by Ian Ridpath, Illustrated by Wil Tirion. New fourth edition now in stock! This essential guide to the night sky has been fully updated with brand-new sky charts, diagrams and photographs. It features monthly maps of the night sky as seen from latitudes throughout the world, charts of all 88 constellations, with data and notes on bright stars and objects of interest for observers, an illustrated introduction to stars, nebulae, galaxies and the solar system and advice on choosing and using binoculars and telescopes. Detailed moon maps and descriptions of the main lunar features are included.