(meteorobs) Observation August 1/2 2003

This past Saturday morning, I was out at Casselman for a quick one 
hour meteor session before the clouds moved in.  I did have some thin 
clouds go by my field of view at times.  The transparency was decent, 
but not exceptional.

I recorded 30 meteors in all.  The Perseids were quite surprising 
with as many as 12 seen.  The brighter Perseids would usually be 
quite colorful too!

The highlight was at 0640UT when a vivid blue-green Perseid of zero 
mag appeared high in the south-east.  It left behind a one second 

Clear skies,

Pierre Martin
Ottawa, Ontario

DATE: August 1/2 2003
BEGIN: 0607 UT (0207 EST)  END: 0720 UT (0320 EST)
OBSERVER: Pierre Martin (MARPI)
LOCATION: Long: -75.063 West; Lat: 45.269 North  Elevation: 50m
City & Province: Casselman, Ontario, CANADA
RECORDING METHOD: talking clock/tape recorder, cord align method

OBSERVED SHOWERS:_______________________________________radiant position
		CAP (Alpha Capricornids)_______________________2044 -09
		NDA (North Delta Aquarids)_____________________2200 -06
		SDA (South Delta Aquarids)_____________________2252 -14
		PAU (Pisces Austrinids)________________________2304 -27
		KCG (Kappa Cygnids)____________________________1848 +58
		PER (Perseids)_________________________________0220 +57
		ANT/SIA (sporadics from the antihelion)________2140 -13
		NPX (sporadics from the north apex)____________0240 +30
		SPX (sporadics from the south apex)____________0240 +00
		SPO (random sporadics)

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


0607-0720__2241+29__1.17__6.30____5___2___0___0___0__12___0___3___1___7 = 30

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.




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 (last column) for showers.

SKY OBSCURED (FOV): 10% from 0705 to 0720

Corresponding F value: 1.025 for the period.

Dead time: 3 minutes

Breaks (UT):  0647-0650

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