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It is also recommended that the interiors of the dome be chilled during the day to control temperature variations that could deform the mirrors and the steel of the telescope.
Each keck mirror segment has a thin aluminum layer coating which allows outstanding light reflection from ultraviolet wavelengths, via the visible spectrum into the infrared. Unlike the automotive mirrors that are coated on the rear surface, telescope mirrors are coated on the front surface. Due to the nature of aluminum to degrade after sometime, it is essential to strip off the old coating and freshly reapply.
Some of the research projects that keck is involved in include: discovery of galaxies at the edge of the universe using gravitational lenses, looking for atomic gases in the gap between galaxies, determining the rate of expansion of the universe and the study of earth-mass objects. Recently, a team of astronomers from Caltech have discovered 18 new authentic exoplanets using the keck telescope. (European southern...
(Astronomy news)
The twin keck can also work as an interferometer hence it can attain astonishing resolutions of 5 miliarcseconds. Other concepts like the multi-object Spectrometer for Infrared Exploration (MOSFIRE) and the Next Generation Adaptive Optics (NGAO) are being discussed in relation to development of the keck so that it remains firmly placed at the forefront.
References
W.M. Keck Observatory, (2012).The Observatory. Retrieved February 26, 2012 from http://keckobservatory.org/about/the_observatory
European southern observatory, (2012). Telescopes and Instrumentation. Retrieved February 26, 2012 from http://www.eso.org/public/teles-instr.html
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