National Astronomical Observatory of the Chinese Academy of Sciences, 2nd new results released three astronomical observations, then the milky way stars do "census" data, quick bursts, black hole.
National Astronomical Observatory of the Chinese Academy of Sciences spokesman Xue Suijian says:
First China construction, the current spectrum Gets the highest telescope in the world, "Guo shoujing telescope" (LAMOST, large sky area multi-object fiber spectroscopic telescope), has been successful in winning high quality stars 4.62 million, "than all known spectroscopic sky survey in the world gets more total data". Just Cavalli iPhone 6 cases
According to reports, the LAMOST is a lying in the field of view is 5 degrees North and South in the direction of the star ceremony reflecting Schmidt telescope. Because of its wide field of view, 4,000 fibers can be placed at the focal plane will be respectively transferred to more than one of the distant object spectrometer, as well as their spectra, spectrum Gets the highest telescope in the world. It will be placed in the National Observatory's Xinglong station. Project investment of 235 million Yuan.
LAMOST occupied three 6-10-story cylindrical turret. Starlight through the reflection of two mirrors, fiber to 16 spectrometer at the receiving end. Like a Prism spectrometer, the separation of light into a spectrum, from 32 sensitive CCD camera records.
Dome opens at night, with the Earth the LAMOST, swept the sky in the northern hemisphere. On the lens of the distant stars into the LAMOST, begins with a blurry, LAMOST adjusted quickly, let the receiver appears a clear spot.
LAMOST's giant mirrors using Active optics. Known as active optics, is the initiative to change the shape of lenses, to overcome gravity, temperature and wind-mirror itself deformation effects on image, making the image more clearly. And application in an optical system such as LAMOST two large diameter segmented mirror, is unprecedented. Just Cavalli iPhone 6 Case
https://www.youtube.com/watch?v=BISfMD-fk6I
Exact tuning a large mirror is difficult. LAMOST Ma mirrors formed by 24 hexagonal mirrors mosaic, such as honeycomb; each mirror 1.1 meters long, 25 mm thick; the entire Ma mirror 5.7 meters long, 4.4 meters wide. Mb mirror length is similar to Ma, 75 mm thick, is spherical.
International fiber-optic panels perforated insert fiber and robots place the fibre only to hundreds of ribs, LAMOST greatly increase fibre number. Imaging focal plane above 1.75 metres across, numerous 4000 fiber distribution unit (International device only 640). 4000 fiber automatic positioning system in a matter of minutes the fibre by Star position accurately, maximum positioning error of only 40 microns.
In this way, each observation can be obtained as many as 4,000 celestial spectra, Yan Jun of the Chinese Academy of Sciences, the National Observatory said, "start is equivalent to 4000 telescope."
LAMOST complex design and manufacturing, all completed by Chinese scientists. Famous experts, active optics of the telescope inventors Wilson said: "LAMOST is the most advanced and ambitious application of active optics, its success in the future is of fundamental importance to the development of the telescope. "
[Article correction]
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Tags: astronomy Science and technology
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