1. Members: Mirna K., Petra K. Team leader: Željko A.

2. Light pollution Serious problem in astronomy Specific categories: light trespass, over- illumination, glare, clutter, and sky glow Very negative effect on people, plants and animals

3. Sky brightness Sky Quality Meter –mag/arcsec 2 Tičan: 21.0±0.1 World: –The best: 23.14 (Cherry Springs State Park, USA) –The worst: 12 (Langhus, Norway)

4. All-sky imaging Inox all-sky mirror (spherical) tripod Canon EOS 300D / EOS 20D Lens: 37mm f/4 [Russian] nice, clear weather...

5. How fast does the sky dim?

6. Future plans Tičan – measurements under different conditions Pula – current status at the first Istrian observatrory... Višnjan – sky brightness estimation, map of all the lamps process the data polish the all-sky mirror :)

7. ... and off we go! We might as well go home. With all this stray light, we’ll never see any Messier objects...