Overview of the control strategies for the TMT alignment and phasing system

Piotr Piatrou; Gary Chanan

doi:10.1117/12.892253

16 September 2011 Overview of the control strategies for the TMT alignment and phasing system

Piotr Piatrou, Gary Chanan

Proceedings Volume 8149, Astronomical Adaptive Optics Systems and Applications IV; 814906 (2011) https://doi.org/10.1117/12.892253
Event: SPIE Optical Engineering + Applications, 2011, San Diego, California, United States

Abstract

In this paper we present the current status of control algorithm development for the Thirty Meter Telescope (TMT) Alignment and Phasing System (APS).We discuss ways to address the main challenges inherent in the active control of extremely large segmented telescopes: high complexity of the control problem, disentangling the aberrations on the primary, secondary and tertiary mirrors, and the tight requirements for residual errors. We also present preliminary APS performance estimates derived from simulations. In particular, our simulations show that the tomographic aberration disentanglement is only marginally useful for TMT alignment.

Citation Download Citation

Piotr Piatrou and Gary Chanan "Overview of the control strategies for the TMT alignment and phasing system", Proc. SPIE 8149, Astronomical Adaptive Optics Systems and Applications IV, 814906 (16 September 2011); https://doi.org/10.1117/12.892253

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