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Wavefront sensing and control performance modeling of the Thirty Meter telescope for systematic trade analyses

Nissly, Carl and Seo, Byoung-Joon and Troy, Mitchell and Chanan, Gary and Roberts, Scott and Rogers, John (2014) Wavefront sensing and control performance modeling of the Thirty Meter telescope for systematic trade analyses. In: Modeling, Systems Engineering, and Project Management for Astronomy VI. Proceedings of SPIE. No.9150. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 91500S. ISBN 9780819496188. http://resolver.caltech.edu/CaltechAUTHORS:20180718-072938786

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Abstract

We have developed an integrated optical model of the semi-static performance of the Thirty Meter Telescope. The model includes surface and rigid body errors of all telescope optics as well as a model of the Alignment and Phasing System Shack-Hartmann wavefront sensors and control algorithms. This integrated model allows for simulation of the correction of the telescope wavefront, including optical errors on the secondary and tertiary mirrors, using the primary mirror segment active degrees of freedom. This model provides the estimate of the predicted telescope performance for system engineering and error budget development. In this paper we present updated performance values for the TMT static optical errors in terms of Normalized Point Source Sensitivity and RMS wavefront error after Adaptive Optics correction. As an example of a system level trade, we present the results from an analysis optimizing the number of Shack-Hartmann lenslets per segment. We trade the number of lenslet rings over each primary mirror segment against the telescope performance metrics of PSSN and RMS wavefront error.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.1117/12.2057157DOIArticle
Additional Information:© 2018 Society of Photo-optical Instrumentation Engineers (SPIE). The research was carried out in part at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration. The TMT Project gratefully acknowledges the support of the TMT collaborating institutions. They are the Association of Canadian Universities for Research in Astronomy (ACURA), the California Institute of Technology, the University of California, the National Astronomical Observatory of Japan, the National Astronomical Observatories of China and their consortium partners, and the Department of Science and Technology of India and their supported institutes. This work was supported as well by the Gordon and Betty Moore Foundation, the Canada Foundation for Innovation, the Ontario Ministry of Research and Innovation, the National Research Council of Canada, the Natural Sciences and Engineering Research Council of Canada, the British Columbia Knowledge Development Fund, the Association of Universities for Research in Astronomy (AURA), the U.S. National Science Foundation and the National Institutes of Natural Sciences of Japan.
Group:Thirty Meter Telescope
Funders:
Funding AgencyGrant Number
NASA/JPL/CaltechUNSPECIFIED
Association of Canadian Universities for Research in Astronomy (ACURA)UNSPECIFIED
CaltechUNSPECIFIED
University of CaliforniaUNSPECIFIED
National Astronomical Observatory of JapanUNSPECIFIED
National Astronomical Observatories of ChinaUNSPECIFIED
Department of Science and Technology (India)UNSPECIFIED
Gordon and Betty Moore FoundationUNSPECIFIED
Canada Foundation for InnovationUNSPECIFIED
Ontario Ministry of Research and InnovationUNSPECIFIED
National Research Council of CanadaUNSPECIFIED
Natural Sciences and Engineering Research Council of Canada (NSERC)UNSPECIFIED
British Columbia Knowledge Development FundUNSPECIFIED
Association of Universities for Research in Astronomy (AURA)UNSPECIFIED
NSFUNSPECIFIED
National Institutes of Natural Sciences of JapanUNSPECIFIED
Subject Keywords:Wavefront Sensing and Control, Segmented Mirrors, Optical Modeling, MACOS, Normalized Point Source Sensitivity, Thirty Meter Telescope, Alignment and Phasing System, Shack-Hartmann Wavefront Sensing
Record Number:CaltechAUTHORS:20180718-072938786
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20180718-072938786
Official Citation:Carl Nissly, Byoung-Joon Seo, Mitchell Troy, Gary Chanan, Scott Roberts, John Rogers, "Wavefront sensing and control performance modeling of the Thirty Meter telescope for systematic trade analyses", Proc. SPIE 9150, Modeling, Systems Engineering, and Project Management for Astronomy VI, 91500S (4 August 2014); doi: 10.1117/12.2057157; https://doi.org/10.1117/12.2057157
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:87947
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:18 Jul 2018 14:59
Last Modified:18 Jul 2018 14:59

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