The Practical Astronomer's Deep-sky Companion is an essential item of equipment for deep-sky observers, whether they are interested in imaging or just sightseeing. This beautiful large-format full-colour book is designed to be taken out into the field during observing to provide all the information necessary for finding and imaging interesting deep-sky objects. There is a vast amount on information packed into each spread - photographs, position, maps, recommended exposure times, and much, much more. Every amateur astronomer will want a copy of this!