Around 2000 pages total. This one is actually a good book. With detailed charts and clear writing throughout, this book is great for beginners, but still useful for more experienced skywatchers. This is still a classic work on the subject, from around 1920 or so. Detailed historical notes for each constellation, followed by notes for many of the bright stars.
Some sections have fifty names or more, from Latin to medeival to Babylonian and Chinese.
An affordable edition from Dover Publications. An interesting overview of an unusual topic. Covers the problems and known solutions affecting the future of space colonization. A good overview of the search for planets around other stars. Particularly for open clusters, you'd be surprised at finding IC and Stock objects within binocular range.