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This page was last modified on June 1, 2001 by Carl Johannink and Casper ter Kuile |
Leonids 2000 : Impressions and Results
De Bilt, Chaam and Limburg / Brabant, the Netherlands
DMS-members observing the Leonids 2000
Impressions 16/17 Casper ter Kuile, De Bilt, the Netherlands Visual 16/17 Arnold Tukkers, De Bilt, the Netherlands Visual 16/17 Jos Nijland, Chaam, the Netherlands Impressions 17/18 Casper ter Kuile, Limburg, the Netherlands Photo-impressions Casper ter Kuile, De Bilt, the Netherlands Photo-impressions Robert Haas, Chaam, the Netherlands Photo-results Leonid 2000 photo results Last updated: 1 june 2001
Leonids 2000 : Impressions 16/17
by Casper ter Kuile, De Bilt, the Netherlands
DMS-members Arnold Tukkers, Rita Verhoef, Ben Kokkeler, Jacob Kuiper and Casper ter Kuile observing the Leonids 2000
Hi to all!
The Leonids 2000 have started very succesfully in the Netherlands! A cold front passed the country in the night of 16/17 november. At about 22 UT the sky cleared in the western part of the country. At about 0 UT the sky cleared in the middle part of the country. Finally at the end of the night the frontal zone passed the eastern part of the country. Sky conditions in the clean and dry air after the front proved to be extremely well! Many thanks go the meteorologist Jacob Kuiper who guided us to the best observing locations available!
Members of the Dutch Meteor Society do not have observed any significant enhanced Leonid activity so far duri ng 16/17 november 2000. Observers include Arnold Tukkers, Rita Verhoef, Ben Kokkeler, Jacob Kuiper and Casper ter Kuile at De Bilt and Jos Nijland, Robert Haas, Sietse Dijkstra, Dianna Dijkstra and Remco Scheepmaker at Chaam. This observing period is from about 0 UT till about 4h30m UT. Sky conditions are excellent after the passage of a cold front.
Some minutes before 6 UT members of the Dutch Meteor Society observed 2 big Leonid fireballs one of -8 the other of -10. Nautical twilight started at 5h45m. Team Jos Nijland, Robert Haas, Sietse Dijkstra, Dianna Dijkstra, Remco Scheepmaker observed the two fireballs while still at their observing location near the Dutch / Belgian border. Jacob Kuiper and Casper ter Kuile observed these fireballs while already at Jacobs home through the window.
Clear Skies!
Casper.
Leonids 2000 : Visual Results 16/17
by Arnold Tukkers, De Bilt, the Netherlands
DMS-members Arnold Tukkers, Rita Verhoef, Ben Kokkeler, Jacob Kuiper and Casper ter Kuile observing the Leonids 2000
Results of Arnold Tukkers, member of the Dutch Meteor Society.
Place : de Bilt (in the middle of the Netherlands near Utrecht). Teammembers: Casper ter Kuile, Rita Verhoef, Ben Kokkeler, Jacob Kuiper and Arnold Tukkers. Time : 0.45 - 5.15 UT T-effective: 4.30 h Lm : 5.2 later drop down to 4.8.All the teammembers saw a higher activity round 04.30 - 05.15. There was one bright meteor about 01.00, low in the east. I thought it was a bright laserlight. Casper en Jacob saw a bright Taurid meteor (great).
Period. [UT] T.eff Lm Leo Tau Spo 00.45 - 01.00 0.25 5.2 1 4 01.00 - 01.15 0.25 5.2 1 2 3 01.15 - 01.30 0.25 5.2 1 01.30 - 01.45 0 0 01.45 - 02.00 0 0 02.00 - 02.15 0.25 5.2 2 1 1 02.15 - 02.30 0.25 5.2 2 02.30 - 02.45 0.25 4.6 1 1 02.45 - 03.00 0.25 4.6 1 03.00 - 03.15 0.25 4.6 03.15 - 03.30 0.25 4.6 1 2 03.30 - 03.45 0.25 4.6 2 03.45 - 04.00 0.25 4.6 1 04.00 - 04.15 0.25 4.8 2 04.15 - 04.30 0.25 4.8 1 1 04.30 - 04.45 0.25 4.8 6 2 04.45 - 05.00 0.25 4.8 5 1 05.00 - 05.15 0.25 4.8 3 1 Magnitude Distribution Stream -4 -3 -2 -1 0 1 2 3 4 5 LEO 1 1 3 4 4 2 6 4 0 TAU 1 1 3 SPOR 1 1 2 10 7 3Arnold Tukkers
Leonids 2000 : Visual Results 16/17
by Jos Nijland, Chaam, the Netherlands
DMS-members Jos Nijland, Robert Haas, Wietse Dijkstra, Dianna Dijkstra and Remco Schoenmaker observing the Leonids 2000
Name: Jos Nijland Date: 16/17 november 2000 Site: Chaam (south of Breda), the Netherlands, 4g54m37s E , 51g29m12s N Period (UT) Teff Lm Leo Tau Spo Ntot 00.45-01.15 0,50 5,70 5 0 4 9 01.15-01.45 0,47 5,60 4 1 5 10 01.45-02.15 0,50 5,60 7 0 6 13 02.15-02.45 0,50 5,50 7 0 2 9 02.45-03.15 0,50 5,40 4 2 3 9 04.42-05.15 0,40 5,40 7 0 3 10 05.15-05.45 0,47 4,80 7 0 4 11 Total 3,34 5,45 41 3 27 71 Magnitude Distribution Flash -3 -2 -1 0 1 2 3 4 5 6 Ntot Leo 1 0 2 2 5 5 10 10 6 0 0 41 Tau 0 0 0 0 0 0 1 2 0 0 3 Spo 0 1 0 0 1 5 10 10 0 0 27 List of bright meteors which could have been photographed: Time (UT) Mv Str. Location ± 00.59.45 0 Leo North 01.00.12 -2 Leo Cep 01.31.35 0 Leo Ori 01.50.35 0 Leo± Ori 01.52.50 0 Leo Uma ± 02.03.45 0 Leo Umi 02.06.40 -1 Leo Umi 02.11.00 -2 Spo NNW 02.19.32 -2 Leo Cas 02.43.25 0 Leo Uma 02.56.55 1 Leo Ori-Tau 04.47.05 -1 Leo Cas 04.58.30 0 Leo Uma 05.12.30 ? ? Flash 05.17.28 0 Leo Uma 05.25.20 0 Leo Uma 05.45.10 -4 Leo East ± 05.56.00 -8 Leo? NNW ± 06.04.00 -10 Leo? NNW Best wishes, Jos Nijland
Leonids 2000 : Impressions 17/18
by Casper ter Kuile, Limburg / Brabant, the Netherlands
DMS-members Jos Nijland, Robert Haas, Jacob Kuiper and Casper ter Kuile observing the Leonids 2000
Hi to all!
Oh what a night!! It's hard to express our feelings in words. It soon became clear (..) to us the weather turned out to be unfavourable in the Netherlands. Very cloudy weather with showers and some small spots in between. Almost impossible to carry out multistation photo- and video-observations. For this kind of observations one needs large, > 200 km wide, non-obscured clear skies. That seemed to be far from reality. Having this kind of nearly unpredictable weather we put all efforts in observing the 03:44 UT peak. We (Jacob Kuiper, Jos Nijland, Robert Haas and I accompanied with five observers of the "Stichting J.C. van der Meulen") decided to wait until the very latest moment.
So we started our Leonid chase from location De Bilt at 02:00 UT and first went, together with Jacob Kuiper) to the Royal National Weather Service (KNMI), which is very nearby, to have the very latest weatherinformation which should guide us to the correct location. The weathersituation still proved to be very tricky and hard to forecast. Jacob adviced us to head for the German border near Oberhausen / Venlo. At around 4 UT we stopped our chase for the Leonids in the middle of the province of Limburg along the German border. In some small holes in de cloudcover we noticed nothing extraordinary.
Driving back home we were very lucky to meet a much larger hole in de cloudcover after a heavy rainshower. We immediately stopped at a parking place halfway Limburg and the city of Eindhoven. While we get out of the car we observed two bright Leonids! We walking behing a wall which marked the parking place and from that location we observed many bright Leonids although twilight already had started! There was undoubtedly strong enhanced activity of the Leonids. Alas: because of the many, many clouds we were not able to carry out any usefull observations, visual, photo or video.
Precise data will be supplied by our DMS members who observed the Leonids from Portugal and Spain. Carl Johannink, Koen Miskotte and Marco Langbroek observed from Almodovar in Portugal. Klaas Jobse, Jaap van 't Leven and Peter Bus observed the Leonids from Faro in Portugal. And Hans Betlem and team observed the Leonids from a mobile locations somewhere in Spain.
In the meantime the DMS-website at "http://www.dmsweb.org" has been fully updated and now contains the very latest observing data from many DMS-members.
Best wishes,
Casper.
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This page was last modified on June 1, 2001 by Carl Johannink and Casper ter Kuile |