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Meteor observations: 1980

Date
T.eff
LM
SHO
SPO
Total 1
Total 2
Nr. session
Loc

Fireballs
(-3>)

Remarks
12/13-04
1,87
5,3
0
4
4
4
1
Har
-
04/05-05
1,55
4,9
0
2
2
6
2
Har
-
06/07-09
5,52
6,1
0
18
18
24
3
Har
-
03/04-10
3,43
5,7
4
14
18
42
4
Hav
-
04/05-10
2,90
5,5
0
11
11
53
5
Hav
-
Moon, Venus and Regulus occulattion
18/19-10
0,23
3,5
1
0
1
54
6
Har
-
01/02-11
1,92
5,6
4
5
9
63
7
Har
-
13/14-12
2,27
5,2
38
2
40
103
8
Har
-
1e Geminids
8 sessies
19,69
-
47
56
103
103
8
2
-

Locations:
HAR=Harderwijk, the Netherlands (52.2 north, 5.4 east)
HAV=Havelte, the Netherlands (52.5 north, 6.0 east)

The year 1980 in words and pictures
In 1979 I joined Werkgroep Meteoren (Workinggroup of Meteors) of the KNVWS. As a member you received in those days the Meteor Bulletin, a magazine compiled by Ben Apeldoorn. With great pleasure I read reports from groups of meteor observers near Winterswijk and Denekamp. Especially the reports of Carl Johannink et al from the Werkgroep voor Sterrenkunde from Denekamp made me very excited. This club was for me a real example of what I had in mind in Harderwijk: a group of friends who regularly observing meteors.
Following a meeting of the WGM on March 21, 1980 I made plans to organise a group meteorobservers in Harderwijk. On May 16, 1980, I founded the group, which besides eight people including Reyer Klopman and Arjen Grinwis figured. There was a high turnover of participants in the first two months. When we observed the Perseïds in August 1980 the following persons were members of the group: Arjen Grinwis, Reyer Klopman, Robert Haas, Rispens Bauke and Koen Miskotte. The name of our club was Delphinus. Why Delphinus? Delphinus is the Latin name of Dolphin. And in Harderwijk we have a Dolphinarium and Delphinus is also the name of a small constellation. So here you have it! In those day’s fellow observers from groups in the Netherlands often reffered to us as Delphinians…...


Picture 1: Logo of team Delphinus designed by Robert Haas.

Together with my father I built the first camera battery consisting of four T-22 Lubitel camera's. Unfortunately, de sector gave too much vibration so blurred pictures emerged.


Picture 2: Camerabattery consisting of four Lubitel T-22 6x6 camera's

In June 1980, Robert Haas and I had a 10 day visit to the Public Observatory Twente. There we met the observers from the WVS, amongst them Carl Johannink, Romke Schievink, the brothers De Jong van Lier, Andre Mulder and Ralf Kluitenberg. Cloudy nights were used in De Hiel, the local pub in Denekamp.
The night of augutus 10, 1980 became the first official observing night of the Group Delphinus. This site were we did our first observations was an old overgrown garbage dump in the woods near Harderwijk. That night we photographed our first meteor, a Perseide of -6. It was captured simultaneously with the meteorgroup of Buurse (Casper ter Kuile et al).


Picture 3: Our first ever photo of a meteor: a fine magnitude -6 Perseid

Later on that year I could observe the Geminids for the first time. Wow, what a great meteorshower.
This year we used my father's contacts with the former Waterleiding Maatschappij Gelderland (a local watercompanie),to get a permission to observe meteors from the roof of a water tower (15 meters high) in the woods near Harderwijk. We got the permission, but after a roof renovation planned in 1981.


Picture 4: 2 Geminids captured during the night 13/14 december 2011.


Picture 5: The early morning of Oktober 5, 1980 shortly after the Venus/Regulus occulation.


Picture 5: The early morning of Oktober 5, 1980 shortly after the Venus/Regulus occulation.

 

 

 

Year