The observatory is only open in connection with outreach activities.

During the dark months of the year, you can book a presentation for a closed group (in English) or purchase tickets for a star gazing tour (in Danish). A presentation lasts 1½ hours and must be booked two months in advance. Tickets go on sale on the first of each month for the following month.

Read more under Star gazing 2024.

Presentations take place on weekday evenings at the following times:

  • September: 21:00
  • October: 19:00 and 21:00
  • November, December, January, and February: 18:00 and 20:00
  • March: 19:00 and 21:00
  • April: 21:00

During the spring half-term (week 7) and the autumn half-term (week 42), there are two presentations every day, including weekends, at 18:00 and 20:00 (only tickets, in Danish).

The Ole Rømer Observatory is typically opened 15 minutes before a presentation. Please note that the doors close at the start time, and there is no access to the presentation after that.

Buy tickets (in Danish only)

Join our exciting presentations and get a glimpse of distant stars and planets through the observatory's telescope, or learn about astronomy in the 112-year-old building - depending on the weather.

Please note! This season sold out. Ticket sales for next season open 1 August.

Buy tickets for a star presentation at the Ole Rømer Observatory.

The Science Park is open year-round

You can experience the Science Park and the beautiful observatory building from the outside year-round. Explore the park, and discover the various fun and educational outreach initiatives hidden around. The Science Park is part of the recreational area Kongelunden in Aarhus.