Big bang makes way for 'world's biggest eye on the sky'
Did you happen to hear a very big bang around 7pm on Thursday 19 June? Well, that was the top of a mountain in Chile being blown clean off to make way for the world's largest telescope - the aptly-named European Extremely Large Telescope (E-ELT).
The victim of the decapitation was the 3 000-metre-high Cerro Armazones
in the Atacama Desert. The perpetrator was the European Southern
Observatory (ESO). The detonation aimed to blow away almost a million
tonnes of rock and thus lower the mountain top by 40 metres. The
resulting plateau will be the new perch for the E-ELT.
The European Extremely Large Telescope will be a single telescope
with a primary mirror 39 metres across - four times larger than any
other telescope yet constructed. The Guardian elaborated on the scale of
the telescope: 'It will collect light about 15 times faster than any
other telescope, and will create images 16 times sharper than even the
Hubble Space Telescope.' It will allow us to make direct observations of
nearby planets around other stars. As Euronews tells us: 'The E-ELT
science team reckon they have a good chance of being the first to
directly observe little blue dots like Earth, if they exist'.
The detonation in June was just a baby step in a massively ambitious
project on difficult terrain that will take at least a decade to
finish. The Cerro Armazones civil works to make way for the telescope
started in March 2014 and are expected to take 16 months. These include
the laying and maintenance of a paved road, the construction of the
summit platform and the construction of a service trench to the summit.
ESO project manager Roberto Tamai tells Euronews that the building
of the telescope in the Atacama desert - one of the driest and most
remote areas on Earth - is nothing short of a 'total nightmare'. But the
ESO knows what its getting into - it has a history of building
telescopes with comically explicit names in this arid Chilean desert.
The ESO's Paranal facility, also in Atacama, is home to the Very Large
Telescope (VLT).
If VLT is a big project then E-ELT is a mega project. Its first
light is planned for 2024 when, according to ESO, it will then take on
the gargantuan task of tackling the biggest astronomical challenges of
our time: 'The giant telescope is expected to allow the exploration of
completely unknown realms of the Universe - it will be: "the world's
biggest eye on the sky".'
published: 2015-01-23