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2018•Adaptive Optics Systems VIRequires access

The MAORY laser guide star wavefront sensor: design status

Philippe Feautrier, Eric Stadler, Patrick Rabou, Jean-Jacques Correia, Sylvain Rochat, L. Jocou, L. Glück, Emiliano Diolaiti, Carmelo Arcidiacono, Fausto Cortecchia, P. Ciliegi, Sylvain Oberti, Laura Schreiber, Y. Magnard, Thibaut Moulin, Alain Delboulbé, S. Douté, G. Chauvin, E. Moraux, Christophe Verinauld, M. Bellazzini, Roberto Ragazzoni, Simone Esposito, Lorenzo Busoni

Open publisher page 9 citations

Abstract

MAORY will be the multi-adaptive optics module feeding the high resolution camera and spectrograph MICADO at the Extremely Large Telescope (ELT) first light. In order to ensure high and homogeneous image quality over the MICADO field of view and high sky coverage, the baseline is to operate wavefront sensing using six Sodium Laser Guide Stars. The Laser Guide Star Wavefront Sensor (LGS WFS) is the MAORY sub-system devoted to real-time measurement of the high order wavefront distortions. In this paper we describe the MAORY LGS WFS current design, including opto-mechanics, trade-offs and possible future improvements.

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What this paper is about

MAORY will be the multi-adaptive optics module feeding the high resolution camera and spectrograph MICADO at the Extremely Large Telescope (ELT) first light. In order to ensure high and homogeneous image quality over the MICADO field of view and high sky coverage, the baseline is to operate wavefront sensing using six Sodium Laser Guide Stars. The Laser Guide Star Wavefront Sensor (LGS WFS) is the MAORY sub-system devoted to real-time measurement of the high order wavefront distortions. In this paper we describe the MAORY LGS WFS current design, including opto-mechanics, trade-offs and possible future improvements.

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Available abstract

MAORY will be the multi-adaptive optics module feeding the high resolution camera and spectrograph MICADO at the Extremely Large Telescope (ELT) first light. In order to ensure high and homogeneous image quality over the MICADO field of view and high sky coverage, the baseline is to operate wavefront sensing using six Sodium Laser Guide Stars. The Laser Guide Star Wavefront Sensor (LGS WFS) is the MAORY sub-system devoted to real-time measurement of the high order wavefront distortions. In this paper we describe the MAORY LGS WFS current design, including opto-mechanics, trade-offs and possible future improvements.

Key concepts: Wavefront sensor, Laser guide star, Adaptive optics, Wavefront, Guide star, Spectrograph, Telescope, Optics

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