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(meteorobs) Perseid observations
Hi!
We are the Meteor Group of Visnjan School of Astronomy, Visnjan Observatory,
Croatia. Last night was fine so we could do the observations. Tonight the
weather doesn't seem to be so good but we hope we could do some new
observations.
Meteor Group of VSA2002
International Meteor Organization
VISUAL OBSERVING FORM - Summary Report
Date: 12/13 (day), 08 (month), 2002 (year).
Begin: 20h 29m. End: 02h 30m. (UT)
Location: Long. 13deg 43min 48sec East,
Lat. 45deg 16min 52sec N,
h=246.5 m.
IMO Code: 23003
Place: Visnjan Observatory, Visnjan. Country: Croatia
Observer: Goran Niksic.
IMO Code: NIKGO
Note:
Observed showers (please use IMO three letter code):
Shower alfa delta
PER 43deg +58deg
Observed numbers of meteors per period and per shower:
M: observing method (C(ounting), P(lotting) or R (meteor coordinates
estimated directly))
N: number of meteors observed; distinguish between "0" (no meteors seen) and
"/" (shower not analyzed during the period)
Period (UT) Field Teff F Lm PER Spor
Total ZHR
alfa delta (h) M N M N N
20:29-21:28 262.5 15 0.92 1.00 5.2 C 2 C 10
19 8 ± 2.82
21:28-22:26 262.5 15 0.9 1.00 5.2 C 18 C 11 29
69 ± 16.263
22:35-23:38 292.5 30 0.63 1.03 5.0 C 14 C 3 17
96 ± 3,74
23.38-00:51 292.5 30 1.18 1.11 5.0 C 28 C 6
34 130 ± 24,56
Totals of N 69 30 99
Give interval analysis for each period mentioned above.
Magnitude distributions (for the entire observation):
Shower -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4
5 6 TOTAL
PER 0 0 0 0 2 4 8.5 7.5 11 15.5 10.5 7 3 0
0 69
Spor. 0 0 0 0 1 1 2.5 4 8.5 6.5 4 1.5 1 0
0 30
Interval from 20:29 to 21:28 UT
Time Nr N Lm
20:29-20:50 14 8 5.2
20:50-21:15 14 8 5.2
21:15-21:28 14 8 5.2
Mean limiting magnitude Lm: 5.2 (same as on summary report)
Sky obscured %
20:29-20:50 0
K= 0.0 F=1/(1-K)= 1.00 (same as on summary report)
Time for plotting: / s/meteor, / min total. Breaks / min total.
Net observed time: Teff: 0.92 h (same as on summary report)
Breaks
20:54-20:58 UT
Interval from 21:28 to 22:26 UT
Time Nr N Lm
21:28-21:45 14 8 5.2
21:45-22:05 14 8 5.2
22:05-22:26 14 8 5.2
Mean limiting magnitude Lm: 5.2 (same as on summary report)
Sky obscured %
21:28-22:26 0
K= 0.0 F=1/(1-K)= 1.00 (same as on summary report)
Time for plotting: / s/meteor, / min total. Breaks / min total.
Net observed time: Teff: 0.9 h (same as on summary report)
Breaks
21:38-2142 UT
Interval from 22:35 to 23:38 UT
Time Nr N Lm
22:35-22:50 14 7 5.0
22:50-23:20 14 7 5.0
23:20-23:38 14 7 5.0
Mean limiting magnitude Lm: 5.0 (same as on summary report)
Sky obscured %
22:35-22:50 0
22:50-23:20 0
23:20-23:28 10
K= 0.03 F=1/(1-K)= 1.03 (same as on summary report)
Time for plotting: / s/meteor, / min total. Breaks / min total.
Net observed time: Teff: 0.63 h (same as on summary report)
Breaks
23:16-23:38 UT
Interval from 23:40 to 00.51 UT
Time Nr N Lm
23:40-23:50 14 7 5.0
23:50-00:20 14 7 5.0
00:20-00:51 14 7 5.0
Mean limiting magnitude Lm: 5.0 (same as on summary report)
Sky obscured %
23:40-23:50 10
23:50-00:20 10
00:20-00:51 10
K= 0.1 F=1/(1-K)= 1.11 (same as on summary report)
Time for plotting: / s/meteor, / min total. Breaks / min total.
Net observed time: Teff: 1.18 h (same as on summary report)
No breaks
_______________________________________________________________________
International Meteor Organization
VISUAL OBSERVING FORM - Summary Report
Date: 12/13 , 8, 2002. 0
Location: Long. 13deg 43min 44sec East,
Lat. 45deg 16min 39sec N,
h=246.5 m.
IMO Code: 23003
Place: Visnjan Observatory, Visnjan. Country: Croatia
Observer: Nikola Strah
IMO Code: STRNI
Observing group:
Note:
Observed showers (please use IMO three letter code):
Shower alfa delta
PER 43 58
KCG 284 58
Observed numbers of meteors per period and per shower:
M: observing method (C(ounting), P(lotting) or R (meteor coordinates
estimated directly))
N: number of meteors observed; distinguish between "0" (no meteors seen) and
"/" (shower not analyzed during the period)
Period (UT) Field Teff F Lm PER KCG
Spor Total
alfa delta (h) M N M N M
N N
20:29- 21:05 292 10 0.46 1 5.2 C 10 C 0 C
2 12 90 ± 26 21:06- 22:05 307 15 0.87 1 5.7 C
13 C 0 C 2 15 37 ± 10
22:06- 22:49 345 15 0.72 1 6.1 C 11 C 0 C
8 19 39 ± 9
23:53- 01:16 345 15 1.27 1 5.6 C 25 C 0 C
1 26 48 ± 9
01:17- 02:30 15 60 1.18 2.27 5.34 C 20 C 0 C
0 20 117 ± 26
Totals of N 4.5 79 0 13 92
Give interval analysis for each period mentioned above.
Magnitude distributions (for the entire observation):
Shower -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4
5 6 TOTAL
PER 0 0 1 1 3 3 2 8 10 18 14 11 4
4 0 79
KCG 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0
Spor. 0 0 0 0 0 0 0 2 2 5 1 1 1
1 0 13
General Remarks:
Interval from 20 h 29 min to 21 h 05 min
Time Nr N Lm
20 h 29 min 5 6 5.2
Mean limiting magnitde Lm:5.2 (same as on the summary report)
Obscured field %
20 h 29 min to 21 h 05 min 0
Breaks
20 h 53 min to 21 h 02 min
K=0, F=1/(1-K)= 1 (same as on summary report)
Time for plotting: 0 sec/meteor, 0 m total, Breaks: 9 min total
Net observed time Teff= 27 min= 0.45 h (same as on summary report)
_____________________________________________________________________________________________
Interval from 21 h 06 min to 22 h 05 min
Time Nr N Lm
21 h 20 min 14 7 5.0
22 h 03 min 5 6 5.2
Mean limiting magnitde Lm:5.7 (same as on the summary report)
Obscured field %
21 h 06 min to 22 h 05 min 0
Breaks
21 h 56 min to 22 h 03 min
K=0, F=1/(1-K)= 1 (same as on summary report)
Time for plotting: 0 sec/meteor, 0 m total, Breaks: 7 min total
Net observed time Teff= 52 min= 0.87 h (same as on summary report)
_________________________________________________________________________________________________
Interval from 22 h 06 min to 22 h 49 min
Time Nr N Lm
22 h 05 min 6 9 6.2
22 h 38 min 6 6 5.4
22 h 38 min 14 7 5.0
Mean limiting magnitde Lm:6.1 (same as on the summary report)
Obscured field %
22 h 06 min to 22 h 49 min 0
Breaks
0
K=0, F=1/(1-K)= 1 (same as on summary report)
Time for plotting: 0 sec/meteor, 0 m total, Breaks: 0 min total
Net observed time Teff= 43 min= 0.72 h (same as on summary report)
_________________________________________________________________________________________________
Interval from 23 h 53 min to 01 h 16 min
Time Nr N Lm
23 h 53 min 6 7 5.7
23 h 53 min 14 11 5.5
Mean limiting magnitde Lm:5.6 (same as on the summary report)
Obscured field %
23 h 53 min to 1 h 16 min 0
Breaks
0 h 15 min to 0 h 19 min
0 h 42 min to 0 h 45 min
K=0, F=1/(1-K)= 1 (same as on summary report)
Time for plotting: 0 sec/meteor, 0 m total, Breaks: 7 min total
Net observed time Teff= 76 min= 1.27 h (same as on summary report)
________________________________________________________________________________________________
Interval from 01 h 17 min to 02 h 30 min
Time Nr N Lm
01 h 27 min 6 8 5.9
01 h 39 min 2 6 5.0
Mean limiting magnitde Lm:5.34 (same as on the summary report)
Obscured field %
01 h 17min to 01 h 19 min 0
01 h 19 min to 01 h 26 min 20
01 h 26 min to 02 h 04 min 60
02 h 04 min to 02 h 21 min 50
02 h 21 min to 02 h 30 min 80
Breaks
01 h 58 min to 02 h 00 min
K=0.56, F=1/(1-K)= 2.27 (same as on summary report)
Time for plotting: 0 sec/meteor, 0 m total, Breaks: 2 min total
Net observed time Teff= 71 min= 1.18 h (same as on summary report)
________________________________________________________________________
International Meteor Organization
VISUAL OBSERVING FORM - Summary Report
Date: 12/13 (day), 8(month), 2002(year).
Begin: 20h 28m. End: 3h 55m. (UT)
Location: Long. 13deg 43min 44sec East,
Lat. 45deg 16min 39sec N,
h=246.5 m.
IMO Code: 23003
Place: Visnjan Observatory, Visnjan. Country: Croatia
Observer: Stefan Cikota
IMO Code: CIKST
Observed showers (please use IMO three letter code):
Shower alfa delta
PER 43 58
KCG 248 58
Observed numbers of meteors per period and per shower:
M: observing method (C(ounting), P(lotting) or R (meteor coordinates
estimated directly))
N: number of meteors observed; distinguish between "0" (no meteors seen) and
"/" (shower not analyzed during the period)
Period (UT) Field Teff F Lm PER KCG
Spor Total ZHR
alfa delta (h) M N M N M
N
20:28-21:30 300 60 0.91 1 5 C 24 C 2 C
7 31 142±26
21:30-22:30 300 60 1 1 5 C 26 C 0 C
17 43 180±27
22:30-23:30 300 60 1 1 5.1 C 21 C 0 C
18 39 148±24
22:30-23:25 300 60 0.91 1 5.1 C 28 C 0 C
6 34 146±25
23:30-00:20 300 60 0.83 1.11 5.1 C 23 C 0 C
3 26 138±27
Totals of N 122 2 51 175
Give interval analysis for each period mentioned above.
Magnitude distributions (for the entire observation):
Shower -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4
5 6 TOTAL
PER 0 0 0 0.5 4.5 6 22 20 24 8 11 10 7
2 0 115
KCG 0 0 0 0 0 0 0 0 0 1 0 0 1
0 0 2
Spor. 0 0 0 0 3 4 10 8 8 3 8 5 5
4 0 58
General Remarks:
Interval from 20:28 to 21:30
Time Nr N lm
20:28 13 6 5.0
14 7 5.0
Mean limiting magnitude lm: 5.0
Obscured Field %
20:28 to 21:30 0
K=0 , F=1/(1-K)=1
Net observed time Teff= 55m = 0.91h
Interval from 22:30 to 23:30
Time Nr N lm
23:30 13 6 5.0
14 7 5.0
Mean limiting magnitude lm: 5.0
Obscured Field %
22:30 to 23:30 0
K=0 , F=1/(1-K)=1
Net observed time Teff= 60m= 1h
Interval from 23:30 to 00:25
Time Nr N lm
23:30 15 5 5.1
16 5 5.1
Mean limiting magnitude lm: 5.1
Obscured Field %
23:30 to 00:25 0
K=0 , F=1/(1-K)=1
Net observed time Teff= 60m= 1h
Interval from 00:30 to 01:25
Time Nr N lm
00:30 15 5 5.1
16 5 5.1
Mean limiting magnitude lm: 5.1
Obscured Fieled %
00:30 to 1:25 0
K=0 , F=1/(1-K)=1
Net observed time Teff= 55m = 0.91h
Interval from 01:30 to 02:20
Time Nr N lm
01:30 15 5 5.1
16 5 5.1
Mean limiting magnitude lm: 5.1
Obsculeted Filed %
01:30 to 02:20 10
K=0.1 , F=1/(1-K)=1.11
Net observed time Teff= 50m = 0.83h
______________________________________________________________________
International Meteor Organization
VISUAL OBSERVING FORM - Summary Report
Date: / 12/13,8, 2002.
Begin: 20h 29m. End: 01h 45m. (UT)
Location: Long. 13deg 43min 48sec East,
Lat. 45deg 16min 53sec N,
h=246.5 m.
IMO Code: /23003
Place: Visnjan Observatory, Visnjan. Country: Croatia
Observer: Vedrana Dzaja
IMO Code: DZAVE
Observed showers (please use IMO three letter code):
Shower alfa delta
Per 43 58
Observed numbers of meteors per period and per shower:
M: observing method (C(ounting), P(lotting) or R (meteor coordinates
estimated directly))
N: number of meteors observed; distinguish between "0" (no meteors seen) and
"/" (shower not analyzed during the period)
Period (UT) Field Teff F Lm PER Spor
Total ZHR
alfa delta (h) M N M N N
20:29-21:00 15 30 0,71 1 5,7 C 45 C 3
48 136+/-20
23:03-01:45 15 30 2,42 1 5,7 C 67 C 7
74 59+/-7
Totals of N 112 10 122
Give interval analysis for each period mentioned above
Magnitude distributions (for the entire observation):
Shower -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4
5 6 TOTAL
PER 1 3 11 11 12 22 15 26
11 112
Spor. 1 3 2
4
Interval from: 20h 29m to: 21:00 UT
Time Nr N Lm
20 h29m 13 8 5,7
Mean limiting magnitude Lm: 5,7
K=0, F=1 (same as on summary report)
Time for plotting: 0, /meteor, 0 total. Breaks: 0 m total.
Net observed time Teff= 0,71 h. (same as on summary report)
Sky obscured %
20h 29m-21h 00m 0
Interval from: 23h 03m to: 01h 45m UT
Time Nr N Lm
23h 03m 13 8 5,7
Mean limiting magnitude Lm: 5,7 (same as on summary report)
Sky obscured %
23h 03m-01h45m 0
K=0, F=1 (same as on summary report)
Time for plottig: 0, /meteor, 0 total. Breaks: 0 m total.
Net observed time Teff= 2,42 h. (same as on summary report)
General Remarks:
________________________________________________________________________
International Meteor Organization
VISUAL OBSERVING FORM - Summary Report
Date: 12/13. 08. 2002.
Begin: 20h 29m. End: 02h 30m. (UT)
Location: Long. 33deg 43min 48sec East,
Lat. 45deg 16min 43sec N,
h=246.5 m.
IMO Code: 23003
Place: Visnjan Observaory, Visnjan; Country: Croatia
Observer: Petra Korlevic
IMO Code: KORPE
Observing group: /
Observed showers (please use IMO three letter code):
Shower alfa delta
PER 43 58
Spor
Observed numbers of meteors per period and per shower:
M: observing method (C(ounting), P(lotting) or R (meteor coordinates
estimated directly))
N: number of meteors observed; distinguish between "0" (no meteors seen) and
"/" (shower not analyzed during the period)
Period (UT) Field Teff F Lm PER Spor
Total YHR
alfa delta (h) M N M N N
20:29-21:29 225 75 1 1.11 5,7 c 24 c 16 40
57 ± 2
21:29-22:48 225 75 1.98 1.11 5,7 c 26 c 20
46 31 ± 1
22:48-23:30 225 75 1.36 1.11 5,7 c 27 c 17
44 47 ± 2
23:30-00:50 225 75 2 2 5,7 c 44 c 24
68 94 ± 2
00:50-02:30 225 75 0.91 2 5.4 c 31 c 9
40 195 ± 6
Totals of N 152 86 238
Give interval analysis for each period mentioned above.
Magnitude distributions (for the entire observation):
Shower -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4
5 6 TOTAL
PER 0.5 2.5 0.5 1.5 2 13.5 25 26.5 25 21 20.5
13 0.5 152
Spor 0.5 7 16 18 16.5 9 8
10 1 86
Interval from: 20h 29m to: 21h 29m UT
Time Nr N Lm
20h 29m 19 6 5.7
Mean limiting magnitude Lm: 5.7
Sky Obscured
20h 29m 0%
K= 0.1, F=1/(1-K)=1.11
Net observed time Teff: 1
Interval from: 21h 29m to: 22h 48m UT
Time Nr N Lm
21h 29m 19 6 5.7
Mean limiting magnitude Lm: 5.7
Sky Obscured
21h 29m 0%
K= 0.1, F=1/(1-K)=1.11
Net observed time Teff: 1.98
Interval from: 22h 48m to: 23h 30m UT
Time Nr N Lm
22h 48m 19 6 5.7
Mean limiting magnitude Lm: 5.7
Sky Obscured
22h 48m 0%
K= 0.1, F=1/(1-K)=1.11
Net observed time Teff: 1.36
Interval from: 23h 30m to: 00h 50m UT
Time Nr N Lm
23h 30m 19 6 5.7
Mean limiting magnitude Lm: 5.7
Sky Obscured
23h 30m 30%
K= 0.5, F=1/(1-K)=2
Net observed time Teff: 2
Interval from: 00h 50m to: 02h 30m UT
Time Nr N Lm
00h 50m 19 5 5.4
Mean limiting magnitude Lm: 5.4
Sky Obscured
00h 50m 50%
K= 0.5, F=1/(1-K)=2
Net observed time Teff: 0.91
_______________________________________________________________________
International Meteor Organization
VISUAL OBSERVING FORM - Summary Report
Date: / 12/13, 8, 2002.
Begin: 20h 29m. End: 2h 30m. (UT)
Location: Long. 13deg 43min 44sec East,
Lat. 45deg 16min 39sec N,
h=246.5 m.
IMO Code: /23003
Place: Visnjan Observatory, Visnjan. Country: Croatia
Observer:Nela Tomić
IMO Code: TOMNE
Observed showers (please use IMO three letter code):
Shower alfa delta
PER 43 58
KCG 284 58
Observed numbers of meteors per period and per shower:
M: observing method (C(ounting), P(lotting) or R (meteor coordinates
estimated directly))
N: number of meteors observed; distinguish between "0" (no meteors seen) and
"/" (shower not analyzed during the period)
Period (UT) Field Teff F Lm PER KCG Spor
Total ZHR
alfa delta (h) M N M N M N
N
20:29-21:15 292 10 0,76 1 5,3 c 11 c 0 c 11
22 45+-13
21:29-22:20 229 10 0,85 1,23 5,3 c 6 c 0 c 17
23 27+-11
00:10-02:30 345 10 2,33 2,82 5,3 c 21 c 0 c 15
36 121+-26
Totals of N 38 0 43 81
Give interval analysis for each period mentioned above.
Note:
Magnitude distributions (for the entire observation):
Shower -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4
5 6 TOTAL
PER 0 0 0 0 1 2,5 3,5 8 6,5 6 6,5 2 2
0 0 38
Spor. 0 0 0 0 0 2,5 0,5 3,5 10,5 10 8 5,5 1,5
0 1 43
General Remarks:
________________________________________________________________________________________
Interval from 20:29 to 21:15
Time Nr N Lm
20:30 14 9 5,3
Mean limiting magnitude Lm: 5,3 (same as on summary report)
Obscured field %
20:29-21:15 0
K=0
F=1/(1-K)=1
Breaks: 0 m total
Net observed time Teff= 46 m = 0,76h
________________________________________________________________________
Interval from 21:29 to 22:20
Time Nr N Lm
22:00 14 9 5,3
Mean limiting magnitude Lm: 5,3 (same as on summary report)
Obscured field %
21:29-22:00 0
22:00-22:00 50
Breaks
21:40 to 21:59
K=0,19
F=1/(1-K)=1,23
Breaks: 9 m total
Net observed time Teff= 51 m = 0,85 h
___________________________________________________________________________
Interval from 01:10 to 2:30
Time Nr N Lm
01:20 14 9 5,3
Mean limiting magnitude Lm: 5,3 (same as on summary report)
Obscured field %
01:10-01:40 60
01:40-02:20 50
02:20-02:30 90
K=0,593
F=1/(1-K)=2,45
Breaks: 0 m total
Net observed time Teff= 80 m = 1,33 h
_______________________________________________________________________
International Meteor Organization
VISUAL OBSERVING FORM - Summary Report
Date: 12/13 (day), 08(month), 2002(year).
Begin: 21h 55m. End: 0h 34m. (UT)
Location: Long. 13deg 43min 44sec East,
Lat. 45deg 16min 39sec N,
h=246.5 m.
IMO Code: 23003
Place: Visnjan Observatory, Visnjan. Country: Croatia
Observer: SENKA PINTARIC
IMO Code: PINSE
Observed showers (please use IMO three letter code):
Shower alfa delta
PER 43 58
KCG 28 58
Observed numbers of meteors per period and per shower:
M: observing method (C(ounting), P(lotting) or R (meteor coordinates
estimated directly))
N: number of meteors observed; distinguish between "0" (no meteors seen) and
"/" (shower not analyzed during the period)
Period (UT) Field Teff F Lm PER KCG Spor
Total ZHR (no correction for radiant hight)
alfa delta (h) M N M N M N
N
21:55-22:58 290 45 0,9 1 5,9 C 31 C 0 C 15
46 61
23:03-23:50 290 45 0,7 1,09 5,5 C 26 C 0 C
8 34 105
23:50-0:34 320 30 0,45 1 5,5 C 21 C 0 C
1 22 127
Totals of N 2,05 78 0 24 102
Give interval analysis for each period mentioned above.
Fields:
Star alfa delta
Magnitude distributions (for the entire observation):
Shower -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4
5 6 TOTAL
PER 0 0 0 0 0 0 1 4 7 7 18 15 18 2
0 79 KCG 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0
Spor 0 0 0 0 0 0 0 3 2 1 1 4 4
9 0 24
Interval from 21:55 to 22:58
Time Nr N lm
21:55 14 10 5,8
21:55 7 13 5,9
22:40 14 11 5,9
Mean limiting magnitude lm:5,866
Obscured Field %
21:55 to 22:58 0
K=0, F=1/(1-K)=1
Breaks
22:02 to 22:09
Breaks: 07m total
Net observed time Teff= 56m= 09h
Interval from 23:02 to 23:50
Time Nr N lm
23:11 14 11 5,5
23:11 7 12 5,5
Mean limiting magnitude lm: 5,5
Obscured Field %
23:03 to 23:08 0
23:10 to 23:25 0
23:25 to 23:28 25
23:28 to 23:30 50
23:33 to 23:35 45
23:35 to 23:43 10
23:43 to 23:50 0
K= 0,08, F=1/(1-K)=1,09
Breaks
23:08 to 23:10
23:30 to 23:33
Breaks: 5m total
Net observed time Teff= 42m= 0,7h
Interval from 23:50 to 0:34
Time Nr N lm
23:55 14 11 5,5
Mean limiting magnitude lm: 5,5
Obscured Field %
23:50 to 0:34 0
K= 0, F=1/(1-K)= 1
Breaks
23:54 to 0:01
0:20 to 0:32
Breaks: 17m total
Net observed time Teff= 27m= 0,45h
________________________________________________________________________
_________________________________________________________________
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