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(meteorobs) Leo obs. LANMA 17-18 NOV 2000, Portugal
Hi,
Below a table with my data from the night of November 17-18. We had very
good conditions in Portugal, I am amazed about the limiting magnitude
considering the moonlight! (note the effect of climbing moon). The 'tric' we
did was that we used a low wall surrounding the little chapel to block the
moon from vision during most part of the night. The secluded observing site
and clear sky conditions did the rest.
My highest one-minute counts were 6-9 Leonids per minute short before 3:30
UTC
There appear to be at least two maxima in the profile; one first between
2:00- 2:15 UTC with ZHR ~240. Then rates decline notably to ~160 near 2:45
UTC. They rise again to a second maximum around 3:30 UTC with ZHR ~270.
During the last hour, rates rise again, probably the onset of the peak over
the States some 2 hours later. Please note that all quoted rate values are
very preliminary.
Data from November 16-17 will follow later.
- Marco Langbroek (DMS)
-----------------------------------------
Obs: Marco Langbroek (LANMA)
Loc.: Almodovar, Portugal, 37d 31' N, 8d 00' W
Date: 17-18 November, 2000
UT Teff Lm Leo Tau Spo
1:29-1:45 0.20 6.6 12 1 3
1:45-2:00 0.25 6.6 22 0 1
2:00-2:15 0.25 6.5 29 2 7
2:15-2:30 0.25 6.5 24 1 2
2:30-2:45 0.23 6.4 29 1 1
2:45-3:00 0.25 6.4 24 1 1
3:00-3:14 0.23 6.4 39 1 0
3:17-3:30 0.22 6.4 46 2 1
3:30-3:44 0.23 6.4 46 0 5
3:45-4:00 0.23 6.4 33 1 4
4:00-4:15 0.20 6.4 31 1 2
4:45-5:00 0.25 6.4 37 0 2
5:00-5:15 0.25 6.2 35 0 2
5:15-5:30 0.25 6.2 39 0 4
5:30-5:45 0.25 5.9 35 0 5
(5:45-5:54 0.15 var 26 0 2)
TOTAL 3.69 507 11 42 560
strm -8 -7 // -2 -1 0 +1 +2 +3 +4 +5
Leo 1 1 6 17 19 44 100 148 121 50 <2.72>
Spo 1 4 10 21 6
<3.64>
Tau 1 4 5 0 1
<1.73>
--------------------------------
---
Marco Langbroek private: marcolan@stad.dsldot nl
Leiden University work: m.langbroek@arch.leidenunivdot nl
Faculty of Archaeology
P.O. Box 9515 website: http://homes.dsldot nl/~marcolan
NL-2300 RA Leiden
The Netherlands
"What seest thou else
In the dark backward and abysm of time?"
William Shakespeare: The Tempest act I scene 2
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