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Multiple guide star tomography demonstration at Palomar observatory

Velur, V. and Flicker, R. C. and Platt, B. C. and Britton, M. C. and Dekany, R. G. and Troy, M. and Roberts, J. E. and Shelton, J. C. and Hickey, J. (2006) Multiple guide star tomography demonstration at Palomar observatory. In: Advances in Adaptive Optics II. Proceedings of SPIE. No.6272. Society of Photo-Optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 62725C. ISBN 9780819463371. http://resolver.caltech.edu/CaltechAUTHORS:20190717-103432645

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Abstract

We have built and field tested a multiple guide star tomograph with four Shack-Hartmann wavefront sensors. We predict the wavefront on the fourth sensor channel estimated using wavefront information from the other three channels using synchronously recorded data. This system helps in the design of wavefront sensors for future extremely large telescopes that will use multi conjugate adaptive optics and multi object adaptive optics. Different wavefront prediction algorithms are being tested with the data obtained. We describe the system, its current capabilities and some preliminary results.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.1117/12.671666DOIArticle
Additional Information:© 2006 Society of Photo-Optical Instrumentation Engineers (SPIE). This work was supported by the National Science Foundation (NSF) under Agreement No. AST-0096928, the Thirty Meter Telescope (TMT) project, W. M. Keck Observatory and internal Caltech Optical Observatories funds. The authors thank the JPL AO team and staff of Palomar Observatory for valuable support rendered at various stages of this project. Special thanks to Prof. Ed Kibblewhite (The University of Chicago) for useful insight during the design phase. We would also like to thank the TMT site-selection team and Dr. A. J. Pickles (COO) for ensuring that the MASS/DIMM unit was up and working during these experiments. In particular, the efforts of Reed Riddle, Warren Skidmore, Matthias Schöeck, Sebastian Els (CTIO) and Tony Travouillon to keep the unit in perfect running condition despite their busy TMT site survey activities. The Thirty Meter Telescope (TMT) Project is a partnership of the Association of Universities for Research in Astronomy (AURA), the National Science Foundation (NSF), 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 US National Science Foundation, 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
NSFAST-0096928
Thirty Meter Telescope ProjectUNSPECIFIED
W. M. Keck ObservatoryUNSPECIFIED
Caltech Optical ObservatoriesUNSPECIFIED
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
National Research Council of CanadaUNSPECIFIED
Natural Sciences and Engineering Research Council of Canada (NSERC)UNSPECIFIED
Gemini PartnershipUNSPECIFIED
Subject Keywords:Multi-Conjugate adaptive optics, tomography, novel wavefront sensing
Series Name:Proceedings of SPIE
Issue or Number:6272
Record Number:CaltechAUTHORS:20190717-103432645
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20190717-103432645
Official Citation:V. Velur, R. C. Flicker, B. C. Platt, M. C. Britton, R. G. Dekany, M. Troy, J. E. Roberts, J. C. Shelton, and J. Hickey "Multiple guide star tomography demonstration at Palomar Observatory", Proc. SPIE 6272, Advances in Adaptive Optics II, 62725C (27 June 2006); https://doi.org/10.1117/12.671666
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:97224
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:17 Jul 2019 19:30
Last Modified:17 Jul 2019 19:30

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