FMI old all-sky cameras: Sample images
The images taken by the old cameras
(used before 1996) contain information about the date and time when the image was
taken. Also, three light standards are also imaged. Note that because
this camera construction uses a spherical mirror the camera blocks the
centre of the image. Thus the green light standard can be placed in
the middle of the spherical mirror without losing important details
from the zenith.
The sample images here have been compressed with lossy compressing
JPEG-compression. This means that small details in the images are lost
but that the compression ratio is larger.
A nice green auroral arc
A beautiful blue auroral arc
More information: Kirsti Kauristie