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(meteorobs) NAMN Meteor Report: Jul 12/13 (Hall)



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NAMN VISUAL SUMMARY REPORT
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DATE: 12/13 July 1997  BEGIN:  4.15 UT   END:  8.01 UT
OBSERVER:  Cathy Hall
LOCATION: Long: 76 10' 35" West;  Lat: 45 18' 35" North
City & State:  Almonte, Ontario, Canada  Elevation: 400 ft.
RECORDING METHOD:  tape recorder

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OBSERVED SHOWERS: 3-letter code; radiant position; radiant diameter

SAG  295 -21.5 (19h40m -21.5) diam. 15/10   
CAP  291 -14.5 (19h24m -14.5) diam. 8
JPE  342 +15.5 (22h48m +15.5) diam. 5
SDA  327 -19 (21h48m -19) diam. 5
NDA  314 -10 (20h56m -10) diam. 5
PAU  328 -34.5 (21h52m -34.5) diam. 5
PER  9 +50.5 (0h36m +50.5) diam. 5

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OBSERVING PERIODS: 0 = none seen;    / = shower not watched.

PERIOD(UT)       FIELD     Teff   F    LM   
1. 4.15-5.30   21h40m +15  1.07  1.01  5.7     
2. 5.30-7.00   22h40m +15  1.08  1.18  5.6
3. 7.00-8.01   23h20m +25  0.94  1.34  5.4

        SAG  CAP  JPE  SDA  NDA  PAU  PER  SPO
1.       0    1    0    0    1    0    1    8
2.       0    0    1    0    1    0    1    13
3.       1    0    0    0    0    0    1    4

TOT:     1    1    1    0    2    0    3    25
TEFF:   3.09 hrs.

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MAGNITUDE DISTRIBUTIONS:

SHOWER    +1     +2     +3    +4     +5     TOTAL    MEAN
SAG        0      1      0     0      0       1      2.00
CAP        0     .5     .5     0      0       1      2.50
JPE        0      0      0    .5     .5       1      4.50
SDA        0      0      0     0      0       0       n/a
NDA        0      1      0    .5     .5       2      3.25
PAU        0      0      0     0      0       0       n/a
PER        1     .5     1.5    0      0       3      2.17
SPO        2     4.5     1    9.5     8       25     3.68

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SKY OBSCURED (UT):

5.15-5.30   5  %
5.30-5.56   5  %
5.56-6.00   10 %
6.00-6.34   20 %
6.34-6.37   25 %
6.37-6.50   15 %
6.50-6.56   25 %
6.56-7.05   30 %
7.05-8.01   25 %

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DEAD TIME:   28.75 min.
BREAKS:   12 min. (6.22-6.34)

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LIMITING MAGNITUDE:

          STAR      STAR
TIME      AREA      COUNT     LM
4.15       14        12       5.7
5.00       14        12       5.7
5.30       14        12       5.7
6.00       14        12       5.7
6.30       14        11       5.5
7.00       14        10       5.4
7.30       14        12       5.7
8.00       14         8       5.2

MEAN LIMITING MAGNITUDE:  5.6

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METEOR DATA:

#   (UT)  MAG  VEL CLR  SHR  TRAIN               MAP/ACC
 1  4.26   4.5    3      W     SPO   
 2  4.27   1.5    3      W     SPO              plot#1  6/2
 3  4.31   4.5    3      W     SPO 
 4  4.34   2.0    3      W     NDA              plot#2  6/3
 5  4.42   2.5    4      W     PER
 6  4.56   1.5    3      W     SPO  1sec        plot#3  1/2
 7  5.03   4.5    3      W     SPO              plot#4  6/2
 8  5.13   2.5    2      W     CAP              plot#5  6/1
 9  5.20   5.0    3      W     SPO
10  5.27   5.0    3      W     SPO
11  5.27   4.5    3      W     SPO
12  5.31   1.0    3      W     SPO
13  5.34   5.0    3      W     SPO
14  5.36   3.5    3      W     SPO
15  5.37   2.0    3      W     SPO  1sec        plot#6  6/1
16  5.38   4.0    4      W     SPO
17  5.43   4.0    3      W     SPO              plot#7  6/2
18  5.53   1.0    4      W     PER  1sec        plot#8  6/2
19  5.56   4.5    3      W     SPO
20  5.58   4.5    3      W     SPO              plot#9  6/2
21  6.01   4.0    3      W     SPO              plot#10 6/3
22  6.19   4.5    3      W     NDA
23  6.39   4.5    3      W     SPO
24  6.42   2.0    3      W     SPO  1sec        plot#11 6/2
25  6.49   5.0    3      W     SPO
26  6.52   4.0    3      W     SPO
27  6.54   4.5    3      W     JPE
28  7.03   2.0    3      W     SPO
29  7.19   4.5    3      W     SPO
30  7.20   4.0    4      W     SPO              plot#12  6/3
31  7.32   2.5    3      W     SPO              plot#13  6/3
32  7.39   3.0    4      W     PER
33  8.01   2.0    2      W     SAG

VELOCITY (VEL.) SCALE: 
0 = Stationary
1 = Very Slow
2 = Slow
3 = Medium
4 = Fast
5 = Very Fast

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REMARKS:
Temperature:  18C (65F), mosquitoes
Recording time/meteor:  5 sec.
Plotting time/meteor:  2 min.
Observed shower positions extrapolated/interpolated from WGN 25-1

Notes on Meteors:
Plots #3 and #11 are Perseid-type meteors, but originating below Perseus, or
Auriga possibly.

<END OF REPORT>