The Celestron SkyScout makes great use of GPS. Look at the night sky through this handheld gizmo and it can tell you what you are looking at. The screen gives you the name of the star, the planet, etc. and it will also talk to you and give you the same info. Since it’s knows the date, the SkyScout can also tell you what’s available where you are and tell you which way to turn to see particular objects. (You follow the arrows in the viewfinder) If you like, you can download new tours and data to an SD card via computer. Now when you look up in the sky you won’t have to guess at what you’re seeing. Coming in March for under $400.
SkyScout