Meteors

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Meteor observations: 1984

Date T.eff LM SHO SPO Total 1 Total 2 nr.
Sessions
Loc Fireballs (-3>) Remarks
04/05-01 4,02 5,7 12 14 26 829 36 HAR ~
03/04-03 1,87 5,0 0 5 5 834 37 HAR ~
23/24-03 2,25 5,4 0 8 8 842 38 HAR -
31/01-04 2,50 5,8 6 7 13 855 39 HAR -
24/25-04 2,98 5,8 9 13 22 877 40 HAR -
28/29-04 3,80 5,7 2 10 12 889 41 HAR -
29/30-04 5,80 5,7 3 23 26 915 42 HAR -
21/22-05 1,00 4,5 0 3 3 918 43 HAR -
31/01-06 2,08 4,5 0 3 3 921 44 HAR -
05/06-06 1,57 4,9 0 8 8 929 45 HAR -
17/18-06 2,08 4,8 0 2 2 931 46 HAR -
18/19-06 2,35 5,3 3 4 7 938 47 HAR -
21/22-06 2,43 5,3 0 6 6 944 48 HAR -
25/26-06 3,20 5,4 5 12 17 961 49 HAR -
31/01-06 2,79 5,7 3 17 20 981 50 HAR -
07/08-07 1,00 5,2 1 8 9 990 51 HAR -
23/24-07 0,33 5,9 1 2 3 993 52 PUI -
24/25-07 5,31 6,4 29 34 63 1056 53 PUI -3 PER 1000 th meteor!
25/26-07 5,83 6,4 42 66 108 1164 54 PUI -4 CAP, -6 SPO
26/27-07 5,63 6,5 52 87 139 1303 55 PUI -4 CAP, -8 CAP
27/28-07 1,00 6,1 2 6 8 1311 56 PUI -
28/29-07 5,85 6,8 81 115 196 1507 57 PUI -
29/30-07 5,56 6,8 109 85 194 1701 58 PUI -6 PER
30/31-07 5,96 6,7 109 92 201 1902 59 PUI -5 CAP, -4 SAG
01/02-08 5,52 6,8 105 111 216 2118 60 PUI -
02/03-08 6,25 6,8 126 65 191 2309 61 PUI -
03/04-08 5,03 6,1 97 63 160 2469 62 PUI -
04/05-08 1,00 6,1 6 4 10 2479 63 PUI -
08/09-08 0,67 5,1 2 1 3 2482 64 HAR -
10/11-08 3,72 5,1 32 16 48 2530 65 HAR -
17/18-08 2,03 6,1 12 7 19 2549 66 HAR -
19/20-08 2,57 6,1 10 6 16 2565 67 HAR -
20/21-08 4,03 6,2 16 25 41 2606 68 HAR -
21/22-08 1,17 5,4 2 4 6 2612 69 HAR -
22/23-08 2,85 6,2 18 10 28 2640 70 HAR -
01/02-09 1,00 5,3 0 6 6 2646 71 HAR -
03/04-10 3,67 6,1 9 36 45 2691 72 HAR -4 TAU
27/28-10 7,92 6,1 37 84 121 2812 73 HAR -
02/03-11 5,40 6,1 19 48 67 2879 74 HAR -4 SPO
03/04-11 5,82 6,5 24 91 115 2994 75 HAR -
30-01-12 0,87 6,0 3 4 7 3001 76 HAR -
01/02-12 2,42 6,1 7 26 33 3034 77 HAR -
02/03-12 3,72 6,3 8 53 61 3095 78 HAR -
13/14-12 5,43 5,4 126 25 151 3246 79 HAR -4 GEM
14/15-12 6,72 6,2 44 28 72 3318 80 HAR -
18/19-12 2,73 6,2 9 23 32 3350 81 HAR -
26/27-12 0,95 5,4 0 6 6 3356 82 HAR -
47 sessions 158,68 1181 1372 2553 3356 82 2 11

Locations:
HAR = Harderwijk, the Netherlands (52.2 north, 5.4 east)
PUI = Puimichel, France (44.0 north, 6.1 east)

The year 1984 in images and words
Despite the poor (moon) conditions around the major meteor showers in 1984, it was still a great year for meteor observations. This year was a huge succes due to observations made in southern France, and also to a large number of clear nights in Harderwijk. And also the quality of our observations became better and better because of the high numbers of nights we observed meteors.


Picture 1: walhalla for meteor observers: Puimichel, Provence, France.

Successful observation of were done during the Perseids, Orionids, Taurids and Geminids. In september 1983 I read an article in Zenit about observations done in Puimchel, southern France, written by the Flemish amateur astronomer Leo Aerts (a renowned astrophotographer from Belgium). The article was called: Dream Nights in the Provence. Leo visited Puimichel for a while on vacation. There he was aguest at the holliday observatory of Dany Cardoen and Arlette Steenmans.


Picture 2: our observing location, the 406 mm Newton of Dany Cardoen is also visible.


Picture 3: goupphoto of the team in Puimichel. Fltr: Carl Johannink, Marcel Lücht, Koen Miskotte and Bauke Rispens.

With the poor moonlight conditions in mind around August 12 (1984), Koen, Carl Johannink and Bauke Rispens start plan a journey to Puimichel late July/early August. Advantage of this southern location is that the radiants of the summer streams (Southern Delta Aquariids, Capricornids and Pisces Austrinids) are eight degrees higher in the sky than in the Netherlands. Also in Puimichel it is far more clear than in the Netherlands. In September 1983 I sent a letter to Dany and Arlette and soon we got a letter with our reservation. So this is the first DMS meteor campaign abroad.
In the moonlight-free period from July 22 to August 5 we stayed at the observatory. In that period we could observe during 10 crystal clear nights! Limithing magnitudes up to 6.8! The number of meteors that was observed was amazing, thanks to the high quality of the sky. The team was supplemented by Marcel Lücht and Rob Tille, and we saw more than 4000 meteors! Among them there were 8 fireballs, including a particularly beautiful Capricornid fireball of magnitude -8. This campaign exceeded our expectations whatsoever. According to Dutch standards, record numbers of Aquariids and Capricornids were seen. We had also an all sky camera with us. This was an automated Canon AV1 camera with winder and a Canon FD 4.0/17 mm wide angle lens. Bauke and his brother Jan built this setup for me. This system has photographed eight meteors, the best one a Perseid of magnitude-6. Unfortunately the beautiful Capricornide fireballs appeared (just) outside the field of view of the camera.


Picture 4: Perseid of magnitude -6 captured in the night 29/30 july 1984.


Figure 1: ZHR of the Capricornids in 1984.

This expedition was the first of several expeditions organised by Delphinus to Puimichel in 1985 and 1986. These expeditions were the forerunners of the bigger expeditions organised by the DMS to the Provence during 1990 Geminids and 1993 Perseids.
After I had observed from the Greek Island of Chios (july 2001) and Crete (july/august 2003) I realized that the Capricornids in 1984 had unusual activity with a ZHR of 10-12 compared to 5 normal and also that the average brightness was lower than normal.
This year I sold all second hand SLR camera's and bought some Canon AV-1 and a Canon T70. Especially the last camera combined with a commando back was ideal for meteor photography. You programmed the commandback and then everything runs automatically the rest of the night.
The weather in december 1984 was bad, but we had a 5 hour period with clear weather from Harderwijk so the Geminids could be observed. Despite the moon we still observed quite a number of Geminids. observation


Picture 5: Geminid of -8 captured on December 13, 1984. Camera; Canon T70, commandoback and Canon FD 8 mm F 5.6 circulair fish eye lens.


Picture 6: Geminid of -6 captured on December 13, 1984. Camera: Canon T70, commandoback and Canon FD 8 mm F 5.6 circulair fish eye lens.


Picture 7: automatic equipment during the Geminid 1984 campaign.


Picture 8: visual observers during the Geminids 1984. Fltr: Arjen Grinwis (...), Koen Miskotte and Bauke Rispens.

Year