Dark nebulae, dark lanes, and dust belts
著者
書誌事項
Dark nebulae, dark lanes, and dust belts
（Patrick Moore's practical astronomy series）
Springer, c2012
- pbk. : alk. paper
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注記
Includes bibliographical references (p. 237-239) and index
内容説明・目次
内容説明
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.
目次
Introduction. - The Nature of Unlit Gases and Dust, and their place in the Universe. - Observing Methods and Equipment. - Dark Lanes in Star Clusters. - Dark Lanes in Diffuse Nebulae.- Barnard's Dark Nebulae. - Galactic Dust Belts, and other Dark Regions. - Catalog and Guide. - Appendices.
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