Hilmar Lorenz – författare
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4 produkter
4 produkter
Inbunden, Engelska, 1994
3 231 kr
Skickas inom 10-15 vardagar
The importance of wide-field imaging in astronomy has never been so evident. The deep photographic surveys of the sky are nearing completion. The advent of large-format solid state detectors will provide further deep digital sky survey data. Optical surveys of the sky are being complemented by surveys in other wavebands of the electromagnetic spectrum, principally in the X-ray and near-infrared. The mass of digital data being gathered is driving the need for mass-storage archival capability, and for rapid capabilities in data acquisitioning and processing. New techniques are being developed to optimize the extraction of the information content. The quality and quantity of data now available to astronomers are enabling new breakthroughs in many fields, such as studies of the structure of our own galaxy and properties of nearby galaxies, the large-scale distribution of galaxies and the nature of the mass-content of the Universe. These facets of wide-field astronomy are brought together in this book.
Häftad, Engelska, 1994
3 231 kr
Skickas inom 10-15 vardagar
The importance of wide-field imaging in astronomy has never been so evident. The deep photographic surveys of the sky are nearing completion. The advent of large-format solid state detectors will provide further deep digital sky survey data. Optical surveys of the sky are being complemented by surveys in other wavebands of the electromagnetic spectrum, principally in the X-ray and near-infrared. The mass of digital data being gathered is driving the need for mass-storage archival capability, and for rapid capabilities in data acquisitioning and processing. New techniques are being developed to optimize the extraction of the information content. The quality and quantity of data now available to astronomers are enabling new breakthroughs in many fields, such as studies of the structure of our own galaxy and properties of nearby galaxies, the large-scale distribution of galaxies and the nature of the mass-content of the Universe. These facets of wide-field astronomy are brought together in this book.
E-bok
Engelska, 201562 kr
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At the end of the year of 2015, an international conference shall take place in Paris to which the UN has invited the leaders of all nations in order to make an internationally binding treaty about the necessary measures for preventing that the global warming surpasses the limit of two degrees since the beginning of industrialization. The import of making this treaty this year is that, without taking the necessary measures now, a worldwide climatic cataclysm may start that, after having started, cannot be stopped by any treaty to be decided on later, when all nations are ready for it, because they have been sufficiently hit by that cataclysm. Accordingly, the political leaders on this globe have a last chance to prevent that cataclysm of which early signs are already visible everywhere, though to very different degrees. Precipitations fall less frequently than in former decades, and when they fall, they much more often cause floods that, by their immediate impact, more frequently produce destructions of a degree that, until recently, were unheard of. The number and extent of forest fires has drastically increased, as have hurricanes and tornados. And the sea level is rising from melting glaciers and ice sheets around the North and South Poles, so that island nations in the Pacific Ocean are on the brink of drowning in the surrounding seas.
E-bok
PDF, Engelska, 20123 809 kr
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H.T. MacGilLIVRAY Royal Observatory Blackford Hill Edinburgh EH9 3HJ Scotland U.K. lAU Symposium No. 161 on ''Astronomy from Wide-Field Imaging'', held in Potsdam, Germany, during 23-27th August 1993, was the first conference organised by the recently-formed Working Group of lAU Commission 9 on ''Wide-Field Imaging''. This Working Group was instigated during the XXIst meeting of the General Assembly of the International Astronomical Union in Buenos Aires in 1991, and represented a merging of the former formal lAU Working Group on ''Astronomical Photography'' and the informal ''Digitised Optical Sky Surveys'' Working Group. Dr. Richard West was ''invited'' to be Chairperson, and hence was given the daunting task of organising the Group from scratch. The very fact that the first conference after only two years was a major lAU Symposium says much about the determination and enthusiasm of Richard West to fulfilling the aims of the new Working Group. The siting of the conference in Potsdam in formerly East Germany provided an excellent opportunity to advantage from the political changes in Eastern Europe. Good access to the meeting was possible by scientists from Eastern European countries, allowing exchange of information on the very important Wide-Field facilities in both East and West, information on the rich archives of photographic plates that exist in both East and West, and allowing discussions between scientists facing very similar problems in both East and West.