Adaptive optics: interaction matrix measurements and real time control algorithms for the COME-ON project

Corinne Boyer; Vincent Michau; Gerard Rousset

doi:10.1117/12.20395

1 August 1990 Adaptive optics: interaction matrix measurements and real time control algorithms for the COME-ON project

Corinne Boyer, Vincent Michau, Gerard Rousset

Proceedings Volume 1271, Adaptive Optics and Optical Structures; (1990) https://doi.org/10.1117/12.20395
Event: The International Congress on Optical Science and Engineering, 1990, The Hague, Netherlands

Abstract

The objectives of the COME-ON project are to experiment a 19 actuator adaptive optics system planned to be used on a 4 m diameter telescope. This project has been worked out by 4 teams from: - Laserdot (Aerospatiale) - Office National d'Etudes et de Recherches Aerospatiales - Observatoire de Paris - European Southern Observatory (E.S.O.) The adaptive system is made of the following major components: - a 19 actuator adaptive mirror - a Shack-Hartmann wavefront sensor and its real time slope processor - a 68020 Motorola based real time control processor In the present paper we relate the works done for: - The interaction matrix identification. This matrix links the slope measurements and the controls of the adaptive mirror. A process to determine this matrix by a direct measurement method is described ; considerations on the matrix inversion and control mode cancellation are examined. - The control algorithm performing the real time computations needed to control the 19 actuators is described. Some results of the laboratory and observatory tests are given. Same paper has been presented during the SPIE's 90 Symposium on Astronomical Telescopes and Instrumentation for the 21st Century in February 1990.

Citation Download Citation

Corinne Boyer, Vincent Michau, and Gerard Rousset "Adaptive optics: interaction matrix measurements and real time control algorithms for the COME-ON project", Proc. SPIE 1271, Adaptive Optics and Optical Structures, (1 August 1990); https://doi.org/10.1117/12.20395

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