Osservatorio astronomico Fondation Clément Fillietroz

The Osservatorio astronomico Fondation Clément Fillietroz is a research facility located at 1,675 meters (5,495 feet) elevation in Saint-Barthélemy, equipped with modern telescopes for studying celestial bodies. The Alpine location offers favorable conditions for astronomical observation and sky research.

The foundation was established to conduct scientific research on astronomical phenomena in a mountain setting. Its development and operations received backing from the Autonomous Region of Aosta Valley and the Municipality of Nus.

The facility opens the world of astronomy to visitors through its education programs and public outreach activities. The foundation actively engages with schools to spark interest in celestial objects and space research.

Visitors can book daytime tours and evening observation sessions, with available times shown on the foundation's website. Plan ahead and bring weather-appropriate clothing, as the high elevation means cool conditions even in warm seasons.

The facility focuses on studying active galactic nuclei, a specialized research area found in few observatories. In addition, it manages the nearby Planetarium of Lignan to extend education and engagement with the public.

Location: Aosta Valley

Location: Nus

Elevation above the sea: 1,675 m

Website: http://oavda.it

GPS coordinates: 45.78970,7.47852

Latest update: December 14, 2025 11:42