Deep-Sky Companions: The Caldwell Objects

For more than two centuries, amateur astronomers have earned their stripes by observing the 109 star clusters, nebulae, and galaxies cataloged by French comet hunter Charles Messier. Sir Patrick Moore has compiled a new list of 109 deep-sky delights, the Caldwell Catalog, which covers the entire celestial sphere. Stephen James OMeara has observed all 109 Caldwell objects and Deep Sky Companions presents his beautiful sketches and detailed visual descriptions and discusses each objects rich history and astrophysical significance.