes 19-21 Esc. A 6º 1ª, E Barcelona
E-mail: EA3BTZ@mx3.redestb.es
http://www.redestb.es/personal/ea3btz (in Spanish)
Michael Boschat
6306 Cork St., Apt.512, Halifax, Nova Scotia, Canada
E-mail: andromed@atm.daldot ca
Eisse Pieter Bus
Groningen, Netherlands
E-mail: epbus@wxsdot nl
Maurice De Meyere (ON4NU)
Hullekensstraat 24, B-9831 Deurle, Belgium
tel: +32 (9) 282 35 26
E-mail: mauricedot demeyere@planetinternetdot be
University of Ghent, Astronomical Observatory
Krijgslaan 281(S9), B-9000 Gent, Belgium
E-mail contact: Paul@izar.rug.acdot be, Pierredot deGroote@rug.acdot be
Werfried Kuneth
Ferndorf, Austria
E-mail: kuneth@net4youdot net
http://www.qsldot net/oe8fnk
Alastair McBeath
IMO: International Meteor Organization
12A Prior's Walk, Morpeth, Northumberland, NE61 2RF, England, U.K.
E-mail: vice_president@imodot net
R.B. Minton
Astrometric Observatory
568 North First Street, Raton, NM 87740, USA
tel: +001 (505) 445 7009
Sadao Okamoto
E-mail: okamoto@jim.sugiyama-u.ac.jp
Chris Steyaert, VVS
Kruisven 66, B-2400 Mol, Belgium
tel: +32 (14) 31 51 04
E-mail: steyaert@vvsdot be
Compuserve: 72650,3513
Garfield Tsao (BM2EQB)
LonTan Observatory, LonTan, TauYan, Taiwan
E-mail: tsao5916@ms17.hinetdot net
http://www.geocities.com/Eureka/Office/1528 (in Chinese)
Jeroen Van Wassenhove, VVS
's Gravenstraat 66, B-9810 Nazareth, Belgium
tel: +32 (9) 385 61 09
E-mail: 100101.734@compuserve.com
Ilkka Yrjola
Jukolantie 16, FIN-45740 Kuusankoski, Finland
E-mail home: oh5iy@sci.fi
http://www.sci.fi/~oh5iy/
Call: OH5IY, packet radio: OH5IY@OH5RBG.#KVL.FIN.EU
W.T. Zanstra
Spijkerlaan 13, NL-9903 BB Appingedam, The Netherlands
tel: +31(0)596 625617
E-mail: wimzanstra@freemaildot nl
--
Christian Steyaert (RMOB9910) 7 November 1999
--
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