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Facilities
One of the most ambitious ESO projects is the Overwhelmingly Large Telescope (OWL). If built, it will be the largest optical telescope in the world. Member countries:
Host countries[1]:
Instruments at La SillaSee also La Silla Observatory Of the eighteen telescopes at La Silla Observatory, three are operated by ESO for use by the ESO astronomical community: 2.2 m telescopeThis telescope is loaned from the Max-Planck-Gesellschaft. Its instrumentation includes both a spectroscope and a wide-field CCD imager capable of mapping substantial portions of the sky in a single exposure. 3.6 m telescopeA conventionally designed horseshoe mount telescope, this is mostly instrumented for infrared spectroscopy. New Technology Telescope (NTT)Although the NTT is almost the same size as the 3.6 m telescope, the use of active optics makes it a higher resolution instrument. Also it had, at the time of building, innovative thermal control systems to minimise the telescope and dome seeing. Instruments at ParanalSee also Paranal Observatory The Very Large Telescope (VLT) is the main instrument, composed of four near-identical 8.2 m telescopes. In addition the four main telescopes can combine their light to make a fifth instrument, the VLTI, Very Large Telescope Interferometer. Four auxiliary telescopes of 1.8 m each are being added to the VLTI to make it available when the main telescopes are being used for other projects. The first two of these were installed in early 2004 and 2005. The site also houses the 2.5 m VLT Survey Telescope and 4 m VISTA survey telescope with wider fields of view for surveying large areas of sky uniformly. Instruments at Llano de ChajnantorImage:APEX radio telescope.jpg APEX radio telescope
See also
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