Why are the largest visible-light telescopes in the world made with mirrors rather than lenses?

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23-07-2018
Physics

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Why are the largest visible-light telescopes in the world made with mirrors rather than lenses?

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sulaimanabbott sulaimanabbott · Answer 1 · 2018-07-23T10:55:46+02:00

sulaimanabbott sulaimanabbott

23-07-2018

Light distorts through lenses more then it does on mirrors. Images are harder to make out and mirrors are cheaper then all the glass they need for the lenses especially because of contorting the lenses.

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