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Conferences > OFT > 2002 > OMD > OMD2

Optics for the Large Binocular Telescope

H. M. Martin, R. G. Allen, J. H. Burge, L. R. Dettmann, J. M. Hill, D. A. Ketelsen, S. M. Miller, and J. M. Sasian

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Abstract

The two primary mirrors for the Large Binocular Telescope are the largest mirrors ever made. Lightweight honeycomb mirrors 8.4 m in diameter and f/1.14, they present a number of challenges in fabrication and testing. Both mirrors have been cast in a spinning furnace at the Steward Observatory Mirror Lab. The first has been generated, and is currently being polished with a 1.2 m diameter stressed lap that bends to match the varying curvature of the mirror surface. The primary mirrors are matched with adaptive secondary mirrors to provide diffraction-limited imaging.

© 2002 Optical Society of America

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