It turned out to be a fairly trivial project to modify the code to use the new Sky maps, so on yet another wet Sunday afternoon, I did...
However getting used to using two fingers to drag the map around instead of one is surprisingly hard, it's very anti-intuitive for some reason. I'm also not entirely convinced it runs fast enough, at least for my purposes, it seems much less responsive and much more jerky during scrolling than the native
Maps.appapplication. It's a great hack, but not the solution to my problem. But don't take my word for it, if you've got an iPhone or an iPod touch you can try it for yourself.
Back to the hex editor perhaps?
The Carinae Nebula in Google Maps