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MOSAIC optical relay module: optical design, performance, and flexure analysis

Calcines, Ariadna; Dubbeldam, Marc; Morris, Timothy J.; Fitzsimons, Ewan; Schnetler, Hermine; Cohen, Mathieu; Amans, Jean-Philippe

MOSAIC optical relay module: optical design, performance, and flexure analysis Thumbnail


Authors

Ewan Fitzsimons

Hermine Schnetler

Mathieu Cohen

Jean-Philippe Amans



Contributors

Christopher J. Evans
Editor

Luc Simard
Editor

Hideki Takami
Editor

Abstract

The Optical Relay Module of the MOSAIC multiple-object spectrograph is used to relay 400-1800nm light picked off from the ELT focal plane to either a fibre-based integral field unit or a natural guide star wavefront sensor. Here we present the preliminary optical design offering a telecentric exit beam with a focal-ratio of F/17.718 and the opto-mechanical analysis of flexures with a study of the impact in the optical layout performances such as: deviation of the PSF centroid, tip-tilt of the image focal plane, variations of the wavefront error, optical quality and pupil wandering at the deformable mirror position.

Citation

Calcines, A., Dubbeldam, M., Morris, T. J., Fitzsimons, E., Schnetler, H., Cohen, M., & Amans, J. (2018). MOSAIC optical relay module: optical design, performance, and flexure analysis. In C. J. Evans, L. Simard, & H. Takami (Eds.), Proceedings Volume 10702, Ground-based and Airborne Instrumentation for Astronomy VII. https://doi.org/10.1117/12.2313481

Conference Name Ground-based and Airborne Instrumentation for Astronomy VII, SPIE Astronomical Telescopes + Instrumentation 2018
Conference Location Austin, Texas
Online Publication Date Jul 11, 2018
Publication Date 2018
Deposit Date Sep 25, 2018
Publicly Available Date Jan 17, 2023
Publisher SPIE
Volume 10702
Book Title Proceedings Volume 10702, Ground-based and Airborne Instrumentation for Astronomy VII
ISBN 9781510619579
DOI https://doi.org/10.1117/12.2313481
Public URL https://durham-repository.worktribe.com/output/1145532

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Copyright Statement
Copyright (2018) Society of Photo Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.





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