Book recommendation?

[gridlore]

I'm looking for recommendations for a good, college-level astronomy text. I know the basics already, but am interested in getting a little deeper into the subject. Something I could find at my local library would be best.

Thanks in advance.

Comments

[jackwalker.livejournal.com]

Best such text I have on hand is An Introduction to Modern Astrophysics, by Bradley W. Carroll and Dale A. Ostlie, published in 1996 by Addison-Wesley.

Big thick thing, and full of advanced undergraduate-level mathematics. I found it a very useful reference when doing the world-design systems for GT:First In, GT:Interstellar Wars, and G:Space.