(meteorobs) Meteor observing report - GRALE, FL USA, 2007 Aug 12/13

Lew Gramer dedalus at alum.mit.edu
Thu Aug 16 16:30:36 EDT 2007


We were not quite so lucky with the weather our second night in the Florida 
Keys, but again both Norman and I got at least a full hour's worth of meteor 
data to report. Here is the summary - anyone interested in details, just drop 
me a line! OK, now back to my "other life" as oceanographer-in-training. :)

Maybe I'll get another chance to log some meteor "Teff" for the Orionids or 
Geminids later this year? I hope so. Mean time, clear skies to all!

Lew Gramer


==============================================================================
IMO METEOR REPORT
==============================================================================
Observer's Name: Lewis J. Gramer        IMO Observer Code: GRALE
EVENING Date:      12-Aug-2007          IMO Showers Active that Date:
MORNING Date:      13-Aug-2007              KCG,NIA,CAP,SDA,NDA,SIA,PER,PAU
Session Start Time (UT):  06:40
Session End Time (UT):    08:36

Observing Site Location: Bahia Honda State Park, FL, USA
Site Latitude: 24.66    Longitude: -81.25       Elevation: 1m

Observing Methods ("X" all that apply:)
X=Manual (pencil/paper)

Showers Observed
Name:           Perseids     Kappa Cygnid   Alpha Cap   N Delta Aqr
IMO Code:       PER          KCG            CAP         NDA
Radiant  Size:  5            5              5           5
Radiant Coord:  048 +57      284 +58        321 -06     337 -05

Name:           S Delta Aqr  Anthelion
IMO Code:       SDA          ANT
Radiant  Size:  5            10
Radiant Coord:  351 -13      332 -09

(NDA were still logged separate from ANT. The PAU were NOT observed.)

==============================================================================
PERIOD SUMMARY of All Meteor Data for Session:

# Start End   CFV    Teff LM   F     PER  KCG   CAP  NDA  SDA  ANT  Spor  TOT
1 6:40  8:36  00h+10 1.11 7.28 1.09  49    1     2    3    3    0    20    78

TOTALS               1.11 7.28 1.09  49    1     2    3    3    0    20    78
Average Magnitudes                   1.70 -1.00  3.50 4.67 3.00 0.00 4.05 2.48

==============================================================================
LIMITING MAGNITUDES:                    CLOUDS / OBSTRUCTIONS:
Time    Field   Count   LM              Start   End     % Obscured  Duration
6:48    6       47      7.3             7:39    8:40    10%         1:01
7:00    6       55      7.5
7:30    18      33      7.2
8:30    6       45      7.2

BREAKS:
Start   End             Duration        Breaktime
7:33    7:38            0:05            Per Period
7:46    8:24            0:38            Period 1                0:43

DEADTIME:               0:00:05 per meteor
                TOTAL D.T. - logs plus plots            # Plots Per Period
Period 1                0:06:30                         0


==============================================================================
MAGNITUDE DISTRIBUTIONS:
     -7  -5  -4   -3   -2   -1    0    1    2    3    4    5    6    7    TOT
PER   1   1   0    1    1    5    7    5    7   10    3    4    3.5  0.5  49
KCG   0   0   0    0    0    1    0    0    0    0    0    0    0    0     1
CAP   0   0   0    0    0    0    0    0    0    1    1    0    0    0     2
NDA   0   0   0    0    0    0    0    0    0    0    1    2    0    0     3
SDA   0   0   0    0    0    0    0    0    1    1    1    0    0    0     3
ANT   0   0   0    0    0    0    0    0    0    0    0    0    0    0     0
      ======================================================================
Spor  0   0   0    0    0    0    0    1    1    4    6    6    2    0    20
TOTAL 1   1   0    1    1    6    7    6    9   16   12   12    5.5  0.5  78


TRAIN DATA - Totals
Meteors with trains: 15
Percentage with trains: 19%

Per Shower Train Data
                PER     KCG     CAP     NDA     SDA     ANT     Spor
Number          14      0       0       0       0       0       1
Percent         29%     0%      0%      0%      0%      0%      5%

==============================================================================
GENERAL COMMENTS ABOUT SESSION
Observed with 45-year veteran AMS observer Norman W. McLeod III.
Set up on the ground on parking pavement, in NE lot of Larkspur Beach.
Temperature approx 82oF. Moderate sea breeze kept most mosquitoes away.
Ac and Ci clouds persisted all night, requiring breaks, frequent CFV changes.

Meteor highlight of the night was a gorgeous -7 Perseid seen through the
cirrus cover high up in the west - such a pretty color! Unfortunately,
though, clouds were too thick to note any train from this meteor.
==============================================================================


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