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Checking the mirror for Large Binocular Telescope

Checking the mirror for Large Binocular Telescope

R110/0249

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Credit

DAVID PARKER / SCIENCE PHOTO LIBRARY DAVID PARKER / SCIENCE PHOTO LIBRARY

Caption

LBT mirror. Researcher Roger Angel with the mirror for the Large Binocular Telescope (LBT). This 8.4- metre telescope mirror is the largest ever cast. The mirror's borosilicate glass has a honeycomb design which makes it strong but light. It was cast by a process of melting, moulding & spinning in a rotating oven. The mirror is then finely polished. Two identical mirrors will be placed on a common mount in the LBT constructed on Mount Graham in Arizona, USA. Together they will have the light-collecting power and image sharpness of a much larger single mirror. Roger Angel is director of the University of Arizona Mirror Laboratory in Tucson, USA. Photographed in 1997.

Release details

Model release not available. Property release not required.

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