Team Members Profile's
Drs. Marco Langbroek (born 15 April 1970) started astronomy
as a hobby at age 6 in 1976. In 1980, he joined the Dutch Youth Association
for Astronomy and build his first small telescope.
- His first serious attempt
at observing meteors was during the Perseids of 1986. In
1988, he joined the
- Dutch Meteor Society,
observing together with Peter Jenniskens at station
Meterik untill Peter left for NASA/Ames in late 1992.
Invited to participate in the famous campaign on the 1993
Perseids from Rognes, France, he was hooked by team
Delphinus. Currently, he and Koen Miskotte are the
foremost visual meteor observers of both DMS Delphinus as
well as the Netherlands.
- In daily life, he is a
professional archaeologist, graduated cum laude from
Leiden University in
- September 1998 on a
dissertation about the dispersal and ecological habitat
of humankinds earliest ancestors, a dissertation which
earned him the prestigeous 'W.A. van Es Prize'.
- He is (co-)author of 3
scientific meteor papers: co-author of a paper on the
1995 alfa Monocerotids in
- the Astrophysical Journal
479 (1997), 441; co-author of a paper on the Quadrantids
in Astronomy & Astrophysics 327 (1997), 1242; and
author of a paper on the 1996 Leonids in Meteoritics
Planetary Science 34 (1999), in press.
Most of his observational hours, usually some 60-70
effective hours per year, are spend in the 'off-season',
gathering data on little known streams and hunting for
the rare enigmatic meteor outbursts. To date, he has
observed 10 meteor outbursts of 6 different meteor
streams, including a number of unpredicted events, like
the 1996 June Lyrids and 1996 Ursids.
Robert Haas (born 26 January 1964) is a founding members
of Delphinus. He started astronomy as a hobby and soon became very interested
in astronomical photography. In 1976 he joined the Dutch Youth Association
for Astronomy. His first observation of meteors was during the Perseids
of 1978 and in 1980 he joined Koen Miskotte (a friend from school) in founding
The Delphinus Meteor Observation Team where a selected group of enthousiastic
members from the Dutch Youth Association for Astronomy could specialize
on observing and recording Meteors The group then existed of 5 members that
were regularly observing the major streams together. They spent a lot of
time building and developing new camera batteries. The Delphinus team was
the first (in 1984) to apply the Canon T70 automated camera's for controlling
camera arrays specially for meteor photography
Currently, he and Casper ter Kuile are the foremost innovators of new camera-techniques
in the DMS.
- In daily life, he is a
professional photographer, he graduated in Fotonica at
the school for fotonica and photography in 1985.
- He is now specialist in
the sales of digital video and photographic camera's.
Most of his results in observational campaigns are used
in the trajectory results of the DMS research and
He made it a sport gathering photographic data from the
rare enigmatic meteor outbursts, and then drives the team
for hundreds of miles to get to a clear weather spot.
He has observed and photographed several meteor outbursts
of different meteor streams, including the Perseids 1993,
the alfa Monocerotids in 1995 and the Leonids in 1995,
1996, 1997 and 1998.
Koen Miskotte (born 15 October 1962) the founding member
of Delphinus, was the first of a group of friends who was getting interrested
in observing meteors in 1977.
His first observations on record date from 1978.
- The name Delphinus
originated from the nearby world famous Dolphinarium in
the town of Harderwijk.
- The group observed from
the roof of an old watertower in the woods nearby the
town untill 1992.
- The objectif of the group
Delphinus is to make meteor observations every clear
night the whole year through regardless of activity of
major meteor streams.
A confectioner in daily life, he is interrested in
meteors, photograpy and symponic and heavy-metal rock
music (Rush, Arena,Dream Theater, Irion Maiden and
Metallica). Koen was the driving force behind the team
Delphinus in the years 1980-1992.
- With Casper and Marco
joining the team in 1993, the team efforts were more
divided among the members.
- He is the foremost active
visual observer in the Netherlands,(and the Benelux
countries), sometimes spending as much as 150 effective
hours per year observing Meteors.
- He has a record of
observing over 30.000 meteors.
He has some practice of 'getting a few hours of data'
before he departs for the bakery early in the morning.
Like Marco, he is especially keen in tracking down meteor
outburst phenomenon, of which he observed 10 over the
last years, including a number of totaly unpredicted
events (like the Canis minorids 1993 and the Orionids
1993). From 1980-1995 he was highly involved in the
boulding and development of new camera arrays for meteor
photography. Sinds 1996 Robert has taken over this effort
so that Koen now is able to fully devote his efforts to
- Ing. Casper ter Kuile (born
12 September 1954) started astronomy as a hobby at age 12 in 1966. The first
meteor shower he observed was the Orionid shower in 1971, from a camper near
Hengelo in the eastern part of the Netherlands. The intensification of his
activities in this field came with the Lyrids in 1972, followed by the famous
Perseids of 1972 when he and his friends set up a camp for two weeks at the
Public Observatory of Mr. Henny Gosemeyer in Denekamp, also in Twente. This
camp was part of a nationally coordinated observing campaign of the Meteor
Section of the Dutch Association for Astronomy and Meteorology. Following
this, Casper stopped for a couple of years with meteor observations.
He restarted again when the Hengelo Association for Astronomy (HASA) started
to organise meteor observing camps from 1978 onwards at the observatory of
Mr. Eindhoven near Buurse, at the German Border south of Enschede.The Perseids
1978 marked the beginning of a very profitable cooperation
between the HASA, the observatory of mr. Eindhoven at Buurse and the Dutch
Meteor Society which was founded by Hans Betlem in april 1978. The meteor
group "Buurse" also had very frequent contacts with the meteor observing
groups "WVS" at Denekamp and "Delphinus" at Harderwijk.
In Buurse Casper
ter Kuile coordinated the photographic obervations and the contacts with the
DMS and other observing groups mentioned above. Marked highlights of this
period were the Perseids of 1980, 1982, 1983,
1985, 1986, the Lyrids and Orionids in 1984, and some other showers.
Then, in 1988 the team stopped observations in Buurse and the Perseids were
then observed from Langeveen in the upper North-Eastern part of Twente.
In 1989 Casper observed the Perseids for about two weeks together with Peter
Jenniskens, at the farm of Peter's parents in Meterik which is in the Province
of Limburg in the southern part of the Netherlands.
In december 1990 a first expedition was organised by Marc de Lignie, Peter
Jenniskens and Casper ter Kuile to southern France to observe the Geminids.This
expedition was very succesfull, with many hundreds of photographed meteors
and hundreds of visual observations.
In 1991 observations were carried out in collaboration with Carl Johannink
of the "WVS" at the Youth Hostel "the Brecklenkamp" where
the IMC'83 has been organised by the "WVS". In 1992 observations
were performed from VST-Lattrop Public Observatory too. This year marked the
birth of the well known (and notorious) "crash" campaigns.
On August 11/12, 1992, the first Dutch observations of a Perseid outburst
were conducted by Peter Jenniskens, Marco Langbroek, Carl Johannink, Romke
Schievink and Casper ter Kuile from Basel,Switzerland. In a desperate move,
the team had decided to flee from the clouded Netherlands on the
day of the outburst, driving hundreds of kilometers due south, to Basel. In
august 1993 we organised our second big expedition to Southern France, to
observe yet another Perseid outburst. This expedition too turned out to be
highly succesfull with many hundreds of photographed meteors and hundresd
of visual observations. Like for Marco, this campaign initiated the close
cooperation with Koen and Robert and saw the birth of the modern Delphinus
From 1993 onwards Casper ter Kuile joined group Delphinus permanently, as
did Marco. The team now
observed from the now well known location "Biddinghuizen" at the
farm of the Appel family, in the
extremely dark polder landscape in the center of the Netherlands.
Some remarkable highlights during the period 1994 - 1998 are: the Leonid /alfa
Monocerotid expedition the Andalucia, Spain in November 1995, the"crash"
expedition in november 1996 to observe the Leonids from
Woignarue, France (during this campaign the team detected the first certain
occurrence of a narrow secundary activity structure in the (outburst stream)
and the all time high Sino-Dutch Leonid Expedition 1998 to China which is
our most succesfull meteor campaign ever, and probably one of the best and
most succesfull meteor observing expeditions ever organised worldwide.
- In daily life, he is a
professional IT-engineer at the Laboratory of Radiation
Research of the National Institute on Public Health and
Environmental Care at Bilthoven near Utrecht, in the
center of the Netherlands
- Casper ter Kuile is
co-auther of a number of publications on meteor
- 1 Three-Station
Photographic Observations of the 1990 Geminid Meteor
Shower. In Stohl and Williams (eds.): Meteoroids and
their Parent Bodies, Proceedings of the International
Astronomical Symposium at Smolenice, Slovakia 1992 p.
- 2 Orbits of meteorite
producing fireballs: the Glanerbrug - a case study.
Astronomy & Astrophysics 255 (1992) p. 373-376
- 3.The Glanerbrug meteorite
fall. Publications of the Astronomical Institute of the
Czechoslovak Academy of Sciences 79 (1992) p. 1-17
- 4. Precisely reduced
meteoroid trajectories and orbits from the 1995 Leonid
meteor outburst. PDF (100 kB) Planetary and Space Science
Elsevier Science Ltd.
5 Precision meteor orbits obtained by the Dutch Meteor
Society Photographic Meteor Survey (1981 - 1993). PDF
(260 kB),Astronomy & Astrophysics - Supplement series
128 179-185 (1998)