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"SnowyNight" by Koen Muller, ETH Zurich

defaultEntry in category 3 Locations and instruments; Copyright CC-BY-NC-ND: Koen Muller

 

Three powerful stadium floodlight panels retrofitted with cylindrical lenses illuminate a gigantic slab of snowfall in the Davoser Alps at nighttime. Seven ice-fishing tents host a total of sixteen high-resolution cameras on arrays to stitch a 400MP image over a sixty-by-fifteen meters field of view. The picture shows a first deployment of this novel field measurement system that is purposefully designed to film millions of snowflakes falling together in slow-motion. The picture is taken with the onboard camera of a small DJI Mavic drone; which is used to calibrate this large-scale cinematographic setup by mounting a spotlight. How come those millions of snowflakes dancing through the turbulent atmosphere display large-scale slender columnar structures and voids, such as emerging in front of the rock formations? Illuminating these mesmerizing snowfall formations falling down the Swiss-alpine night skies will shed new light on these dynamical mysteries of frozen precipitation.

 

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Uploaded on April 14, 2025
Taken on December 15, 2024