File:Hanging high above - the ELT’s secondary mirror fev 2021 ELT4k-8-v2.jpg

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Hanging high above - the ELT’s secondary mirror fev 2021

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Description
English: The innovative five-mirror design of the Extremely Large Telescope requires the largest ever secondary mirror with a 4.2-metre diameter. The secondary mirror together with its support system will weigh 12 tonnes and will hang upside down high above the 39-metre primary mirror, shown at the centre of the image. With the telescope pointing straight up, the top of the secondary mirror support will be 60 metres above the ground. Creating such a large convex mirror is an incredible engineering challenge and required years of planning and precision manufacturing.
Date
Source https://www.eso.org/public/images/ELT4k-8-v2/
Author ESO

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