https://zenodo.org/records/10356977
Winner in the 2023 IAU OAE Astrophotography Contest, category Still images with smartphones-mobile devices: Star Trail in the Southern Hemisphere with Bortle 4...
star trailsouthern hemispherebortlescale
https://lightpollutionmap.app/
Nov 21, 2025 - Explore the most accurate 2025 light pollution map web app. Check Bortle Scale and SQM data, and discover dark-sky, Milky Way, and aurora spots near you.
light pollution mapbortle scaledark skyamp