Light Pollution Map

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The map displays VIIRS/World Atlas/Clouds/Aurora/IAU observatories and the user SQM measurements.

The primary use is to show VIIRS/DMSP data in a friendly manner, but over time it also included some other interesting overlays that concern light pollution like SQM/SQC, World Atlas 2015 zenith brightness, clouds, aurora and IAU observatories. If you have a permanent SQM reader installed you can add it to the map by sending me an e-mail.

Please send comments and requests for new features via email (look under help)

Functionalities:
- VIIRS, Sky Brightness, World Atlas 2015, Cloud coverage and Aurora forecast layers
- VIIRS and Sky Brightness layers can be displayed in color blind friendly colors
- Road & Satellite base maps
- Cloud animation for the last 12 hours
- Get detail radiance and SQM values from layers at a click. For Sky brightness/World Atlas 2015, you also get Bortle class estimation.
- SQM, SQM-L, SQC, SQM-LE, SQM readings submitted by users
- International dark sky parks overlay
- Submit your own SQM (L) readings
- Observatories layer
- Save your favorite locations
- Distance measurement tool with azimuth angle report
- All-sky view of light pollution with real horizon
- Offline mode (Sky brightness map and a base map are saved to your device, so it will be displayed when you are offline)

Quoi de neuf dans la dernière version ?

- Sky brightness simulation: added a function that generates an all-sky image that takes into account the drawn polygon radiance modification. That way you can see the effect of the modification on the sky brightness distribution across the entire sky, not just at the zenith.
- Added NELM as an alternative unit for sky brightness display for Sky brightness and World Atlas overlays. You can toggle between NELM and MPSAS by clicking the 'SQM' text in the point info window.
- Added a 'Save' button to the generated all-sky image, so you can save it directly to your device.
- Other minor fixes.