Local Sky Setup and Satellite Pass Planning
Before planning an observation, Heavens-Above uses your observing location to calculate what should be visible overhead. You can let GPS supply the position or enter a place manually, then open the main list of Live sky chart, Nightly Events, ISS, Radio satellites, and Search satellites. This gives beginners a clear starting route without requiring them to understand orbital data first.
Pass predictions turn that starting point into a practical schedule. The app can show when a satellite will appear and where to look, so you can choose a useful viewing window. Local calculations keep routine predictions available on the phone, while occasional data refreshes help keep the catalog current.
Live Sky Chart for ISS and Planets
The live sky chart is the app's visual way to explore the sky at a chosen time. A circular chart places planets, the Moon, constellations, and satellite paths around the compass, with tabs for Sky Chart, Orbit, and Info. Pan or zoom to inspect a region, use the time control to change the moment, and orient the phone toward a target when you want to connect the diagram with what is above you.
This view works for quick questions as well as planned observing. If a pass is already in your schedule, the chart helps you understand its direction; if you simply see a moving light, the layout gives you a route to identify it. Night mode keeps the interface red on black when preserving dark adaptation matters.
Nightly Events, Orbits, and Radio Satellites
Nightly Events brings the day's most useful viewing opportunities into a focused list, while dedicated ISS and Radio satellites sections narrow the search to familiar targets. Opening an event can lead to pass details, orbit information, ground-track context, or satellite-specific data, making the app useful beyond a single sky map. The same workflow also covers comets and other objects when they are part of the catalog.
Radio-satellite enthusiasts get extra context such as uplink and downlink information, and the Pro edition can apply Doppler-shifted radio frequencies. Orbit and ground-track views help explain where an object is traveling rather than only showing a point of light. This combination suits people who enjoy both casual skywatching and more technical satellite observation.
Search, Tracking, and Calendar Reminders
Search satellites is a quick route when you already know a name, object type, or mission. Use the searchable catalog to open a satellite's details, inspect its next passes, and move into a chart or orbit view without scrolling through unrelated entries. The tracker can then help align the device with the selected object, turning a database lookup into an outdoor observation.
For recurring interests, Heavens-Above can place an interesting pass on your calendar so the reminder is available outside the app. A location-aware schedule is useful for amateur astronomers, families, and curious beginners who want a short answer before stepping outside. It also supports a repeatable habit: search, check the next opportunity, orient the chart, and save the event.
