Dark-Sky Symposium 2005, April 29th - 30th


The Belgian Platform Light Pollution and the International Darksky Association (IDA) Europe welcome you to the CD of the Fifth European Symposium for the Protection of the Night Sky, that was held on April 29th and 30th, 2005, in Genk, Belgium. Here you will find some information concerning this event together with all presenations held on the symposium.

Use of the CD

The speakers on the symposium have given their permission to put their presentations on this CD as background information for your participation on the symposium, or for who was interested in the symposium and buyed this CD later. This does not mean that you can use this material for free. The authors remain sole-owner of their work. When you want to use something of the presentations or documents of these speakers you need to contact them for their permission. That they have given the permission to put it on this CD does not mean that you can use it without their permission!
It is also not allowed to copy this CD for free. When you want to copy for someone else or you want a copy from someone else, this is only allowed after you get the permission from the organisation of the symposium or from the Internation Dark Sky Association!

For each presentation you find on this CD, first a page with the abstract of the presentation is given. On the bottom of the page you find a link to the presentation and/or other papers. By clicking on the link the document will be opened in another page. These can be

You can reach the pages of the presentagion by going the the page of the programme and their click on the information link of the presentation you want to know more about, or by selecting the presentation in the menu in the left of this site.

The presentations and papers can be reached also on the CD in a seperated directory for each speaker.

5th European Symposium, April 29th - 30th 2005, Europlanetarium Genk, Belgium.

The European Symposium for the Protection of the Night Sky is a yearly event of IDA Europe. It is a meeting on the topic of light pollution, of associations trying to reduce light pollution in Europe, scientists, lighting engineers and governments. The 5th edition was held on Friday 29th and Saturday 30th of April 2005 in the Europlanetarium in Genk, Belgium.

A 5th edition was a good reason for a special edition. As the organising association 'Platform Lichthinder' also holds her tenth 'Night of Darkness' on March 19th 2005, the members of Platform Lichthinder are even more encouraged to make this edition a memorable one.

For these reasons, the organisation has tried to work out an extremely strong programme with a lot of attention on new lighting technologies reducing light pollution, results of scientific studies about the effects of light pollution on human health and the environment, and successfull projects which are real examples that lighting can be used without light pollution in Europe. For the best lighting project there was the IDA Europe Outdoor Lighting Award.

The Night of Darkness is a symbolic action and aims to raise awareness amongst the public, companies and governments about light pollution. The past 10 years, this action has known increasing successes. The last edition for example, more than half of the Flemish municipalities participated by switching off a part of their outdoor lighting. This would be achievend by switching off monument lighting, swiching off 1 on 2 lamps during the whole night, switching off light in a region were an activity takes place, or like the city of Merelbeke did, switching of all public lighting on their territory.

At the same time, more then 50 public activities were organised all over Flanders. About 15000 visitors participated. The Night of Darkness has inspired governments to start working on the problem of light pollution. To celebrate this tenth edition, the 5th Symposium for the Protection of the Night Sky was brought to Flanders.


Of course there was made also a group photo of the participants to the symposium. So find your self on this picture:

(c) Werkgroep Lichthinder VVS - webmaster