An important tool is the SQM roadrunner system. The Sky Quality Meter "SQM" by the Canadian manufacturer Unihedron is a small photometer that measures the night sky brightness. It has become the most widespread device for world-wide light pollution studies. You can get a handheld SQM and participate by uploading your data to websites like Globe at Night.
The roadrunner system links an SQM (LU version) with a GPS - so you can move around and automatically track your position and the sky brightness. One can use any vehicle for that, researchers used cars or bicycles.
The obstacles were driver installation, that the software (infos in this pdf) is in Spanish and the mounting. As I do not know the car I simply used a standard SQM housing and attached it to a base I found in my garage using tools I found in the garage ;)
Tonight we will create our own light pillar at the middle of the lake (we got the stuff in the local shop in Kilpisjärvi). The lake is flat and we will most likely not be disturbed by cars or village lights.
A 20 minutes snowmobile drive later we are on the lake, install our LED floodlight and pose for the camera. Then we switch it on and off and take images from different spots.
Again we have to kneel down - this time all four (Franz, Joonatan, Konstantin and I)....Joonatan
is making jokes at some stage as we all kneel down in a circle "We
praise the ancient gods of mount Saana". It must look really like a strange ritual.....
Finally, Joonatan tells the legend oft Lake Kilpisjärvi and the landscape in the region - a legend about the giants Malla and Saana. In the end Saana (the bride) formed the lake from her tears. Read the story here.
It is very awesome listening to the tale while kneeling down in front of our Canon camera....and while Joonatans story continues a dim a…
I took a room with a window (same price as without window...so what do you pick?). However, you dont have blinds. Well, doesnt matter its arctic night, right?
Ironically,I got a fancy LED color changing triple flood-light installation right in front of my window 😁.
Disco in Abisko!
Well that's very anoying. Luckily room has a 3 person bunk bed so I can use the sheets to cover the window.
The evening got worse when I saw that the sky is not clear (forecast was clear) but Abisko is covered in (icy) fog resulting in a "nice" orange fog-glow. SQM reading was around 16 mags. Illuminace was 0.2lx with only few direct contributions.
So I went to sleep a bit as the last night was really exhausting. Set the alarm to 10pm. Got up same fog soup 😠.
Well I am here to do measurements at all weather conditions so I jumped in the car and drove through that soup. I expected it to be pitch bl…