European Fireball Network: Difference between revisions
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Revision as of 15:21, 8 June 2010
European Fireball Network is an international organization based in Central Europe (Germany and Czech Republic). Its purpose is systematic and simultaneous night observation of meteors and other nebular objects from several stations for scientific purposes.
The network was initiated locally at the Ondřejov Observatory, Czech Republic, after the fall of the Příbram meteorite on 7 April 1959, which was the first meteorite simultaneously observed by several stations. By 1963, the network consisted of 5 stations. It was later (about 1968) expanded by the installation of about 15 new stations in Germany and named the European Fireball Network.[1]
The network currently consists of at least 34 camera stations located in Germany, Czech Republic, Belgium, Luxembourg, Switzerland and Austria at elevations up to 1846 m above mean sea level. The cameras are separated by a distance of about 100 km; they cover an area of about one million square kilometers and photograph the entire visible sky. Cameras of Czech stations are equipped with fisheye lenses and are directed towards the zenith. Sky recordings are made every night with a long exposure time. Quickly moving bright objects (meteors) appear as broken traces in the images, and from the exposure time, the burn time and the angular velocity of the object can be determined. An important feature of the network is the simultaneous observation of an object from several stations that allows accurate three-dimensional reconstruction of its trajectory using triangulation. The network is jointly operated by the German Aerospace Center (DLR) and the Institute of Planetary Research in Prague (Ondřejov Observatory). It produces about 10,000 images per year documenting about 1200 hours of clear sky observations. Its cameras detect about 50 large meteors per year.[1][2]
The most famous observation by the network is the fall of the Neuschwanstein meteorite in 6 April 2002. Detailed data obtained from several stations allowed accurate reconstruction not only of the meteor path in the Earth atmosphere, but also of its orbit around the Sun. The similarity of the reconstructed orbits of the Neuschwanstein and Příbram allowed associating these meteorites to the same parent body.[3][4][5][6][7]
References
- ^ a b Oberst, J.; Molau, S.; Heinlein, D.; Gritzner, C.; Schindler, M.; Spurny, P.; Ceplecha, Z.; Rendtel, J.; Betlem, H. "The "European Fireball Network": Current status and future prospects". Meteoritics & Planetary Science. 33 (1): 49.
{{cite journal}}: CS1 maint: multiple names: authors list (link) some exerpts - ^ European Fireball Network page at DLR (in German)
- ^ Oddbjorn Engvold (2007). Reports on Astronomy 2003-2005 (IAU XXVIA): IAU Transactions XXVIA. Cambridge University Press. p. 168. ISBN 0521856043.
- ^ "Meteor Neuschwanstein". DLR - Institute of Planetary Research (in German).
- ^ J. Colonel, D. Heinlein, U. Köhler, P. Spurný (2004). "The multiple meteorite fall of Neuschwanstein: Circumstances of the event and meteorite search campaigns". Meteoritics & Planetary Science. 39 (10): 1627–1641.
{{cite journal}}: CS1 maint: multiple names: authors list (link) - ^ P. Spurný, J. Oberst, D. Heinlein (2003). "Photographic observations of Neuschwanstein, a second meteorite from the orbit of the Pribram chondrite". Nature. 423 (6936): 151–153. doi:10.1038/nature01592. PMID 12736679.
{{cite journal}}: CS1 maint: multiple names: authors list (link) - ^ Kornoš, Leonard; Tóth, Juraj; Vereš, Peter (2007). "Orbital Evolution of Příbram and Neuschwanstein". Earth, Moon, and Planets. 102: 59. doi:10.1007/s11038-007-9213-z.