Deep-Sky Observer's Year

Deep-sky observing - that''s looking at the stars, nebulae and galaxies - is easily the most popular field for amateur astronomers. The big problem faced by non-professional observers is what to look at - what''s visible at a paticular time of year. The Deep-sky Observer''s Year is a month-by-month guide to the best objects to view. Objects are given a "star rating" according to how difficult they...