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Big Photonics Advances Build and Power Big Telescopes

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Hank Hogan, Contributing Editor, [email protected]

Bigger aspheric mirrors enable astronomers to see farther into space – but they require special designs. For astronomers, bigger is better: In general, the scientific value of a telescope scales to the fourth power of its diameter. So, doubling the size boosts scientific worth 16 times – assuming no limiting factors. Artist’s impression of the 39-m European Extremely Large Telescope sitting atop Cerro Armazones in the Chilean Andes. Photo courtesy of European Southern Observatory Given that, good times loom. Thanks to photonics innovations and other advances,...Read full article

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    Published: November 2013
    Glossary
    astronomy
    The scientific observation of celestial radiation that has reached the vicinity of Earth, and the interpretation of these observations to determine the characteristics of the extraterrestrial bodies and phenomena that have emitted the radiation.
    astronomyBasic ScienceChileDae Wook KimESOEuropean Southern ObservatoryExtremely Large TelescopeFeaturesGiant Magellan TelescopeHank HoganHawaiiImagingJochen LiskeLarry SteppMarc CayrelmirrorsOpticsPatrick McCarthyRoland GeylSagem-REOSCSteward Observatory Mirror LabtelescopesThirty Meter TelescopeUniversity of Arizona

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