Dark Nebulae, Dark Lanes, and Dust Belts

di Antony Cooke (Autore)

Springer, 2016

There are 'voids' obscuring all kinds of objects in the cosmos. Voids may be within an object, or between an object and us. Dark Nebulae, Dark Lanes, and Dust Lanes looks out into the deep sky at those apparent dark regions in space, which are among the most compelling telescopic destinations for amateur observers. One famous example is Barnard's dark nebulae - those striking dark clouds set against the background of stars in the Milky Way. But there are countless other less well known examples. These dark regions are often ignored altogether or commented upon only briefly in astronomy books, and it is all too easy to overlook the treasure trove they offer the observer. Dark Nebulae, Dark Lanes, and Dust Lanes is a great source of practical information for observers. Such voids may be successfully observed using conventional observing methods, but they are often far better seen with technologies such as light-pollution filters, CCD video cameras, and image intensifiers. This book explains the optimal ways to observe each object in detail. While mention of such characteristics is made in a few of the available books, detailed visual references and descriptions for the observer with the kind of detail an observer needs, for a wide range of sights from cluster to cluster, nebula to nebula, or galaxy to galaxy, do not exist: certainly not in a book dedicated just to these types of phenomena. Such illustrations as there are in existing sources usually emphasize the primary lit portions of the object, so that much of the dark regions are lost in the overexposure… and lost to the discussion. While revealing the full dimensions and splendor of the objects, they often obliterate all the delicate inner structures. Typically, there is little discussion of most of these features in any of these resources, even when the effort has been made to provide viewing guidance. All dark voids may be successfully observed using conventional observing methods, but because dark gases and dust usually present a strong infra-red spectrum they are often better seen with different technologies, including certain light-pollution filters, CCD video cameras and image intensifiers, which feature a response skewed to this portion of the spectrum. Dark Nebulae, Dark Lanes, and Dust Lanes explains the optimal ways to observe each object in detail. To find a resource for this kind of information in one volume alone is yet to be realized. Uniquely, this new book provides a readily applicable, focused source of practical information from an observer’s point of view for a fascinating area of practical observing.

• Autore: Antony Cooke
• Anno edizione: 2016
• Editore: Springer
• Formato: EPUB2 con Adobe DRM
• Compatibilità: Tutti i dispositivi (eccetto Kindle)
• Layout: Reflowable
• EAN: 9781461411864

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