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(meteorobs) Observation August 13/14 2001



The Perseids produced a nice display on August 13/14 under dark 
skies. Some bright meteors were recorded including a pair of 
impressive mag -4 fireballs.

For this report, any NIA and SIA candidates are called as NDA since 
all those radiants are very close together.

Pierre Martin
Ottawa, Ontario



DATE: August 13/14 2001
BEGIN: 3:45 UT (23:45 EDT)  END: 5:45 UT (1:45 EDT)
OBSERVER: Pierre Martin (MARPI)
LOCATION: Long: -75.063 West; Lat: 45.269 North  Elevation:100m
City & Province: Casselman, 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
-----------------------------------------------------------------------

OBSERVING PERIODS: 0 = none seen;  / = shower not observed

PERIOD(UT) FIELD     Teff  LM    SPO PER NDA SDA CAP KCG PAU npx spx
3:45-4:45  22h07 +25 1.00  6.51  11  15   2   1   1   0   0   1   1
4:45-5:45  23h03 +28 1.00  6.42   5  24   4   0   0   0   0   1   0
-------------------------------------------------------------------
TOTALS:              2.00	 16  39   6   1   1   0   0   2   1 = 66
-------------------------------------------------------------------
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 -4  -3  -2  -1   0  +1  +2  +3  +4  +5  +6 	AVERAGE

SPO     0   0   0   0   0   0   2   8   5   3   1	+3.63
PER	2   0   1   1   0   4  11  11   4   4   1	+2.31
NDA     0   0   0   0   0   0   1   2   1   2   0	+3.66
SDA	0   0   0   0   0   0   0   0   1   0   0	+4.0
CAP     0   0   0   0   1   0   0   0   0   0   0	0.0
-------------------------------------------------
TOTALS: 2   0   1   1   1   4  14  21  11   9   2
-------------------------------------------------
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:
None
------------------------

Dead time: None

Breaks: None
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