[Utah-astronomy] Spacecraft 3D

Here's an app I just came across that puts the next Mars lander on your desktop using augmented reality (I just used it to put the rover next to my cat which is sleeping on the side of the desk. http://itunes.apple.com/us/app/spacecraft-3d/id541089908?mt=8 Once you get the hang of it it does work but it does not come with much in the way of instructions. This YouTube video helped: http://www.youtube.com/watch?v=9HAUkm3Lkjo Also, where it talks about printing out a target I found it works pretty well just displaying the target on my monitor. I'm going to have a target professionally printed on card stock later today and see how that works. BTW, I'm not really sure why the target is necessary. But it is. patrick