An ELT made of cardboard in your garden?

I am calling myself a Planetary Astronomer, essentially because I use ground-based telescopes to study our solar system bodies. Even if I often write posts on this blog ¬†about the wonderful results brought to us by space missions, space stations and other space-releated projects, my heart and my work are mostly dedicated to pushing the limit of ground-based telescopes and their instruments. Extremely Large Telescopes (or ELTs), ground-based telescopes with an aperture larger than 30m are without any doubt the next giant leap in the development of astronomy. I always wondered what it would be to be close to one of these giants, now I know…