Very Large Telescope

The Very Large Telescope (VLT) is a telescope operated by the European Southern Observatory on Cerro Paranal in the Atacama Desert of northern Chile. The VLT consists of four individual telescopes, each with a primary mirror 8.2m across, which are generally used separately but can be used together to achieve very high spatial resolution. The four separate optical telescopes are known as Antu, Kueyen, Melipal and Yepun, which are all words for astronomical objects in the Mapuche language. The telescopes form an array which is complemented by four movable Auxiliary Telescopes (ATs) of 1.8 m aperture.

The VLT operates at visible and infrared wavelengths. Each individual telescope can detect objects roughly four billion times fainter than what can be detected with the naked eye, and when all the telescopes are combined, the facility can achieve an angular resolution of about 0.001 arc-second. This is equivalent to roughly two metres at the distance of the Moon.

The VLT is the most productive ground-based facility for astronomy, with only the Hubble Space Telescope generating more scientific papers among facilities operating at visible wavelengths. Among the pioneering observations carried out using the VLT are the first direct image of an exoplanet, the tracking of individual stars moving around the supermassive black hole at the centre of the Milky Way, and observations of the afterglow of the furthest known gamma-ray burst.

Read more about Very Large TelescopeGeneral Information, Science With The VLT, In Popular Culture, Gallery

Other articles related to "very large telescope, telescope, large, telescopes, large telescopes":

Very Large Telescope - Gallery
... Huge storm on Saturn observed by ESO's Very Large Telescope The Sombrero Galaxy as seen by the VLT's FORS1 instrument Image of the central 5,500 light-years wide ...
Andrew Carnegie - Biography - Retirement - 1901–1919: Philanthropist
... Ellery Hale, who was trying to build the 100 inch (2.5 m) Hooker Telescope at Mount Wilson, and donated an additional ten million dollars to the Carnegie Institution with the following suggestion ... of the debt we owe them by revealing more clearly than ever to them the new heavens." The telescope saw first light on November 2, 1917, with Carnegie still ... He also donated large sums of money to Dunfermline, the place of his birth ...
Paranal Observatory - Telescopes - Very Large Telescope
... The Very Large Telescope (VLT) consists of four 8.2 m telescopes operating in the visible and infrared ... These telescopes, along with four smaller Auxiliary telescopes, are also combined to operate as an optical interferometer on certain nights of the year ... All of the 8.2 m telescopes have adaptive optics and a full suite of instruments ...
European Southern Observatory - ESO's Observing Sites in Chile - Paranal - Very Large Telescope
... facility at Paranal is the VLT, which consists of four near-identical 8.2-metre Unit Telescopes (UTs), each hosting two or three instruments ... These large telescopes can also work together, in groups of two or three, to form a giant 'interferometer', the ESO Very Large Telescope Interferometer or VLTI, allowing ... The other telescopes followed suit in 1999 and 2000, thus making the VLT fully operational ...
Optical Aberration - Chromatic or Color Aberration
... powers required by achromatism consequently he constructed large reflectors instead of refractors ... in 1754 and by Dollond in 1757, who constructed the celebrated achromatic telescopes ... (See telescope.) Glass with weaker dispersive power (greater ) is named crown glass that with greater dispersive power, flint glass ...

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