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Radical Antarctic telescope could outdo Hubble

09/16/2004 12:00AM

Radical Antarctic telescope could outdo Hubble
“Building an Antarctic telescope could allow Australia to lead the world in astronomy”, said Dr Will Saunders.

Tests by a team from the University of NSW, reported in Nature this week [16 September], show that the ‘Dome C’ site in the Australian Antarctic Territory is by far the best place ever tested on Earth for doing infrared and optical astronomy.

“A telescope there would perform as well as a much larger one anywhere else on Earth. It’s nearly as good as being in space”, said Dr Saunders

At an international conference in Glasgow in June, Dr Saunders presented a concept for an unusual telescope that’s well matched to the special conditions at Dome C, both in its optical design and in the way it’s built.

It looks nothing like other telescopes. Much of it could be built of ‘icecrete’–snow compressed to form blocks as hard as concrete–while its mirrors could be made of the glass used for office windows.

Under the superb atmospheric conditions at Dome C this simple telescope could make razor-sharp images of large areas of sky.

Dr Saunders estimates that his design would cost about a fifth as much as one of the extremely large telescopes now being planned. These have mirrors 30-100 m in diameter and price tags of US$700 million and up. The Hubble space telescope cost five times as much.

“With this simple telescope you could do the exquisite imaging that the ‘extremely large telescopes’ plan to do,” Dr Saunders said. “But, unlike them, this telescope would also be a great survey instrument, able to map the whole sky with Hubble-like clarity.”

Click here for more about this project . -Ed.

NOTE: The above linked page has a sublink to a 20 megabyte animation of the scope design. If you are short on bandwidth, I have edited that down to a 3 meg version .mpg and placed it here:
http://www.williamoptics.com/frostycat.mpg