Lunar Eclipse at The Round Tower

Experience the lunar eclipse from Europe’s oldest functioning observatory building. The Astrobar is open, and our astronomers are ready to guide you as darkness falls

On September 7th, the Sun, Earth, and Moon align perfectly, resulting in a total lunar eclipse that can be observed from Denmark. A total lunar eclipse occurs when the full moon passes through Earth’s shadow. Along the way, it looks as if someone is taking larger and larger bites out of the Moon, but during the total eclipse, the Moon does not turn black—it turns red. This is why the phenomenon is also called a “Blood Moon.” The effect is caused by Earth’s atmosphere, which bends the light and mainly allows red light to pass through.

We open the observatory at 7:30 PM and invite you to engaging talks about the phenomenon, the Blood Moon, and the chance to observe the lunar eclipse through the old telescope.

Enjoy the view of the sky wrapped in a warm blanket on the viewing platform—we hope for dry weather. Refreshments will be available for purchase, as the Star Bar will be specially open this evening.

The lunar eclipse begins at 7:44 PM, and at 8:11 PM the eclipse is total. The Round Tower will remain open until 10:00 PM.

Tickets are limited, so you must purchase your ticket in advance. Any remaining tickets will be sold at the door on the evening of the event.

The event will take place regardless of the weather, but in case of rain, the observatory dome cannot be opened.
The price is regular admission: 60 DKK for adults, 40 DKK for students, and free for children.