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Corning Mirror Blank 'Sagging' Complete

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CORNING, N.Y., June 24 -- Corning Inc. announced it has completed the "sagging" process of the 4.2-meter ULE mirror blank that will serve as the primary mirror for Lowell Observatory’s Discovery Channel Telescope (DCT). ULE is a glass material that exhibits no dimensional changes over extreme temperature variations; it is generally considered to be one of best in the world for astronomical optics. The sagging process consisted of creating a form made of refractories that meet the concave-convex shape requirements of mirror designers. The ULE mirror blank was positioned over the form and...Read full article

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    Published: June 2005
    Glossary
    photonics
    The technology of generating and harnessing light and other forms of radiant energy whose quantum unit is the photon. The science includes light emission, transmission, deflection, amplification and detection by optical components and instruments, lasers and other light sources, fiber optics, electro-optical instrumentation, related hardware and electronics, and sophisticated systems. The range of applications of photonics extends from energy generation to detection to communications and...
    CommunicationsCorningDiscovery Channel TelescopeenergyLowell ObservatorymirrorsNews & FeaturesOpticsphotonicssaggingSemiconductor OpticsULE mirror blank

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