Star Sector Atlas 11 is a supplement for Space Opera. This 46 page sourcebook on the Confederate Systems Alliance includes sections on the history of the North American Nebula, a starsector map and list of planets, details of 40 planets, histories of secondary colonies, animal encounters, starlines, starline route map, Korellian Police, Underground Alliance, Q-Section and special equipment, CSA military and unit organizations, and walker-warbot armor.