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ISBN-13:
9781846287299
Veröffentl:
2007
Seiten:
156
Autor:
Steven Coe
Serie:
Astronomers' Observing Guides
eBook Typ:
PDF
eBook Format:
EPUB
Kopierschutz:
1 - PDF Watermark
Sprache:
Englisch
Beschreibung:
Nebulae are the places where the stars are born. They can also be opaque clouds of dust that block our view of the stars beyond, starlight reflecting on cosmic dust clouds, or hot luminous expanding gases left over from a supernova explosion. Any description of this class of celestial object is... well... nebulous.
"This Astronomers' Observing Guides are designed for practical amateur astronomers who not only want to observe, but want to know the details of exactly what they are looking at.
Introduction. PART 1- 1. Star Formation and Composition - the ingredients of Nebulae.- 2. The Milky Way - our Galaxy and Home to Nebulae - Emission Nebulae - Reflection Nebulae - Dark Nebulae - Planetary Nebulae - Supernova Remnants - Extragalactic nebulae? PART 2- 3. Instruments - naked eye, binoculars, RFT, Mak/SCT, Dobsonians.- 4. Techniques - Dark adapation, red light, averted vision.- 5. Accessories - eyepieces, filters, finders.- 6. Locating objects - setting circles, star hopping, 'goto'.- 7. Resources - finder charts, computer-based planetaria, deep-sky books, the Internet.- 8 Observing Guide - planning, conditions and weather, seeing and transparency, atmosphere, logging.9. Observing lists. Catalogues of nebulae - general: NGC/IC, Messier; Gaseous: Lynds; Planetaries: P+K, Strasbourg; Dark: Barnard, Lynds