[Prev][Next][Index][Thread]
(meteorobs) NAMN VISUAL SUMMARY REPORT, Aug 10/11 1997, GRALE
NAMN VISUAL SUMMARY REPORT
DATE: Aug 10/11 1997 BEGIN: 0350UT END: 0630UT
OBSERVER : GRALE (Lewis J. Gramer)
LOCATION : Long: 71o 30' 30" W; Lat: 42o 37' 10" N; Elev: 146m
City & State: MIT Haystack Observatory, Millstone Hill, Westford, MA
RECORDING METHOD: Tape Recorder
-----------------------------------------------------------------------
OBSERVED SHOWERS: Use 3 letter Code; position; RA/DEC; name
KCG NIA CAP SDA NDA SIA PER PAU
284 +58 318 -07 319 -06 350 -13 336 -05 340 -14 045 +58 353 -26
18:56+58 21:12-07 21:16-06 23:20-13 22:24-05 22:40-14 03:00+58 23:32-26
Kappa N Iota Alpha S Delta N Delta S Iota Perseids Piscis
Cygnids Aquarids Capric Aquarids Aquarids Aquarids Austrin
-----------------------------------------------------------------------
-----------------------------------------------------------------------
OBSERVING PERIODS: (0 = none seen; / = shower not watched)
PERIOD(UT) FIELD Teff F LM PER KCG NDA SDA NIA SIA CAP PAU SPOR
-----------------------------------------------------------------------
0350-0500 21h+45 1.10h 1.00 5.62 8 1 1 0 1 1 2 0 5
0500-0630 21h+45 1.13h 1.00 5.28 13 0 2 1 0 0 0 1 8
TOTAL: 21 1 3 1 1 1 2 1 13
-----------------------------------------------------------------------
-----------------------------------------------------------------------
MAGNITUDE DISTRIBUTIONS:
SHOWER -7 -6 -5 -4 -3 -2 -1 0 +1 +2 +3 +4 +5 +6 TOTAL
KCG 0.5 0.5 1
NIA 1 1
CAP 1 1 2
SDA 1 1
NDA 1 2 3
SIA 1 1
PAU 1 1
PER 1 1 2 4 11 2 21
SPOR 2 1 1.5 4 1 3 0.5 13
Total: 0.5 0.5 3 2 4.5 11 16 6 0.5 44
"SPORADIC" (SPOR + NON-IMO) MAGNITUDE DISTRIBUTION: (see Remarks)
SHOWER -7 -6 -5 -4 -3 -2 -1 0 +1 +2 +3 +4 +5 +6 TOTAL
"UPG" 0.5 0.5 1
"AUM" 0
SPOR 2 1 1 3.5 1 3 0.5 12
Total: 2 1 1.5 4 1 3 0.5 13
-----------------------------------------------------------------------
-----------------------------------------------------------------------
SKY OBSCURED:
PERIOD 1 k = 0.000
%0 From: 0350UT To: 0500UT
PERIOD 2 k = 0.009
%0 From: 0500UT To: 0630UT
-----------------------------------------------------------------------
-----------------------------------------------------------------------
PERIOD 1 PERIOD 2
DEAD TIME: 00h04m 00h04m
BREAKS : 00h18m 0517-0535
TOTAL : 00h04m 00h22m
MEAN MAGNITUDES
SPOR = +1.92
PER = +2.38
NDA = +2.67 (sample of 3 meteors)
SDA = +4.00 (sample of 1 meteor)
NIA = +2.00 (sample of 1 meteor)
SIA = +1.00 (sample of 1 meteor)
CAP = +2.50 (sample of 2 meteors)
KCG = -3.50 (sample of 1 meteor)
PAU = +3.00 (sample of 1 meteor)
[Non-IMO:
"AUM" = N/A (sample of 0 meteors)
"UPG" = +1.50 (sample of 1 meteor)
SPOR = +1.96 (sample of 12 meteors)
[
-----------------------------------------------------------------------
-----------------------------------------------------------------------
LIMITING MAGNITUDE:
STAR STAR
TIME AREA COUNT LM (mins in effect)
-----------------------------------------------------------------------
0350 13 10 5.7 25
0350 14 15 6.1 25
0430 1 10 5.3 30
0430 14 12 5.7 30
0500 1 10 5.3 45
0500 14 11 5.5 45
0600 7 9 5.2 45
0600 14 9 5.2 45
0630 6 6 5.4 15
0630 7 9 5.2 15
MEAN LIMITING MAGNITUDE: 5.43
-----------------------------------------------------------------------
-----------------------------------------------------------------------
METEOR DATA
# TIME(UT) MAG SPEED COLOR SHOWER TRAIN (sec) DCV CONST (*)
-----------------------------------------------------------------------
1 0356 2 2.5 SPOR 40 Uma
2 035835 -1 2 SPOR 50 Sgr
3 0403 2.5 3.5 PER 20 Oph
4 0404 2 2.5 NDA 20 Her
5 0408 3 4 PER 30 Cep
6 0412 3.5 3 SPOR 0 Cyg
7 0422 4 4 PER 10 Her (*)
8 0423 2 3.5 PER 10 Dra
9 0423 3 2 CAP 10 Cyg
10 0424 2 1.5 CAP 40 Cap
11 0430 2 3 PER 20 Dra-Cep
12 0431 3 4 PER 30 Peg
13 0435 0 3 Yel SPOR 20 Her-Oph
14 0444 2 2.5 NIA 10 Dra
15 0447 3 4 PER 10 Cyg
16 0447 1 2 Pal Grn SIA 20 Cyg (*)
17 045149 -3.5 2.5 KCG 50 CrB
18 0457 1 4 PER 50 Cas
19 0459 2 3 SPOR 20 Lac
20 0500 1 4 Blu PER 30 Cap (*)
21 0503 3.5 4 PER 10 Del
22 0504 0 4 Whi-Grn PER 4.0 Pal Grn 30 Dra
23 0505 3 4 PER 10 Cyg
24 0506 3 3 NDA 20 Cyg-Cep (*)
25 0509 1 3 Whi-Grn SPOR + 10 Vul
26 0511 3 4 PER 20 Aql (*)
27 0540 3 4 PER 20 Peg
28 054330 -1 0 Org-Grn SPOR 10 Cyg (*)
29 0543 4 3.5 SDA 10 Cyg
30 054555 -1 4 Whi PER 1.5 30 Peg
31 0546 2 4 PER 30 Aql (*)
32 0549 3 4 PER 10 Lyr-Cyg
33 0557 4.5 3 SPOR 10 Cyg
34 0605 2.5 3 SPOR 30 Aql-Her
35 0606 3.5 4 PER 30 Cas
36 0609 1.5 4.5 SPOR 30 Cet (*)
37 0610 2 3 SPOR 20 Lyr
38 0612 4 3 SPOR / /
39 0616 3 4 PER 20 Peg
40 0617 3 3 NDA 10 Cyg
41 0619 4 3 SPOR 0 Cyg
42 0620 3 4 PER 20 W And
43 0627 2.5 3.5 PER 20 E Peg
44 0629 3 2 PAU 0 Cyg->Cep (*)
## 0630 ENDED SESSION IN HEAVY HAZE
"+" - Train duration of "+" indicates a wake - too short to measure.
(*) - Meteors marked by asterisks have additional data under Remarks
-----------------------------------------------------------------------
-----------------------------------------------------------------------
VELOCITY SCALE (SPEED):
0 = Stationary
1 = Very Slow
2 = Slow
3 = Medium
4 = Fast
5 = Very Fast
-----------------------------------------------------------------------
-----------------------------------------------------------------------
REMARKS: Seeing throughout session was Excellent (9 of 10).
All meteors were observed in a haze which introduce about 1 magnitude
attenuation at the zenith, and an additional 0.3 magnitude attenuation
per 20 degree decrease in elevation below that.
Dead time of 10 seconds was deducted per recorded meteor.
Meteor #7 was 25 degrees long and 70+ degrees from the PER radiant.
Meteor #16 noted as a SIA based on path alignment and speed, although
it was 30o long and only 50o from the radiant. This unusual meteor
began at mag 3, brightened to mag 1 one third of the way along its
path, then dimmed briefly to mag 4 before brightening AGAIN to mag 2!
Meteor #20 noted as "electric blue" in color. This was another SHORT
shower association, being just 15o long but a full 60o from radiant.
Meteor #24 was 25 degrees long and 60 degress from the NDA radiant.
Meteor #26 was 25 degrees long and *90* degress from the PER radiant.
Meteor #28 was only 0.5 degrees long, making speed estimate impossible.
Meteor #31 was 30 degrees long and *100* degress from the PER radiant.
Meteor #36 was noted as a possible member of the non-IMO shower "UPG",
(Upsilon Pegasids) based on projection, distance, and putative speed.
Meteor #44 was 30 degrees long and *100* degress from the PAU radiant.
<END OF REPORT>