European Extremely Large Telescope given go-ahead

 http://www.bbc.co.uk/news/science-environment-18396853

Xavier Barcons (Primer Presidente Español del Consejo de ESO) junto a los representantes de los países que financian el gran telescopio:

1. 39.3m-wide primary mirror (M1) is made up of almost 800 segments

1. M2 is 4.2m wide and hangs upside down. It will weigh less than 12t

1. 3.8m-wide M3 sits in a hole in M1. M3 moves with M2 and M4 to focus

1. 2.4m-wide M4 can deform its shape to remove twinkling in stars

1. M5 is 2.6m x 2.1m. It stabilises the light on to the instrument detectors

1. Lasers make artificial stars on the sky to help correct the imaging

1. E-ELT will have two instrument decks; each deck to hold three units

1. The telescope will be sensitive to visible and near-infrared light