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ALAN Conference Series

ALAN 6 will take place from 16-18.06.2020 in Lleida, Spain.

Night Sky Data to the People!

A new website presents citizen science data

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Our touring exhibition with 15 posters can be borrowed for events!

'Loss of the Night' App

The 'Loss of the Night' app measures sky brightness! Take part in a world-wide citizen science project that measures star visibility and light pollution. The app is free!

City Night Time Lapse

This growing collection of time lapse videos of nights in urban centres provides insights how city lights change throughout the course of the night

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SP12: Specific variation and quantitive characterization of ecological, innovative lighting


The Department of Lighting Technology of the TU-Berlin (TU-Lt) was responsible within subproject 12 to explore the impact of public lighting systems on streets and the usage of innovative illuminants. Different lighting situations were varied systematically and characterized quantitatively.

Effects of a timely variable dimming of lighting scenarios on road users, inhabitants, insects or birds are today scarcly investigated. Therefore, this effect is being observed during research of urban lighting (integration program community) as well as during field research (integration project field). The variation of the spectrum reaches from a part-time night illumination up to a fully adaptive management with movement sensors.

These investigations based on a catalogue of requirements on ecologically-innovative illumination, which had been prepared in cooperation with SP06, SP07, SP08 and SP10. Its criteria also served as a basis for the extensive planning of the experiment, of the investigations in the integration projects and also for judging the results of the sub projects. The catalogue was supposed to help finding a decision on how to plan an outdoor illumination system.

Aim of SP12 was to develop a concept for an ecological-innovative street and pavement illumination. While being energy efficient and having small influence on the surrounding ecosystem, it should also provide safe illumination.

Scientist was Sebastian Schneider
Scientist till end of 2012: Peter Krenz and Sebastian Schade
Leader of subproject was Prof. Dr. Stephan Völker