The Sunrise III mission is an international research project with the aim of investigating the physical processes in the Sun’s atmosphere. At the Fraunhofer IST, special filters were coated which are essential components of the scientific instruments on board the balloon-borne observatory. These high-precision filters enable solar observations to be performed with previously unattainable accuracy, thereby contributing towards research into solar activity and its influence on space weather. We spoke to our colleague Stefan Bruns, who was involved in the work at the Fraunhofer IST.
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