Meteors

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Meteor observations: 1983

Date T.eff LM SHO SPO Total 1 Total 2 Nr. Session Loc
Fireballs
(-3>)
Remarks
03/04-04 4,92 4,9 0 9 9 233 20 HAR -
29/30-07 3,58 5,6 13 4 17 250 21 HAR -4 CAP
30/31-07 2,23 5,1 2 5 7 257 22 HAR -
15/16-08 6,62 5,9 35 27 62 319 23 HAR -
18/19-08 2,65 5,4 3 10 13 332 24 HAR -
28/29-10 3,22 5,9 3 6 9 341 25 HAR -
29/30-10 3,62 6,0 7 13 20 361 26 HAR -
03/04-11 4,55 5,5 8 13 21 382 27 HAR -
07/08-11 5,60 5,9 15 23 38 420 28 HAR - Earthquake
08/09-11 0,98 4,8 0 5 5 425 29 HAR -
11/12-11 3,05 5,6 7 14 21 446 30 HAR -
10/11-12 1,92 5,0 6 3 9 455 31 HAR -
11/12-12 3,11 5,8 17 2 19 474 32 HAR -
12/13-12 3,04 5,6 70 10 80 554 33 HAR -
13/14-12 1,63 4,5 20 3 23 577 34 HAR -4 -3 GEM
14/15-12 7,15 6,1 191 35 226 803 35 HAR -5,-4,-3 GEM, -6 SPO
16 sessions 57,87 - 397 182 579 803 35 1 7

The year 1983 in images and words
This year I did my duty service in the Dutch army. I had three holidays: during the Perseids, Taurids and Geminids. We had our best Perseid campaign ever from the water tower near Harderwijk. The nights 3/4, 4/5, 7/8, 8/9, 9/10, 11/12, 12/13, 14/15, 15/16 and 18/19 August were mostly clear. We saw as a group more than 1500 meteors and photographed 31 meteors.


Picture 1: "armed and ready" for the night! Bauke is inspecting our tape recorder.


Picture 2: Koen between the camera array's.


Picture 3: Koen "at work".


Picture 4: Delphinusteam in action: fltr: Olaf Miskotte, Richard Buijs, Koen Miskotte, Jan Henk Maneschijn and Klaas Jan Homsma.


Picture 5: other Delphinus members in 1983. Fltr: Arjen Grinwis, Richard Buijs, Bauke Rispens, Klaas Jan Homsma and Jan Henk Maneschijn.


Picture 6: Waiting on clear weather: playing cards just under the roof of the watertower...


Picture 7: Koen is inspecting negatives on meteors and Arjen is listening to the tape recorder with our visual observations.

This year it was the last time I operated the camera 's during the Perseids and other campaigns. I always felt I was more an visual observer than a photographic observer. That did not mean that no more meteors were photographed during the campaigns. Early 1984, several setups were built with cameras that could work automatically without human input.
The Taurids yielded six clear nights, but were disappointing because 1983 was not a Taurids/Asher year. During Asher years Earth moved throught denser parts of the meteorstream, which results in higher counts of (mostly) bright Taurids.


Picture 8: during the night of 7/8 november 1983 I was observing the Taurids. Suddenly the roof of the watertower began to shake, it was an earthquacke in Belgium. This is a report in a Dutch newspaper.

The Geminids were a huge succes! I could see them for the first time under good conditions. Unfortunately, the maximum night clouded out after one hour but fortunately the following night was crystal clear. I counted during 6 hours 225 meteors, a personal record for me at that time. That night I saw four fireballs, the best one a sporadic fireball with a bright terminal flash (magnitude -7).


Figure 1: plottings of Geminids observed in the night 12/13 december 1983.


Figure 2: plottings of a -5 Gemind and a -7 sporadic fireball.

 


Year