Special Astrophysical Observatory of the Russian Academy of Science

The Special Astrophysical Observatory is a research facility in the mountains housing two main telescopes: the RATAN-600 radio telescope and the BTA-6 optical telescope. The complex sits at 2070 meters elevation in a remote area where observations remain unaffected by light pollution.

The facility was founded in 1966 and marked an important step in Soviet astronomical research. The optical telescope system was installed in 1975 and shaped the observatory's work for decades to come.

The facility became a symbol of international scientific collaboration during the Cold War era and continues to host researchers from around the world who work together on shared projects.

Visitors can join guided tours to see the telescopes and learn how researchers work at the site. The facility also has a cinema room for documentaries and a café area for breaks during your visit.

The optical telescope has a primary mirror weighing 42 tons, making it one of the world's heaviest mirrors. This massive mirror sits inside a 53-meter-high dome that shields it from the elements.

Location: Karachay-Cherkessia

Inception: 1966

Website: http://sao.ru

GPS coordinates: 43.64682,41.44045

Latest update: December 7, 2025 20:42