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Proceedings Paper

New beam steering mirror concept and metrology system for multi-IFU
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Paper Abstract

A particular flavor of multi-object spectrographs uses pick-off and steering mirrors. These mirrors perform target selection by relaying the optical beams from variable positions in the focal plane to fixed optics in the instrument. Examples of instrument conceptual designs based on this system are presented and illustrated. Particular emphasis is given to the beam steering mirror (BSM) environment which requires the following mechanical motions: translation, rotations and possibly active deformation of the optical surface. A BSM design featuring translation, tip-tilt and a toroidal deformable surface is presented. First results from a prototype development are also presented. A metrology system including wavefront sensing allows to measure and control the position of the optical beam. This system, required for system tests, integration, calibration and operation, is presented. This work is part of the Laboratoire d'Astrophysique de Marseille (LAM) contribution to the beam manipulation work package of the OPTICON smart focal plane.

Paper Details

Date Published: 6 July 2006
PDF: 11 pages
Proc. SPIE 6273, Optomechanical Technologies for Astronomy, 62731X (6 July 2006); doi: 10.1117/12.671620
Show Author Affiliations
Fabrice Madec, Lab. d'Astrophysique de Marseille (France)
Eric Prieto, Lab. d'Astrophysique de Marseille (France)
Pierre-Eric Blanc, Lab. d'Astrophysique de Marseille (France)
Emmanuel Hugot, Lab. d'Astrophysique de Marseille (France)
Sébastien Vivès, Lab. d'Astrophysique de Marseille (France)
Marc Ferrari, Lab. d'Astrophysique de Marseille (France)
Jean-Gabriel Cuby, Lab. d'Astrophysique de Marseille (France)

Published in SPIE Proceedings Vol. 6273:
Optomechanical Technologies for Astronomy
Eli Atad-Ettedgui; Joseph Antebi; Dietrich Lemke, Editor(s)

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