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(meteorobs) IMO METEOR SUMMARY REPORT, 12/13-Dec-2000, GRALE




Here is the first full report I will have gotten into IMO and NAMN this year!

I'm posting this long form to the entire 'meteorobs' list, partly to stimulate
some questions, and partly as an encouragement to myself and others (you know
who you are!), to complete all the OTHER full IMO reports from our observing
sessions during this past year...

Note that the highlights of last night for me were both the unexpectedly high
pre-midnight activity from the Geminids, and a lovely -3.5 GEM terminal-burst
fireball, low in the WSW at 6:37UT, which changed colors from yellow to lovely
blue-white just prior to its terminal burst.


If anyone on our 'meteorobs' list has any questions about the following report
(e.g., "What the heck do all those NUMBERS and CODES mean, Lew???"), please DO
NOT hesitate to post such questions to the 'meteorobs' list at:

        meteorobs@jovian.com

BTW, soon to follow will be the first *EVER* IMO Summary Report from my fellow
Boston-area meteor observer, Rachel Aubuchon, for the Leonid outburst of 17/18
November! I'll be sending that along some time before the coming weekend. And
at some point very soon after that, my own Leonid outburst Final Report, as
well as Rachel's IMO Report on last night's activity will follow.

Clear skies and many meteors!
Lew Gramer ("GRALE")

================================================================================
IMO METEOR SUMMARY REPORT
================================================================================

Observer's Name: Lewis J. Gramer        IMO Observer Code: GRALE
EVENING Date (UT): 12-Dec-2000          IMO Showers Active that Date:
MORNING Date (UT): 13-Dec-2000          COM,GEM,XOR,HYD,MON,PUP
Session Start Time (UT): 03:10
Session End Time (UT):   07:49

Observing Site Location: ATMs Clubhouse, Westford MA USA        IMO Code: 25235
Site Latitude: 42:36:32 N, Longitude: 071:29:39 W, Site Elevation: 86 m

Observing Methods ("X" all that apply):
 =Manual (pencil/paper)                 X=Tape Recorder          =Plot Charts
 =Other - describe here:

Showers Observed (Enter all IMO 3-letter or other shower mnemonics you used):
Shower Name     Geminids        Sigma Hydrids   Monocerotids    Coma Berenicids
3-letter Code   GEM             HYD             MON             COM
Longitude       111             128             103             171
Declination     +33             +02             +08             +26
Radiant  Size   5               5               5               5
Right Ascen.    07:24           08:32           06:52           11:24


Summary of All Meteor Data for the Session

# Start End     CFV     Teff  LM    F      GEM  HYD  MON  COM  Spor TOTAL
1 03:10 04:25   03h+35  1.22  5.18  1.000  15   0    0    0    4    19
2 04:26 06:33   03h+35  1.21  5.14  1.000  26   1    1    0    12   40
3 06:34 07:49   04h+30  1.20  4.91  1.041  23   2    1    0    12   38
                                                                
TOTALS                  3.66  5.08  1.013  64   3    2    0    28   97
Average Magnitudes                         1.98 2.00 3.25 0.00 2.64 2.20



================================================================================
IMO Visual Meteor Report - Lewis J. Gramer (GRALE), Night of 12-Dec-2000

LIMITING MAGNITUDES                     CLOUDS / OBSTRUCTIONS
        Time    Field   Count   LM      Start   End     % Obscured      Duration
        03:10   2       8       5.4     06:54   07:14   5%              00:20
        04:15   2       7       5.1     07:32   07:43   10%             00:11
        04:15   18      7       5.1     07:44   07:49   15%             00:05
        04:45   2       6       5.0
        04:45   18      7       5.1
        05:51   2       8       5.4
        05:51   8       7       5.1
        06:51   8       6       4.8
        06:51   17      9       5.1
        07:21   8       6       4.8
        07:21   2       6       5.0
        07:49   8       6       4.8

BREAKS
Start   End     Duration                        Breaktime
05:00   05:51   00:51                           Per Period
                                        Period 1        00:00
                                        Period 2        00:51
                                        Period 3        00:00

Deadtime                0:00:05  / meteor       0:00:45  / plot
                Total - logs plus plots         # Plots Per Period
                Period 1        0:01:35                 0
                Period 2        0:03:20                 0
                Period 3        0:03:15                 0


================================================================================
IMO Visual Meteor Report - Lewis J. Gramer (GRALE), Night of 12-Dec-2000

MAGNITUDE DISTRIBUTIONS
        -4     -3     -2     -1     0      1      2      3      4      TOTAL
GEM     0.5    0.5    1      1      4      10     25     14.5   7.5    64
HYD     0      0      0      0      0      1      1      1      0      3
MON     0      0      0      0      0      0      0      1.5    0.5    2
COM     0      0      0      0      0      0      0      0      0      0
Spor    0      0      0      1      0      2.5    4      17.5   3      28
TOTAL   0.5    0.5    1      2      4      13.5   30     34.5   11     97


TRAIN DATA - Totals

Per Shower Train Data
Meteors with trains:            9
Percentage with trains:         9%

        GEM     HYD     MON     COM     Spor    TOTAL
Number  5       0       1       0       3       9
Percent 8%      0%      50%             11%



GENERAL COMMENTS ABOUT SESSION - Use as many lines as needed below this one:

Observed with fellow IMO meteor recorder Rachel Aubuchon; new meteor recorders
 Aaron Price and Mike Aramini; casual observers Steve Mock, Chris Akana & Megan.
Hot & sour soup graciously provided by Mr. Aramini, Nutty Buddies by Mr. Mock!

Temperature during session began at 25oF and ended at 22oF.
Wind chill during session began at -10oF and ended at 15oF!
Winds during session began at 25mph G30mph, ended at 5-15mph.


================================================================================

INDIVIDUAL METEOR DATA

Time      Mag   Spd     Shwr    Constel DCV     Color   Trn     Comments
3:12:00   1.5   3       GEM     Cas     20
3:18:00   3     3       GEM
3:29:00   4     3       GEM     Ari     10
3:30:00   -1    3       GEM     Ari     20      org     +
3:32:00   0     3       GEM     Tau             blu     +
3:34:00   4     3       GEM     Ari     10
3:37:00   3     3       Spor    Lac     40
3:41:00   1     3       GEM     Cep     30
3:49:00   3     3       GEM     And     20
3:53:00   -2    3       GEM     Tau-Psc 20
4:02:00   2.5   3       GEM     Cas     40
4:05:00   2     3       GEM
4:06:00   2     3       GEM
4:09:00   4     3       GEM     And     30
4:16:00   3     3       Spor    Ari     20
4:16:00   3     5       Spor    Cam     40
4:17:00   1     3       GEM     Ari     20      yel     +
4:22:00   2     3       GEM
4:24:00   2     4       Spor    Cet     20
4:26:00   2     3       GEM     Ari     10      yel
4:29:00   0.5   3       GEM     Tau-Eri 30                      Began mag 2.
4:33:00   1     5       HYD     Tau     30
4:36:00   2.5   3       GEM
4:38:00   3     4       Spor    Cet     30
4:40:00   1     1       Spor    Peg     60      org             Gorgeous slow!
4:44:00   0     3       GEM                     blu-whi
4:46:00   2     3       Spor    Cas     30
4:48:00   1     3       GEM                     yel
4:50:00   2     3       GEM
4:50:00   1     3       GEM
4:51:00   1     3       GEM
4:53:00   3     ?       Spor                    yel
4:53:00   1.5   3       GEM     Eri     40
5:00:00   3.5   4       Mon     Tri     10
5:53:00   3     3       Spor
5:53:00   2     3       GEM                     yel             10o from radiant
5:56:00   2     3       GEM
5:58:00   3     5       Spor    Lep     40              1
5:59:00   3     3       GEM     Ari     30
6:00:00   3     3       GEM     Eri     30
6:03:00   2     3       GEM             10
6:04:00   1.5   3       GEM             20
6:04:00   3     4       Spor    Cet-Eri 30
6:05:00   4     3       GEM     Eri     10
6:08:00   2     3       GEM     Tri     20
6:09:00   4     3       GEM     Tri     20
6:10:00   3     3       GEM     Per     30
6:10:00   3.5   3       GEM     Tri     10
6:10:00   2     3       GEM     Ori     30
6:11:00   0.5   3       GEM     Aur     40      yel
6:12:00   3     4       Spor    Tau
6:18:00   3     3       GEM
6:18:00   4     4       Spor
6:20:00   3.5   3       Spor    Ari     30
6:22:00   -1    3       Spor    CMa-Col 60
6:26:00   1.5   3       GEM     Lep     40
6:27:00   2.5   3       GEM     Per     20
6:27:00   4     3       Spor    Tau
6:33:00   2     3       GEM
6:34:00   3     3       GEM
6:35:00   3     4       Spor    And     30
6:37:05   -3.5  3       GEM     Per-Ari 60      yel-blu 0.5     Began mag 0,
                                                                changed color.
6:38:00   4     3       GEM
6:38:00   3     3       GEM
6:39:00   1.5   3       Spor    And     30
6:41:00   2     3       GEM
6:43:00   2     3       GEM     Peg     10
6:47:00   3     5       Spor    And     10              1
6:48:00   2.5   3       Spor    Tau-Cet 20
6:53:00   3     4       Spor    Tau     10
6:56:00   2     3       GEM     Ori     40
6:58:00   2.5   3       GEM     And     30
7:00:00   3     3       Spor    And     30
7:00:00   4     3       GEM     Ari     10
7:04:00   3     3       Spor    Eri
7:04:00   1     3       GEM     Peg     50
7:07:00   3     3       GEM     Cet     30
7:11:00   0     3       GEM     Per     20      grn     +       Brt lime green!
7:11:00   2     3       Spor    Ori     40
7:13:00   2     3       GEM     Per     20
7:15:00   1.5   3       GEM     Mon     40
7:17:00   3     3       GEM     Per     10
7:22:00   2     3       GEM     Ori
7:25:00   3     3       GEM     Per     10
7:26:00   2     3       GEM     Cas     20                      Within 1 sec!
7:26:00   2     3       GEM     Cas     10                      Within 1 sec!
7:27:00   3     3       GEM
7:27:00   2     3       GEM
7:28:00   1.5   3       GEM     Per     0
7:29:00   3     3       Spor
7:29:00   3     3       Spor
7:32:00   2     5       HYD     Umi     40
7:34:00   3     5       HYD     Pup     20
7:41:00   3     3       MON     Mon                     0.5     5o from radiant!
7:44:00   2     3       GEM     And     10
7:46:00   3.5   3       Spor    Hyd     10
7:46:00   1     2       Spor    CMa-Ori 30      red-org +
7:49:00 ** END **
================================================================================

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