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The spectral-analysis.
Out of seven films that were taken with a grating in the front, only four pictures are good enough to see some kind of spectrum. Two strong ones and two weak ones. None of these pictures were taken of a light that have got an F10-G9.
The two strong ones are taken of a light which have got an F5. With other words; it might be a known light.They are taken Sunday 26 February at 03.08 am. The light was in the mountainside, northwest (azimuth 366 degrees out of 400) of the field-station at the lake Hersjoen. First there was a strong flash, then after 20 seconds, a strong "spotlight" was pointing at the observers for a couple of seconds. Then the spotlight was directed straight down for a couple of seconds. Thereafter the direction of the spotlight moved upwards and round in a half-circle, and back to the observers once more. Then it suddenly "turned off". The time from the first flash to the "turning off", was about 3 minutes. There were three observers observing this light. One of them thought it might be the spotlight from a snowscooter. But he was not sure, because the light seemed to be "too strong for that", and it had a little bit "strange movement". Anyway - this made it only an F5-light, even if it is strange that anyone should be out in the mountains at that time of the day.