Diamond dust season is about to begin, the hissing of guns at the Ruka resort may be heard already at the end of September. To get in the spirit, let's reach into the drawer and grab this display which appeared on the night of 7/8 February 2017 in Rovaniemi. At first it was bog-standard plate with CNA, sub-120, and sub-Lilje / subparhelic circle patch opposite to the lamp, but then it changed, giving these long subparhelic arcs. The lamp sits at the usual ~5 degrees below the horizon. The location is Sieriaapa bog some 6 km east from the ski center. This is the direction where the diamond dust most often heads to, guided by the prevailing wind and topography.
Awesome Marko! I hope you can get more spotlight stuff
ReplyDeleteThe plan is to return to Rovaniemi, but probably not this winter. I have a tight-beam no-flood light thrower waiting to be tested. Displays should show up nicely, also against the dark ground.
ReplyDeleteSpeaking of halos, Since I have a large barn to keep my tractors in, when it gets super cold get a bucket of warm water and place an ultrasonic mist maker into the bucket and let the air become full of moisture and then blow some clay dust into the air.
ReplyDeleteWow, you guys start so early? I'm pretty envious to be honest. Last winter was extremely sub-par in Czechia. Too many low pressure systems, so temperatures were around 2°C and it was very windy. Let's hope the next winter will be better.
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