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Control and support of 4-meter class secondary and tertiary mirrors for the Thirty Meter Telescope

2006; SPIE; Volume: 6273; Linguagem: Inglês

10.1117/12.672626

1996-756X

Dan Blanco, Myung‐Haing Cho, Larry Daggert, Phil Daly, Joe DeVries, J. H. Elias, Bruce C. Fitz-Patrick, Ed Hileman, Mark Hunten, Ming Liang, Mark Nickerson, Earl T. Pearson, Dave Rosin, Mark J. Sirota, Larry M. Stepp,

Optical Systems and Laser Technology

The Thirty Meter Telescope (TMT) project is a partnership between ACURA, AURA, Caltech, and the University of California. The design calls for a 3.6 m diameter secondary mirror and an elliptical tertiary mirror measuring more than 4 m along its major axis. Each mirror will weigh more than two metric tons and must be articulated to compensate for deformation of the telescope structure. The support and control of these "smaller optics" pose significant challenges for the designers. We present conceptual designs for active and passive figure control and articulation of these optics.