Trollhättan, a city in Sweden, sought to evaluate its urban lighting system, especially at night, to assess safety and light pollution levels. Drönartjänst Sverige AB, a Swedish company specializing in drone services, was commissioned to conduct a night drone mapping project to create an orthomosaic of the city center. By capturing aerial images at night, they aimed to analyze light pollution levels and assess the effectiveness of the lighting system, particularly in areas with waterways.