books.google.com.au - The Messier's catalog of 109 'non-stellar' objects is still used by amateur astronomers as a guide to interesting objects to view and image. In 1995 the notable English astronomer and broadcaster Sir Patrick Moore published his own catalog of a further 109 objects, to complement the Messier catalog and...http://books.google.com.au/books/about/The_Caldwell_Objects.html?id=amPrWoOWgHcC&utm_source=gb-gplus-shareThe Caldwell Objects
