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The Galactic and Extragalactic Background Radiation - Proceedings of the 139th Symposium of the International Astronomical... The Galactic and Extragalactic Background Radiation - Proceedings of the 139th Symposium of the International Astronomical Union Held in Heidelberg, F.R.G., June 12-16, 1989 (Paperback, Softcover reprint of the original 1st ed. 1990)
Stuart Bowyer, Christoph Leinert
R2,866 Discovery Miles 28 660 Ships in 18 - 22 working days

The galactic and extragalactic background radiation components are of major importance in astrophysical studies of a variety of problems related to galactic structure, interstellar matter, the distribution and evolution of galaxies and intergalactic matter, and cosmology. The back ground radiation is a unique source of information in cases where the source is of a truly diffuse nature, as with scattering and emission by interstellar dust and gas, or where the discrete emission sources are so faint (e. g. , very distant galaxies) that they can be observed only by their integrated emission. The galactic and extragalactic background must be discussed together because they are observationally entangled and their proper separation requires a knowledge of both components. The above points are equally valid for the entire electromag netic spectrum, from gamma rays to long radio waves. Thus, the study of the galactic and extragalactic background radiation is interdisciplinary in its character, and a multi wavelength approach would appear to be dictated by the nature of the topic. The proper separation of the galactic and extragalactic background components requires a knowledge of both. In addition, the foreground components, i. e. , zodiacal light, airglow, and atmospheric scattered light, must be treated carefully.

Handbuch Fur Sternfreunde - Band 2: Beobachtung Und Praxis (German, Paperback, 4th 4. Aufl. 1989. Softcover Reprint of the... Handbuch Fur Sternfreunde - Band 2: Beobachtung Und Praxis (German, Paperback, 4th 4. Aufl. 1989. Softcover Reprint of the Original 4th 1989 ed.)
Rainer Beck; Edited by Gunter D. Roth; Contributions by Horst Drechsel, Johannes V. Feitzinger, Reinhold Hafner, …
R3,018 Discovery Miles 30 180 Ships in 18 - 22 working days

Dieses Handbuch soll dem astronomisch interessierten Laien, dem Amateurastronomen ebenso wie dem Lehrer in der Schule Anleitungen fur die praktische astronomische Betatigung geben. Die sturmische Entwicklung der technischen und organisatorischen Voraussetzungen fur die Amateurbeobachtungen hat in der 4. Auflage in allen Kapiteln, einschliesslich einiger neuer Kapitel, ihren Niederschlag gefunden und zu einer deutlichen Erweiterung des Umfangs auf nunmehr 2 Bande, die einzeln erhaltlich sind. Aus den Besprechungen: ..". Die auf hochwertigem Papier gedruckten Beitrage sind ... im astronomischen Bereich einmalig. ... mustergultiges Fachbuch ... ersetzt muhelos eine sehr gute Bucherzusammenstellung, ... und ist dabei dennoch preiswerter als diese." "Rudolf-Romer-Sternwarte Mitteilungen" #1 Band 2 "Beobachtung und Praxis" stellt die Objekte der astronomischen Beobachtung (Sonnensystem, Fixsternwelt, Milchstrassensystem, extragalaktische Systeme) vor und gibt Anleitungen fur Beobachtungen, Messungen und Auswertungen im einzelnen. Band 1 "Technik und Theorie" informiert uber das grosser und leistungsfahiger gewordene instrumentelle Angebot fur Amateurastronomen, z.B. neuartige Strahlungsempfanger, moderne Halbleitertechnologie und elektronische Datenverarbeitung. Wichtige Methoden der Beobachtung und Datengewinnung (z.B. Photographie, Spektroskopie, Photometrie) werden ausfuhrlich in eigenen Kapiteln behandelt."

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