Littleguy80 Posted September 8, 2018 Share Posted September 8, 2018 (edited) These guys put us all to shame when it comes to aperture fever! Casting a $20 Million Mirror for the World’s Largest Telescope https://m.youtube.com/watch?v=M2f4zepwcy8 Edited September 8, 2018 by Littleguy80 7 Link to comment Share on other sites More sharing options...
scarp15 Posted September 8, 2018 Share Posted September 8, 2018 Interesting video, quite a process. 1 Link to comment Share on other sites More sharing options...
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