I compile a monthly newsletter of astronomy related press releases (in English) and distribute them to the amateur astronomy club Vendelinus at the Europlanetarium in Genk, Belgium, and to friends. Online copies can be found here.
I frequently give talks to amateur astronomy clubs on a variety of subjects. Here I give a selection of presentations (in Dutch).
I was a member of the youth astronomy club Descartes at the Europlanetarium in Genk, Belgium. Here are some bits and bobs of material I wrote back then (in Dutch).
Descartes Deep-Sky Website
Tom Corstjens and I wrote and designed a website on deep-sky observations of members of the youth astronomy club Descartes (in Dutch).