The Dutch Occultation Association promotes observations of celestial occultation phenomena in the Netherlands.
Among the most frequently observed events are:

• occultations of stars and planets by the Moon
• occultations of stars by asteroids
• mutual occultations / eclipses of the Jovian
  and Saturnian's moons

Everyone equipped with even a small telescope, a stopwatch and a (DCF77) time signal receiver can record observations of this nature. The observations are of scientific value! 

We organised the ESOP XXV on 25-27 august 2006
 XXVII^th European Symposium on Occultation Projects

29 - 30 - 31 August 2008
Drebach Germany