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does that Acronym stand for European Excessively Large Telescope? ...Enviably Large, Enormously large, Elephantine Lens...I must admit I have never understood the physics of why we cannot use a myriad of small mirrors bolted together. I have three aluminium discs on my desk that are manufactured to an incredibly low error tolerance and yet they are mass produced and fairly cheap (HDD platers - now used as coasters). I will read that ESO prgramme with interest - thanks