JupiterMoons!

JupiterMoons is your essential guide to observing the king of planets whenever Jupiter reigns over the night sky. Sky & Telescopes app helps you locate Jupiters four largest moons and time transits of the Great Red Spot with an easy-to-use interface. Please note: this application is designed to work in landscape orientation only so that you may view Jupiter, the Great Red Spot, and the Galilean satellites at their best.