(meteorobs) Observation April 8/9 2005
Pierre Martin
dob14.5 at sympatico.ca
Mon Apr 11 00:25:50 EDT 2005
Hi!
Here's my report for Friday's memorable session at Beckwith Park
(located south-west of Ottawa, On)... About halfway in the night, I
took a break from deep sky viewing and did about an hours worth of
meteor observing. As expected for this time of the year, the meteor
activity was pretty low with just one (nice!) Virginid and four
sporadics. It was nice to just sit back and "look up" again. Meteor
data follows below...
Clear skies,
Pierre Martin
Ottawa, Ontario
DATE: April 8/9 2005
BEGIN: 0525 UT (0125 EST) END: 0635 UT (0235 EDT)
OBSERVER: Pierre Martin (MARPI)
LOCATION: Long: -76.0669 West; Lat: 45.0453 North Elevation: 300 ft
City & Province: Blacks Corners (Beckwith Park), Ontario, CANADA
RECORDING METHOD: talking clock/tape recorder, plotting
-----------------------------------------------------------------------
OBSERVED SHOWERS:_____________________________________radiant position
VIR (Virginids - ANT)__________________________14:16 -13
SPO (random sporadics)
-----------------------------------------------------------------------
OBSERVING PERIODS: 0 = none seen; / = shower not observed
PERIOD(UT)_FIELD____Teff__LM_____VIR_SPO
0525-0635__1317+13__1.06__6.30____1___4 = 5
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 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
_______+1__+2__+3__+4_____AVE
SPO_____0___1___2___1____+3.00
VIR_____1___0___0___0____+1.00
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
F = 1.00
------------------------
Dead time: 6 min total (plotting, breaks)
Breaks (UT): None
-------------------------
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