Statistics – Applications
Scientific paper
Jun 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007natur.447..979b&link_type=abstract
Nature, Volume 447, Issue 7147, pp. 979-981 (2007).
Statistics
Applications
17
Scientific paper
An optical/infrared telescope of 20-100m aperture located on the Moon would be able to observe objects 100 to 1,000 times fainter than the proposed next generation of space telescopes. The infrared region of the spectrum is particularly important for observations of objects at redshifts z>7. The apparent simplicity and low mass of a liquid mirror telescope, compared with a traditional pointable glass mirror, suggest that the concept should be considered further. A previously proposed liquid mirror telescope, based upon a spinning liquid metallic alloy, is not appropriate for infrared applications, which will require a liquid below 130K. Here we report the successful coating of an ionic liquid with silver. The surface is smooth and the silver coating is stable on a timescale of months. The underlying ionic liquid does not evaporate in a vacuum and remains liquid down to a temperature of 175K. Given that there are ~106 simple and ~1018 ternary ionic liquids, it should be possible to synthesize liquids with even lower melting temperatures.
Angel Roger
Borra Ermanno F.
Eisenstein Daniel
Hickson Paul
Seddiki Omar
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