The Night Sky Companion 2009-2010 pdf epub mobi txt 电子书 下载 2026

The Night Sky Companion 2009 takes a look at astronomy every day over the course of the year - offering an overview of general history, soft science, astronomical trivia, and observing guides and motivation. Designed to appeal to readers at all skill levels and involvement, it provides a digest for sky watchers interested in all-in-one-place information that includes history, current events, and of course interesting objects to be observed on any given day. The Moon is followed through its phases with observing instructions, annotated pictorial maps, concise photos, and the science and history of what makes lunar observing a fascinating challenge. It is important to realise that the 2009 edition does not repeat anything of the previous edition. All the historical tie-ins, information and objects are completely fresh. A reader who buys the 2009 edition will not have merely an updated copy of the previous volume - they will have a completely new book. Unaided-eye observers are offered an opportunity to view many objects or events; learn about their history, science and how just "looking up" can be rewarding. Binocular and small telescope users will find a wealth of things to view using simple star hop instructions and finder charts. This book is more than just an observing guide, it's a way of learning your way round the night sky. Large-aperture telescope users looking for a challenge are not ignored either. Some of the finest deep-sky objects are detailed, with finder maps and photographs, most of them taken by talented amateurs. Be it a meteor shower, double stars, variable stars, solar viewing, lunar features, a variety of catalog studies, history or the physics and science behind the stars - you'll find it here, written in an easy-going style ideal for 'dipping in' on the relevant day, or even reading from cover to cover.