1. Light Pollution Analysis of the Istrian Peninsula Ivica Crljenica, University of Zagreb ICPS 2003, Odense - Denmark

2. Light Pollution is all the light that doesn’t illumiates what it should It is mainly produced by improper public lightning

3. Zagreb, 11:54 PM Los Angeles, 00:26 AM Light Pollution examples in the world… …and in our country

4. Light pollution in Europe in 1997… …and the prevision for 2025.

5. Measurement setup Increased mobility Larger analysis area – app 200 km 2 /night

6. CCD camera - 250 s exposition GPS device Data Aquisition

7. Raw Data

8. Image processing Data Analysis Data interpolation

9. Analysied area app 900km 2

10. 2003.2002. Comparison with last year’s results Difference:

11. 3D view of all measurements 2003. 2002. Difference:

12. Sky Glow decrement by radius city boundary

13. Model of Sky Glow propagation Propagation model: I=I 0 /r q r < 1km q=0.020±0.007 R q =35% r > 1km q=0.57±0.05 R q =8.77%

14. Population distribution Sky Glow – Population dependancy Sky Glow distribution

15. Sky Glow Local Monitoring group website: www.fizika.org/sglm Ivica Crljenica, University of Zagreb icrljen@fizika.org