(meteorobs) Observation June 10/11 2004

[Pierre Martin]

Here's my report for a short evening of meteor observing at Bootland 
Farm (near Arnprior) out West of Ottawa.  The sky conditions were 
above-average transparency with LM=6.5.  For this session I faced the 
south-east.

In one hour observing time, I logged only 7 meteors.  However, some of 
those were very nice vividly coloured meteors...

The best was the mag -3 deep yellow/orange Xi Draconid into Cygnus.  It 
had a 15 degrees path.  It was well seen and plotted.

Barely four minutes later, an impressive mag -1 earthgrazing sporadic 
appeared.  It travelled slowly a persistent 40 degrees path from 
Serpens to Scorpius.  It displayed a vivid yellow color and left a 
short wake.

Another highlight was a vivid blue mag 0 north apex sporadic at 3:36UT 
that shot a swift 30 degrees and left a 2 second train.
	
Clear skies!

Pierre Martin
Ottawa, Ontario



DATE: June 10/11 2004
BEGIN: 0240 UT (2240 EDT)  END: 0342 UT (2342 EDT)
OBSERVER: Pierre Martin (MARPI)
LOCATION: Long: -76 29' West; Lat: 45.23' North  Elevation: 50m
City & Province: Bootland Farm (Arnprior), Ontario, CANADA
RECORDING METHOD: talking clock/tape recorder, plotting
-----------------------------------------------------------------------

OBSERVED SHOWERS:_____________________________________radiant position
		ANT (Antihelions or Sagittarids)_______________18:24 -23
		OSC (Omega Scorpids)___________________________16:40 -21
		JLY (June Lyrids)______________________________18:24 +35
		XDR (Xi Draconids)_____________________________18:24 +55
		NPX (sporadics from north apex)________________23:24 +12
		SPX (sporadics from south apex)________________23:24 -18
		SPO (random sporadics)
-----------------------------------------------------------------------

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

PERIOD(UT)__FIELD___Teff__F_____LM_____ANT_OSC_JLY_XDR_NPX_SPX_SPO

0240-0342__1654+10__1.01__1.00__6.50____0___0___0___1___1___/___5  =  7

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). The fourth column (F) is a value for obstructions in the field of 
view such as clouds (1.00 = 100% clear skies). The next column (LM) is 
the average naked eye limiting 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_____AVE

SPO___0___0___1___1__0___0___3___1____+2.00
XDR___1___0___0___0__0___0___0___0____-3.00

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): None
------------------------

Dead time: 1.66 min. (for plotting)

Breaks (UT): None
-------------------------