FMI all-sky cameras: Images and animations

Each all-sky image consists of the image itself and a "timestamp" below the image. The timestamp contains details about which station took the image, the date and time of the image, the exposure time and the filter selection. There is also a "compass" which indicates the orientation of the image.

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Sample images

These sample images were captured simultaneously at three stations in Finland. One of the main arguments in having several stations is local weather conditions: if it's cloudy in Kilpisjärvi, it might be clear in Muonio. The clouds are between ground and aurora, so one needs to have clear weather in order to capture auroral images. The images here were taken through a narrow bandpass filter (557.7nm)

Kevo Kilpisjärvi Muonio

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Sample animations

• Sample auroras from Longyearbyen (3.3MB, 1997/01/10 UT1930-2230): This animation comes from Svalbard. The speeding lights which you can notice at irregular intervals are either snow scooters or cars passing the station... The time between each frame is 20 seconds.
• Another event recorded in Abisko (7.2MB, 1997/02/09 UT1800-UT2030): In this animation the auroras are projected onto a map over Northern Lapland. The time between each frame is 20 seconds.

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More information: Kirsti Kauristie
e-mail: firstname.lastname@fmi.fi

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