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Final performance and lesson-learned of SAXO, the VLT-SPHERE extreme AO: From early design to on-sky results

Fusco, T. and Mawet, D. (2014) Final performance and lesson-learned of SAXO, the VLT-SPHERE extreme AO: From early design to on-sky results. In: Adaptive Optics Systems IV. Proceedings of SPIE. No.9148. Society of Photo-Optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 91481U. ISBN 9780819496164. http://resolver.caltech.edu/CaltechAUTHORS:20150520-070332046

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Abstract

The extreme AO system, SAXO (SPHERE AO for eXoplanet Observation), is the heart of the SPHERE system, feeding the scientific instruments with flat wave front corrected from all the atmospheric turbulence and internal defects. We will present the final performance of SAXO obtained during the instrument AIT in Europe as well as the very first on-sky results. The main requirements and system characteristics will be recalled and the full AO loop performance will be quantified and compared to original specifications. It will be demonstrated that SAXO meets or even exceeds (especially its limit magnitude and its jitter residuals) its challenging requirements (more than 90% of SR in H band and a 3 mas residual jitter). Finally, after 10 years of AO developments, from early design to final on-sky implementations, some critical system aspects as well as some important lesson-learned will be presented in the perspective of the future generation of complex AO systems for VLTs and ELTs.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1117/12.2055423DOIArticle
http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=1896543PublisherArticle
ORCID:
AuthorORCID
Mawet, D.0000-0002-8895-4735
Additional Information:© 2014 Society of Photo-Optical Instrumentation Engineers (SPIE). Date Published: 5 September 2014.
Subject Keywords:Instrumentation: Adaptive Optics, Coronagraph, High Contrast Imaging - Methods: Wavefront Sensing, Control, Phase Diversity, Shack-Hartmann
Record Number:CaltechAUTHORS:20150520-070332046
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20150520-070332046
Official Citation:T. Fusco ; J.-F. Sauvage ; C. Petit ; A. Costille ; K. Dohlen, et al. " Final performance and lesson-learned of SAXO, the VLT-SPHERE extreme AO: from early design to on-sky results ", Proc. SPIE 9148, Adaptive Optics Systems IV, 91481U (August 7, 2014); doi:10.1117/12.2055423; http://dx.doi.org/10.1117/12.2055423
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:57679
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:20 May 2015 18:40
Last Modified:20 May 2015 18:40

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