NAOS real-time computer for optimized closed-loop and online performance estimation

Didier Rabaud; Frederic Chazallet; Gerard Rousset; Catherine Amra; Benoit Argast; Joseph Montri; Guillaume Dumont; Beatrice Sorrente; Pierre-Yves Madec; Eric Gendron; Robin Arsenault; David Mouillet; Norbert N. Hubin; Julien Charton

doi:10.1117/12.390359

7 July 2000 NAOS real-time computer for optimized closed-loop and online performance estimation

Didier Rabaud, Frederic Chazallet, Gerard Rousset, Catherine Amra, Benoit Argast, Joseph Montri, Guillaume Dumont, Beatrice Sorrente, Pierre-Yves Madec, Eric Gendron, Robin Arsenault, David Mouillet, Norbert N. Hubin, Julien Charton

Author Affiliations +

Proceedings Volume 4007, Adaptive Optical Systems Technology; (2000) https://doi.org/10.1117/12.390359
Event: Astronomical Telescopes and Instrumentation, 2000, Munich, Germany

Abstract

The Real Time Computer RTC is a key component of the Nasmyth Adaptive Optics System, controlling the 185 actuators of the deformable mirror from a 144 Shack-Hartmann subapertures wavefront sensor at a maximum frequency of 500 Hz. It also provides additional capabilities such as real time optimization of the control loop which is the warranty for NAOS to achieve a very good Strehl Ratio in a broad magnitude range (Mv equals 8 up to 18), on-line turbulence and performance estimations and finally capability to store and process the data necessary to the off-line PSF reconstruction algorithm. This RTC is also designed to be easily upgraded as for Laser Guide Star. Moreover all softwares can be easily adapted to control a curvature sensor as well as the hardware which can be used with the two types of wave front sensors.

Citation Download Citation

Didier Rabaud, Frederic Chazallet, Gerard Rousset, Catherine Amra, Benoit Argast, Joseph Montri, Guillaume Dumont, Beatrice Sorrente, Pierre-Yves Madec, Eric Gendron, Robin Arsenault, David Mouillet, Norbert N. Hubin, and Julien Charton "NAOS real-time computer for optimized closed-loop and online performance estimation", Proc. SPIE 4007, Adaptive Optical Systems Technology, (7 July 2000); https://doi.org/10.1117/12.390359

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available