A novel Antarctic telescope with 16-m diameter mirrors would far outperform the Hubble Space Telescope, and could be built at a tiny fraction of its cost, says a scientist from the Anglo-Australian Observatory in Sydney, Australia.
Tests by a team from the University of New South Wales, reported in the journal ‘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. Will Saunders of the Anglo-Australian Observatory.
At the SPIE Astronomical Telescopes and Instrumentation 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.
Helen Sim | alfa
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Physicists working with Roland Wester at the University of Innsbruck have investigated if and how chemical reactions can be influenced by targeted vibrational excitation of the reactants. They were able to demonstrate that excitation with a laser beam does not affect the efficiency of a chemical exchange reaction and that the excited molecular group acts only as a spectator in the reaction.
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Optical spectroscopy allows investigating the energy structure and dynamic properties of complex quantum systems. Researchers from the University of Würzburg present two new approaches of coherent two-dimensional spectroscopy.
"Put an excitation into the system and observe how it evolves." According to physicist Professor Tobias Brixner, this is the credo of optical spectroscopy....
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