I’ll admit to have been jealous of my good friend Xopher‘s Nexus One phone and its nifty Android-based, augmented reality Google Sky Map. But I knew I’d find a similar one for the iPhone.

Lo and behold, while in Seaside, a friend showed me Star Walk running on his iPad.

One thing the video doesn’t showcase is that the application makes use of the built-in compass, GPS and gyroscope. This lets you simply point your device anywhere and get a picture-perfect representation of what astronomical objects are in your field of vision as well as get all the details you could want about them.

At $2.99 for such a complete app, I think it’s a very good deal and entirely worth the expense.

Copernicus would be stoked. :)