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Optical design for the narrow field infrared adaptive optics system (NFIRAOS) petite on the thirty meter telescope

Bauman, Brian J. and Gavel, Donald T. and Dekany, Richard G. and Ellerbroek, Brent L. (2005) Optical design for the narrow field infrared adaptive optics system (NFIRAOS) petite on the thirty meter telescope. In: Astronomical Adaptive Optics Systems and Applications II. Proceedings of SPIE. No.5903. Society of Photo-Optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 590303. ISBN 9780819459084. http://resolver.caltech.edu/CaltechAUTHORS:20190517-153308760

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Abstract

We describe an exploratory optical design for the Narrow Field InfraRed Adaptive Optics (AO) System (NFIRAOS) Petite, a proposed adaptive optics system for the Thirty Meter Telescope Project. NFIRAOS will feed infrared spectrograph and wide-field imaging instruments with a diffraction limited beam. The adaptive optics system will require multi-guidestar tomographic wavefront sensing (WFS) and multi-conjugate AO correction. The NFIRAOS Petite design specifications include two small 60 mm diameter deformable mirrors (DM's) used in a woofer/tweeter or multiconjugate arrangement. At least one DM would be a micro-electromechanical system (MEMS) DM. The AO system would correct a 10 to 30 arcsec diameter science field as well as laser guide stars (LGS's) located within a 60 arcsec diameter field and low-order or tip/tilt natural guide stars (NGS's) within a 60 arcsec diameter field. The WFS's are located downstream of the DM's so that they can be operated in true closed-loop, which is not necessarily a given in extremely large telescope adaptive optics design. The WFS's include adjustable corrector elements which correct the static aberrations of the AO relay due to field position and LGS distance height.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.1117/12.618220DOIArticle
Additional Information:© 2005 Society of Photo-Optical Instrumentation Engineers (SPIE). This paper was prepared as part of the work of the Thirty-Meter Telescope (TMT) Project. TMT is a partnership of the Association of Universities for Research in Astronomy (AURA), the Association of Canadian Universities for Research in Astronomy (ACURA), the California Institute of Technology, and the University of California. The partners gratefully acknowledge the support of the Gordon and Betty Moore Foundation, the U.S. National Science Foundation (NSF), the National Research Council of Canada, the Natural Sciences and Engineering Research Council of Canada, and the Gemini Partnership.
Group:Thirty Meter Telescope
Funders:
Funding AgencyGrant Number
Association of Universities for Research in Astronomy (AURA)UNSPECIFIED
Association of Canadian Universities for Research in Astronomy (ACURA)UNSPECIFIED
CaltechUNSPECIFIED
University of CaliforniaUNSPECIFIED
Gordon and Betty Moore FoundationUNSPECIFIED
NSFUNSPECIFIED
National Research Council of CanadaUNSPECIFIED
Natural Sciences and Engineering Research Council of Canada (NSERC)UNSPECIFIED
Gemini PartnershipUNSPECIFIED
Subject Keywords:adaptive optics, NFIRAOS, Thirty Meter Telescope, deformable mirror, wavefront sensor, microelectromechanical system (MEMS), aberration correction, infrared, laser guide star, sodium beacon
Record Number:CaltechAUTHORS:20190517-153308760
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20190517-153308760
Official Citation:Brian J. Bauman, Donald T. Gavel, Richard G. Dekany, and Brent L. Ellerbroek "Optical design for the narrow field infrared adaptive optics system (NFIRAOS) petite on the thirty meter telescope", Proc. SPIE 5903, Astronomical Adaptive Optics Systems and Applications II, 590303 (25 August 2005); doi: 10.1117/12.618220; https://doi.org/10.1117/12.618220
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:95578
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:20 May 2019 16:30
Last Modified:20 May 2019 16:30

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