Russia`s Space Forces optical tracking facility, the OKNO complex (english:Window) near the town of Nurek in central Tajikistan. OKNO is a part of the Strategic Rocket Forces (SRF) space monitoring system , its task is to detect space objects, determine their orbit and trajectory, and identify their national affiliation.Experts regard Okno center in Tajikistan as Russia`s most valuable military object on the territory of the republic. Located in the Sanglok mountains 2,200 meters above the sea level, the complex in question is one of the most efficient means of the airspace control system of the Russian Space Forces. The skies above it are clear almost all year round. The Okno is capable of tracking objects 40,000 kilometers (24,800 miles) from Earth, the space forces said in a statement carried by the Interfax-Military News Agency when it was put on duty in 2002. The facility involves telescope-like equipment housed in several large spheres, similar to the U.S. GEODSS system. Pictured: spheres with telescopes inside