SkySafari from Southern Stars is an app for the astronomy enthusiast with an iPhone. It's the perfect companion for a new telescope owner, who can use the app to help locate celestial bodies in the sky, or the casual observer who wants to know the name of that bright star cluster overhead. It's also useful for the seasoned astronomer who wants a pocket reference that's chock full of information.
The basic app (US$2.99) displays over 120,000 stars and has images of all the major planets and their moons. It also includes information on well-known asteroids and comets. SkySafari lets you look up details on each heavenly object including its catalog number and its coordinates in
