Your Night Sky at Sea
Install AstroCruise for cruise-specific sky guidance, aurora forecasts, itinerary planning and tonight’s observing plan.
Use automatic ship tracking to calculate your local sky.
LIVE NAVIGATION
Calculating…
Set ship position first.
Set ship position first.
Centre = overhead (zenith). Edge = horizon. North is at the top.
Ship course will be calculated automatically while the vessel is moving.
For the compass option, point the top of the phone toward the ship's bow. GPS course-over-ground is preferred while underway.
Set ship position first.
Our closest neighbour
Set ship position for local viewing advice.
Times are calculated for your current ship position and may change as the ship travels.
Keep the voyage and observing location on this device.
GPS coordinates stay in this browser unless you choose to clear them.
A simple guide showing how worthwhile it is to look for the aurora from your current location.
Refresh the forecast to see the current likelihood of aurora from your location.
For a more detailed specialist aurora forecast and live alerts, AstroCruise recommends checking Glendale as well.
Open Glendale AppGlendale is an independent aurora forecasting service and is not part of AstroCruise.
Start with the Moon, bright planets and the brightest stars. These become anchors for recognising constellations.
The horizon and deck structures give temporary reference points, but allow for the ship’s heading, roll and changing course.
AstroCruise uses live propagated solar-wind speed, density, dynamic pressure, IMF Bz, total field strength, latitude and local darkness. It deliberately does not use the planetary Kp index.
Use red light and minimise screen brightness to preserve dark adaptation.
Never look directly at the Sun without suitable certified solar viewing protection. Telescopes, binoculars and cameras need a proper front-mounted solar filter.