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(meteorobs) Lyrid Observations April 21/22-00
My first impulse upon arriving home this morning
was to just ignore what little data
I did accrue and record over my tape at the first opportunity.
Clouds became a nuisance to a large degree last night and there was a remarkable
lack of meteor activity, even given the washed out moonlit sky.
But realizing I did have two clear periods and LM's that (barely)
made it just over 5.0, I decided perhaps the observation was worth
using anyway.
The best of the Lyrids must have ended by the time
the radiant rose over North America as I saw only 5 Lyrids in 2.25 hours
of Teff, and just 5 sporadics. The second period had Hercules quite
high in the sky and I was expecting at least 5 or six Lyrids to appear,
but on two showed that hour. Even with the poor LM's that was quite
unexpected. The first period
saw only 3 Lyrids.
Clouds rolled in at around 6:20 UT, and pretty much
ruined the view, so I wound up making period one a bit longer than usual.
I took a ten minute break, and things cleared out nicely. By
6:30 UT I was observing again, but at 7:40, just into my planned third
period, the clouds rolled in and completely covered the sky. Ten
minutes later, it was clear again. I thought I might actually get
to observe with the radiant now nicely placed in the sky, but within another
ten minutes the sky was once again filled with puffy clouds. I gave
up and drove home at 4:00 local time.
I used the counting method for this observation.
I faced just a few degrees east of north.
***********************************************************
OBSERVER: Kim S. Youmans (YOUKI) DATE:04-21/22-00
BEGIN: 05:01UT END 07:30UT LOCATION: Treutlen
Co, Ga.
82. 24' 25" W; 32. 24' 45" N METHOD: Tape
Elev 240 ft Facing North
2 periods, sky 0% obscured, 1 break
Period 1 05:01 - 06:18 UT (c)SPO(3) (c)LYR(3)
Dead time = 2 min Teff = 1.25 F= 1.0
Avg LM = 5.23
Period 2 06:28 - 07:30 UT (c)SPO(2) (c)LYR(2)
Dead time =2 min Teff = 1.0 F= 1.00
Avg LM = 5.03
Limiting Magnitudes
05:15 UT (IMO 16)+5.15 (IMO 9)+5.42
05:45 UT (IMO 16)+5.15 (IMO 11)+5.28
06:15 UT (IMO 16)+5.15 (IMO 11)+5.28
06:45 UT (IMO 16)+5.15 (IMO 1)+5.00
07:15 UT (IMO 16)+5.15 (IMO 1)+4.83
Center FOV - Midperiod (UT)
Period 1 15hrs +55
Period 2 16hrs +58
Showers Observed
LYR(5) 18hr 04min +34
SPO(5)
Mag Distribution
Period 1
SPO(3)
+1(1) +3(1) +4(1)
LYR(3)
+1(1) +3(1) +4(1)
Period 2
SPO(2)
+3(1) +4(1)
LYR(2)
+2(1) +3(1)
Meteor Data
Period 1
(Time UT, Shower, Mag, Speed
01 05:04 LYR +3
3
02 05:21 SPO +3
2
03 05:40 SPO +1
4 .5 sec wake
04 06:04 LYR +1
3
05 06:09 LYR +4
3
06 06:14 SPO +4
5
Period 2
(Time UT, Shower, Mag, Speed
07 06:29 SPO +3
4
08 06:44 SPO +4
2
09 06:57 LYR +3
3
10 07:21 LYR +2
3 yellow