# Iesna

Project, Worldwide.

> Browser-based light pollution simulator using real photometric data
>
> — in its own words, from iesna.eu

- Website: https://iesna.eu/?wasm=skyglow_demo
- Listed since: 2026
- launched: 2026-05-02
- launch post: https://news.ycombinator.com/item?id=47984734
- hn score: 21
- Last verified: 2026-05-02


## Sources

- Hacker News, "Show HN" — https://news.ycombinator.com/item?id=47984734, read 2026-05-02

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startup.is · https://startup.is/projects/iesna · open data: /api/v1, /llms.txt