Best method
Start with the brightest nearby objects, then compare Phone Compass and Stargazing with the AR overlay.
Stargazing guide
How Phone Compass Alignment Works
AR stargazing web apps depend on motion sensors, compass heading, and camera orientation. Small alignment errors are normal on mobile devices.
Quick facts
Use these cues first, then confirm the pattern in the AR viewer.
Location matters
Altitude and direction change with latitude, longitude, date, and time.
Alignment tip
If the phone compass drifts, adjust the heading controls until a known star pattern lines up.
Why alignment can drift
Nearby metal, magnetic cases, vehicles, buildings, and sensor noise can make the compass less accurate.
How to correct it
Compare the overlay to a known bright constellation or direction, then use the heading controls or horizontal drag to fine-tune the map.
Best practice
Stand away from large metal objects, hold the phone steadily, and re-check alignment when moving to a new part of the sky.
How to apply this guide outside
Read the Phone Compass and Stargazing guide first, then choose one practical thing to verify in the real sky before opening the AR viewer.
Good AR observing is slow. Move the phone gradually, pause when labels appear, and compare one bright reference at a time.
If the overlay is slightly shifted, use the alignment controls before drawing conclusions from fainter labels or crowded areas.
Why the result changes by device
Different phones and browsers expose camera, compass, and motion data with different accuracy and timing.
The astronomy positions are calculated from time and location, while final screen alignment depends on sensor quality. This is why the web app includes object filters and careful permission handling.
Viewing details
Use these practical cues to connect the written guide with the live AR sky overlay.
Practical first step
Read the guide, then start with one bright object or direction before opening Phone Compass and Stargazing.
Location matters
The sky changes with latitude, longitude, date, and time.
Alignment tip
If the overlay drifts, adjust it against a known bright object before exploring fainter targets.
Frequently asked questions
Short answers for common skywatching questions before opening the AR viewer.
Can I find Phone Compass and Stargazing from a city?
Often yes if the key stars or object are bright enough, but haze, buildings, and light pollution can hide fainter details.
Why can the AR overlay be slightly offset?
Mobile compass readings can drift near metal, cases, cars, and buildings. Move away from those sources and restart AR if the direction remains unstable.
Does my location change the result?
Yes. The same object can be high, low, or below the horizon depending on your location and the current time.
Related sky guides
Use these pages to move from reading into the AR viewer with better context.
Open AR to find Phone Compass and Stargazing
Use the browser sky map to compare Phone Compass and Stargazing with the real sky from your location.