Meanwhile the revamped plans of the observatory contained a dome building and an exhibition space. The actual dome and telescope room would be 5 m (16,40 feet) above the ground floor. This room is in contrast with the ‘classic observatories’ square with a ring beam in the ceiling that supports the dome. It was decided to build the dome oneself in order to keep the prices down and to maintain a good relationship with the municipality.
The geological garden Georama was officially occupied on 9 July 1988, with this a special valuable link was added to the chain of attractive elements that makes this colourful municipality to the attraction of Limburg par excellence. Georama is truly a unique and informative scheme. A scientific image of 570 million years geological history is reproduced here in an utmost pleasant style and this in such a way that it can captivate and appeal to both the specialist, the student or the passer-by.
The extension of a planetarium near an existing and well elaborated people’s observatory is a logical extension since a planetarium can show the star-spangled sky as well by day as at night under ideal (cloudless) circumstances. Movements of various celestial bodies can be accelerated in order to make astronomical concepts clear.
There were 3 partners for the construction: the EEC (50%), the Flemish General Commissioner’s office for Tourism (40%) and the local authority of Genk (10%). The EEC gave the permission for this project already in 1987. Two files were prepared, for the planetarium instrument and the construction. Architect Jos Hanssen made a preliminary design and later a final design for the amount of €450 000.
However all plans couldn’t go through because the assumed amount eventually turned out to amount to €600 000. The upper storey wasn’t placed and considered as an option for the future. The secretariat room, the auditorium and the extra toilets weren’t also in the plans anymore. Everything should have been ready at the end of 1990 so that the most modern planetarium of the Benelux could open its doors. At the end of 1989 at least 20% of the subsidized amount had to be spent for the planetarium project. The construction of the planetarium started and it was decided to purchase the medium-sized planetarium SPACEMASTER from East-Germany and a dome with a diameter of 12,5 meter (41,01 feet).
The construction and the install of the instrument clearly needed more time as expected so 1990 wouldn’t be the year of opening, but 1991 would be. The placement of the instrument became a fact in January 1991. The finishing costs were estimated at €125 000 because of the continually rising construction costs
During the summer holidays of 1991 the planetarium started with test shows for various groups, there still weren’t any seats placed. The 90 seats were finally placed in December 1991 and the sound equipment was completed. Meanwhile also lots of work was put in the finishing outside, clinkers and plants were placed in order to make the planetarium accessible and attractive. Host Armand Pien together with about 200 guests could finally declare the planetarium open!
Until May 1992 there were continuously live shows because the full installation wasn’t still available. Seven monitors took each time care for a planetarium show with various themes. After the delivery of the installation it was the intention to extend the automated projections, but with the possibility to give live shows at any time. Especially schools appreciated this because they had cosmology in their syllabus and came to the planetarium with specific questions and assignments.
The Laser was officially opened in 1998 together with the new planetarium show ‘Mars, back to the red planet’. As expected the visitors were impressed by the possibilities of such a laser. The installation of this laser lasted about 5 months.
The People’s observatory of Limburg is also an institutional member of the International Planetary Society.