[guide.chat] britain spends millions of pounds

  • From: vanessa <qwerty1234567a@xxxxxxxxx>
  • To: "GUIDE CHAT" <guide.chat@xxxxxxxxxxxxx>
  • Date: Tue, 5 Mar 2013 19:34:55 -0000

UK injects £88m into Euro bid to build Hubble-thrashing 'scope
   
Building work starts on world's biggest space-gazer
By Anna Leach . Get more from this author

Posted in Science, 5th March 2013 14:03 GMT
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The UK will bung £88m towards the European Southern Observatory's £1bn project 
to build the world's largest telescope. The cash injection is on top of 
Blighty's annual £18m contribution to the ESO.

Construction of the ground-based European Extremely Large Telescope is underway 
and is expected to take ten years to complete. We're told the 
enormo-contraption will produce images 16 times sharper than the Hubble space 
'scope, and should help answer some of the biggest questions facing modern 
astronomy.


What the European Extremely Large Telescope is expected to look like
The E-ELT has a 39m-diameter primary mirror - its collection area is 47 
nanoWales - and is capable of collecting at least 15 times more light than any 
existing telescope, we're told. The reflector-type scope is made of 798 
1.4m-wide hexagonal mirror segments and features a novel design that results in 
exceptional image quality.

Eight projects to design special cameras and spectrographs to analyse the data 
collected by E-ELT are being considered. It will be capable of picking up 
spectrum from visible light to infrared.

Its location - 3,000m (9,800ft) up in the Cerro Armazones in Chile - allows the 
equipment to avoid atmospheric effects that plague lower-sited observatories. 
Specialised actuators, or pistons, move each individual hexagon panel to 
precisely control the shape of the mirror, compensating for effects on the 
light reaching the telescope.

Engineers are slicing off the top of the Chilean peak to get a flat surface on 
which to build the E-ELT, and they hope the facility will be completed by 2023.

Ground telescopes are a major priority for astronomers, who use them to study 
planets and their stars, the "first objects" in the universe, super-massive 
black holes, and the nature of dark matter and dark energy that dominate the 
universe.

Studies of the universe's first galaxies help define our understanding of the 
creation of the universe and the laws of physics.
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