The Roden Crater Telescope by jurvetson Portal to a magical overnight at Roden Crater with friends,
The Roden Crater Telescope by jurvetson Portal to a magical overnight at Roden Crater with friends, and the artist James Turrell. 50 years in the making, it’s an art work tunneled through an extinct volcano, aligned with celestial events. I noticed the crescent moon perfectly centered down the 1000’-long keyhole tunnel. I was excited to share with the group that almost missed it. The tunnel is purposely built to align with events like this, and it took a year to dig with a tunnel-boring-machine. Craziest of all - it has a 10-ft. diameter lens that can roll out midway down the tunnel, forming the largest refracting telescope on Earth. https://flic.kr/p/2mHj8FJ -- source link
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