Humanity is thousands of years peering into the sky. And every year we can see farther and clearer. Over the past 50 years of the space age technology developed not only capable to lift a man into space. Take an ancient invention — the telescope. His technical device has changed quite strongly, but the operating principle and basic elements — all the same. Not every knows that the mirrors for the largest telescopes
I deliberately talked about it today, 12 aprelya.Eto — a great day, everyone recognizes that, in whom left a little bit of patriotism. April 12, 1961 man first left the Earth one and a half hours spent in space, Yuri Gagarin. This, by today's standards, a short flight opened a new era — the man began to explore the space. A little step for a small step, slowly but surely, we are moving further and further out into the universe. Russian scientists and astronauts, by the way, is still at the forefront of space exploration.
Further progress in the near-Earth space and not directly dependent on the success of scientists studying it. With the help of a telescope BTA (Big Telescope Alt-azimuthal) in 2011, our astronomers
Interestingly, the BTA, located in Zelenchukskaya Observatory, "the old man", created back in 1975. The diameter of the main mirror — 6 meters. So far, this is the largest telescope of Eurasia, and from 1975 to 1993 he was the largest telescope in the world. The most important and difficult part of the manufacture of the telescope — a mirror. It was made in Moscow on Lytkarino Optical Glass Factory, which is now part of the holding "Schwabe" goskorporatsiiRosteh. For its time, the establishment of such a mirror was a big project. The difficulties caused not only the process of making and polishing (it took 16.5 months and 15,000 carats of diamond tools), but also delivery. Weighed the finished mirror azh42 tonny.Snachala to determine the optimal technical conditions of carriage over the entire route was driven cargo-delivery imitator.Dlya mirrors into the observatory had dazherasshiryat some roads Karachay-Cherkessia.
Projects of this complexity Lytkarino carries to this day. Vision of Eurasia's largest telescopes are made here in the suburbs. In 2006 he opened an Indian Telescope Observatory Giravali. We put it to a mirror diameter of 2.05 m, and the assembly of the telescope engaged British company TTL. Small coin placed at a distance of 2 km, with this telescope can be considered in great detail.
Giravali Observatory, India:
In 2013 Lytkarinsky optics will work in the Thai national telescope, which will be the second largest in Asia. Prior to this, scientists Tailandaprihodilos content telescope-only grit diameter of 0.5 m
Thai National Telescope:
Another Asian giant (diameter primary mirror — 3.7 m), for which the optics made in Litkarino, — DevasthalOpticalTelescope, telescope observatory in Devasthale. It is set in India, near the town of Nainital, and also open in 2013. The instrument will be the largest in Asia. Thanks to him, the scientists at the observatory Devasthale will study the chemical evolution of the Milky Way and the movement of distant stars in our galaxy, solar system objects, and more. The telescope will be optimized for spectroscopic observations.
Another new project, which involved our scientists — Chinese telescope LAMOST (Large multi-purpose spectroscope to observe large areas of the sky), which is located 170 km from Beijing. It is able to record the spectra of more than 10,000 stars in the night and the stars more than 2 million a year. Diameter mirrors — 4.4 m and 5.72 m for one of the mirrors in the Litkarino produced 40 segments for another — put 26 pieces. In the manufacture of optics for this technology was applied segmented telescope mirrors, which will soon be used to create extremely large telescopes — with a mirror diameter
The world's largest spectroscopic telescope LAMOST:
Russia will be able to participate fully in the implementation of the most ambitious space projects of the future: we have both the technology and the people who develop them.