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(meteorobs) Observation August 12/13 2001
Here is my data report for a full-night on August 12/13. It turns out
that post-maximum had nice decent rates. What a night, we even had a
bit of auroras! My narrative reports will follow up later...
Pierre Martin
Ottawa, Ontario
DATE: August 12/13 2001
BEGIN: 2:30 UT (22:30 EDT) END: 8:30 UT (4:30 EDT)
OBSERVER: Pierre Martin (MARPI)
LOCATION: Long: -76.0669 West; Lat: 45.0453 North Elevation:100m
City & Province: Franktown, Ontario, CANADA
RECORDING METHOD: talking clock/tape recorder
-----------------------------------------------------------------------
OBSERVED SHOWERS: 3-letter code; radiant position
PER (Perseids) 02h52 +59
SDA (S. Delta Aquarids) 23h20 -14
NDA (N. Delta Aquarids) 22h22 -06
CAP (Alpha Capricornids) 21h05 -05
SIA (S. Iota Aquarids) 22h28 -13
NIA (N. Iota Aquarids) 22h25 -11
PAU (Pisces Austrinids) 23h25 -28
KCG (Kappa Cygnids) 18h45 +56
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OBSERVING PERIODS: 0 = none seen; / = shower not observed
PERIOD(UT) FIELD Teff LM SPO PER NIA KCG CAP SDA PAU napx sapx
2:30-3:55 19h09 +76 1.00 6.55 8 19 1 2 0 1 0 0 0
3:55-5:10 19h09 +76 1.00 6.45 8 37 2 0 0 0 0 0 0
5:10-6:17 18h45 +74 1.00 6.25 3 31 0 0 2 0 0 0 0
6:17-7:23 18h45 +74 1.10 6.15 7 42 1 0 0 0 0 0 1
7:23-8:30 21h18 +62 1.12 6.15 5 37 2 0 0 0 0 3 3
------------------------------------------------------------------
TOTALS: 5.22 31 166 6 2 2 1 0 3 4 = 215
------------------------------------------------------------------
The first column (Period UT) refers to observing periods broken down
as close as possible to one hour of true observing, in Universal
Time. The second column (Field) is the area in in the sky where I
centered my field of view. The third column (TEFF) represents
effective observing time (corrected for breaks or any time I did not
spent looking at the sky). One hour = 1.00 teff. The fourth column
(LM) is the average naked eye limitimg magnitude, determined by
triangle star counts. All following columns indicate the number of
meteors for each shower observed.
MAGNITUDE DISTRIBUTIONS:
SHOWER -3 -2 -1 0 +1 +2 +3 +4 +5 +6 AVERAGE
SPO 0 0 0 0 2 3 14 10 8 1 +3.58
PER 2 1 6 9 15 36 38 35 22 2 +2.70
NIA 0 0 0 0 0 0 5 1 0 0 +3.16
KCG 0 0 0 0 0 0 2 0 0 0 +3.0
CAP 0 0 0 1 0 1 0 0 0 0 +1.0
SDA 0 0 0 0 0 0 1 0 0 0 +3.0
---------------------------------------------
TOTALS: 2 1 6 10 17 40 60 46 30 3
---------------------------------------------
Note: Magnitude scale is to determine the brightness of sky objects.
Magnitude -8 is comparable to a quarter moon, magnitude -4 with the
planet Venus, magnitude -1 with the brightest star Sirius, magnitude
+2 to +3 with most average naked eye stars and magnitude +6 to +7 are
the faintest stars the naked eye can see under typical dark
conditions. A meteor of at least magnitude -3 is considered a
fireball. The above table contains the magnitudes from all observed
meteors, and the average for showers.
SKY OBSCURED:
- 10% from 8:20UT to 8:30UT
------------------------
Dead time: 17 minutes
Breaks: 3:36 (3 min), 2:53-3:06, 3:20-3:29, 3:44-3:46, 4:01-4:03,
4:24-4:30, 4:40-4:41, 4:54-4:58, 5:17-5:19, 5:33-5:35, 5:54-5:55,
5:57-5:58, 6:11-6:12
---------------------------------------------------------------------
NOTE: Due to the risk of mis-alignments, all meteors from NDA and SIA
radiants are classed as NIA (antihelion) in this report.
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