Nançay Radio Observatory

The Nançay Radio Observatory is an observation facility in central France equipped with various radio telescopes, including a decimetric system with a spherical and planar mirror setup for observing hydrogen gas in space. The site houses multiple telescope networks such as LOFAR and NenuFAR that allow researchers to study phenomena ranging from solar activity to galaxy formation.

The facility developed from radio technology advances after World War II, with its main telescope completed in 1965 on a 150-hectare woodland site. Since then, it has expanded by adding modern networks and became a leading center for radio astronomy in Europe.

The visitor center presents astronomy exhibitions and operates a planetarium where groups can learn about the research conducted here. This space helps people understand how radio telescopes work and why they matter for studying the universe.

The site sits in a quiet woodland area and is accessible to visitors who want to spend time exploring the exhibitions and planetarium. It's worth checking in advance if tours or special events are scheduled, since the facility is located in a remote setting.

The radio heliograph consists of 47 antennas arranged in a T-shape, capturing up to 200 radio images of the Sun per second. This system allows scientists to track solar flares and energy release in unprecedented detail.

Location: Centre-Val de Loire

Location: Nançay

Inception: 1995

Website: http://obs-nancay.fr

GPS coordinates: 47.38042,2.19503

Latest update: December 9, 2025 18:42