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RE: RE: (meteorobs) '98 Leonid rates
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To: "'meteorobs@atmob.org'" <meteorobs@atmob.org>
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Subject: RE: RE: (meteorobs) '98 Leonid rates
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From: Wayne T Hally <meteors@eclipsedot net>
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Date: Sat, 20 Mar 2004 08:16:32 -0500
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Delivered-To: meteorobs-mhonarc2@galaxy.atmob.org
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Delivered-To: meteorobs@atmob.org
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Reply-To: meteorobs@atmob.org
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Sender: owner-meteorobs@atmob.org
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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