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RE: RE: (meteorobs) '98 Leonid rates



Here Kim, 	have the whole report :-)

NAMN METEOR REPORT

DATE 1997 NOV 16/17 (Leonids Peak)
Time (UT) Start 0615  End 0900
OBSERVER: Wayne T Hally (HALWA)
LOCATION: NJAA OBSERVATORY, HIGH BRIDGE, NJ USA
COORDINATES: 74d 53' 54" West   40d 40' 52" North
ELEVATION: 830 feet (253 Meters)

Recording Method
Tape Recorder
0 seconds per meteor

TIME CALCULATIONS

TOTAL TIME 2:45
Break Time 0:12 from 0630 to 0642
Dead  Time none
Net   Time 2:33
---------------
Teff 2.55 Hours

SKY OBSCURED
25 % from 0615 to 0630

OBSERVED SHOWERS
LEO 153d +22
TAU 062d +20

METEORS OBSERVED
Time Per    FOV   Teff  F   LM   LEO TAU SPO
0615-0630 160d+80 0.25 1.33 4.70  1   0   0
0642-0900 160d+80 2.30 1.00 4.98  24  3   2
--------------------------------------------
0615-0900 160d+80 2.55 1.04 4.93  25  3   2 

FOV is NNE@45...rather low due to full moon  

MAGNITUDE DISTRIBUTIONS
-------------------------
Mag -5  -4  -3  -2  -1  0  +1  +2  +3  +4  +5  Tot Mean
LEO  1   2   1   2   4  2   3   6   3   1   0  25  +0.0
TAU  0   0   0   0   0  0   0   3   0   0   0   3  +2
SPO  0   0   0   0   0  0   0   1   0   1   0   2  +3

LIMITING MAGNITUDE
------------------
LM Summary
Time LM
---------
0615 4.70
0645 4.90
0700 4.90
0730 4.90
0800 5.10
0830 5.10
0900 5.10
-----------
Mean LM 4.93

LM Data
Time Area Cnt LM
0615   3   6   4.7
0615  17   8   4.7
------------------
0645   3   7   4.9
0645  17   8   4.9
0645   4   5   4.9
------------------
0700   3   8   5.2
0700  17   8   5.0
0700  UMI  *   4.5
------------------
0730   3   8   5.2
0730  17   8   5.0
0730  UMI  *   4.5
------------------
0800   3   8   5.2
0800  19   3   5.1
0800  16   4   5.0
------------------
0830   3   8   5.2
0830  19   3   5.1
0830  16   4   5.0
------------------
0900   3   8   5.2
0900  19   3   5.1
0900  16   4   5.0
------------------

METEOR DATA
Num Time Mag Spd Train  Shwr Notes
#1  0621  -4  5   3.0   LEO  06:21:30 Fireball Time
---------------------------
#2  0649  -1  4   1.0   LEO
---------------------------
#3  0705  +4  4    -    LEO
#4  0707  -2  5   Wk    LEO
#5  0713   0  4   3.0   LEO
---------------------------
#6  0726  +2  2    -    TAU
#7  0729  +2  3    -    TAU   (STA)
---------------------------
#8  0732  +2  1    -    Spo
#9  0735  -1  5    -    LEO
#10 0739  +2  4    -    LEO
#11 0740  +1  4    -    LEO
#12 0740  -3  4   1.0   LEO
#13 0742  +2  5    -    LEO
#14 0744  +3  5    -    LEO
---------------------------
#15 0750  +2  5    -    LEO
#16 0752  +2  5    -    LEO
#17 0753  +4  2    -    Spo
---------------------------
#18 0803  +3  5    -    LEO
#19 0813  +3  5    -    LEO
#20 0813  -2  5   2.0   LEO
---------------------------
#21 0815  -1  5   3.5   LEO
#22 0816  +2  4   1.0   LEO
#23 0823  -1  3    -    LEO
#24 0825  -4  5   7.0   LEO   08:25:35 Fireball Time
#25 0827  +1  3    -    LEO
---------------------------
#26 0835  -5  3   5.0   LEO   08:35:01 FB Time. see note
#27 0838  +1  4    -    LEO
---------------------------
#28 0845  +2  4    -    LEO
#29 0852  +2  4    -    TAU
#30 0855   0  4    -    LEO
---------------------------
   
SESSION NOTES
1. I agonized over whether the first period (15 min) should be included
with the rest. Clouds and worst LM; however since it was a fireball, I
decided to provide that 0.25 Teff separate from the rest, as well as a
total for the entire night. Each data user can make their own
choice as to how to record. It is not separated in the magnitude 
distribution; only 1 -4 mag LEO occurred in that time.

2.Fireball plots are included; accuracy fair; plotted from verbal
descriptions of meteor path on tape recording.

3. FOV very low in altitude; trying to avoid moon.

4. Meteor #26; Very close to radiant, Very short (<2 deg),
train rapidly deflected by wind. No such deflection was observed 
for the other trains noted.

5. On the Meteor data, 15 minute periods are delineated by dashes.
2nd Period was 18 minutes, instead of 15. Each 15 minutes ran from
07:00:00 to 07:14:59, 07:15:00 to 07:29:59, etc...

6. Due to moon, could not resolve STA/NTA meteors (except as noted),
so just counted Taurids; radiant listed is between NTA/STA positions.

7. In LM data, * for area UMI means area 19 was not actually counted;
estimate was based on stars visible throughout Ursa Minor. Tough Moon!!

8. Supplement Below is for each appox 15 minute period.

9 Some additional details are available, enquire if you wish.

General Notes
-------------
1. All Times UT
2. Speed 1=very slow 2=slow 3=Medium 4=fast 5=very fast
3. Train is measured in seconds; Wk=Wake (<0.5sec)
4. Plot Accuracy 1=very accurate 2=medium 3=poor

LEONIDS SUPPLEMENT
------------------
Time Per   Teff   F    LM   LEO  Mean 
0615-0630  0.25  1.33  4.70  1  -4.0
0642-0700  0.30  1.00  4.90  1  -1.0
0700-0715  0.25  1.00  4.90  3  +0.7
0715-0730  0.25  1.00  4.90  0  ----
0730-0800  0.25  1.00  5.00  2  +2.0
0800-0815  0.25  1.00  5.10  3  +1.3
0815-0830  0.25  1.00  5.10  5  -0.6
0830-0845  0.25  1.00  5.10  2  -2.0
0845-0900  0.25  1.01  5.10  2  +1.0






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