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How telescope is made - material, manufacture, making, history, used, parts, components, dimensions, procedure
Astronomy Equipment Guide - Astronomy Reference Guide on Sea and Sky
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World's largest optical telescope - Arup
European Extremely Large Telescope - Ramboll Group
Liquid-mirror telescope - Wikipedia
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How do you build a mirror for one of the world's biggest telescopes?
The Design of Extremely Large Telescopes | WIRED
/cloudfront-eu-central-1.images.arcpublishing.com/prisa/S64KQHWKURF5DK65MHSEGY4J4M.jpg "What are those giant telescopes looking at? | Science & Tech | EL PAÍS English Edition")