I've been spending the day reading the info on an iPhone application I've had for a while called
Emerald Chronometer. This app reproduces 11 different very expensive watches with faces on the front and back of most. There's everything you could ever imagine needing if you are an astronomy buff, and it's on sale until July 11. Here's an
iTunes link to the app. Check it out for yourself, but beware- you might be spending a lot of time just learning to use it.