ALIS_4D i Kiruna samt firmamentkameran i Kiruna

What is ALIS_4D and what is a all-sky camera?

On the rooftop of the IRF headquarters in Kiruna are domes that protect, among other instruments, various aurora cameras. Under one of these domes is one of a total of five cameras that are part of the unique measurement system ALIS_4D, intended for aurora studies. Under another dome is an all-sky camera that images the entire sky and shows when there are auroras over Kiruna. 

In addition to the ALIS_4D camera on the roof in Kiruna, IRF has four more measuring stations with cameras in different locations:

  • Esrange Space Center
  • Abisko
  • Tjautjas near Gällivaare
  • Silkkimuotka near Nedre Soppero

By having a distance between the measuring stations, the scientists get an overlap of the field of view so that they can do tomography of the aurora, to see it in three dimensions.

Click here to read more about ALIS_4D

What is an all-sky camera?

The all-sky camera displays the entire sky and exposes one image per minute to monitor aurora activity and other phenomena.
This type of measurement has been carried out at IRF since 1956. Global network of firmament cameras started during the International Geophysical Year of 1957.

Want to see what the all-sky camera sees?

Click here

ALIS_4D i Kiruna samt firmamentkameran i Kiruna
The ALIS_4D camera at the head office in Kiruna (left) and the all-sky camera (right).

The image shows the aurora occurrence over Kiruna from the last few days.
This is called a keogram.

Under these domes is the all-sky camera that shows when there is aurora over Kiruna and one of the five cameras that are part of the measurement system ALIS_4D.
Urban Brändström
Urban Brändström, head of  Kiruna Atmospheric and Geophysical Observatory and optical aurora scientist responsible for ALIS_4D. Next to him the domes with cameras. Below is an example of how data from ALIS_4D looks like.


Created by Annelie Klint Nilsson at

Last modified by Annelie Klint Nilsson at