MORFEO optical design and performances: status at preliminary design review

G. Pariani; D. Magrin; M. Munari; A. Rakich; B. Delabre; J. Kosmalski; P. Rabou; A. Bianco; M. Bergomi; E. Redaelli; M. Aliverti; L. Oggioni; J. Farinato; G. Rodeghiero; D. Greggio; V. Cianniello; V. De Caprio; L. Busoni; I. Foppiani; M. Riva; U. Di Giammatteo; P. Ciliegi

doi:10.1117/12.2629415

29 August 2022 MORFEO optical design and performances: status at preliminary design review

G. Pariani, D. Magrin, M. Munari, A. Rakich, B. Delabre, J. Kosmalski, P. Rabou, A. Bianco, M. Bergomi, E. Redaelli, M. Aliverti, L. Oggioni, J. Farinato, G. Rodeghiero, D. Greggio, V. Cianniello, V. De Caprio, L. Busoni, I. Foppiani, M. Riva, U. Di Giammatteo, P. Ciliegi

Author Affiliations +

Proceedings Volume 12185, Adaptive Optics Systems VIII; 121855M (2022) https://doi.org/10.1117/12.2629415
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Conference Poster

Abstract

MORFEO, formerly known with the acronym MAORY, is the Multi-Conjugated Adaptive Optics (MCAO) module for the European Extremely Large Telescope (ELT). MORFEO is designed to feed the Near Infrared (NIR) camera MICADO with both MCAO and Single-Conjugated AO (SCAO) operation modes. The optical configuration provides a one to one imaging of the telescope focal surface on two ports (one feeding MICADO and the other dedicated to a future instrument) and it is equipped with two post-focal deformable mirrors together with the Laser Guide Star (LGS) and Natural Guide Star (NGS) channels for wavefront sensing and tomographic reconstruction.

In this paper, we present the status of the optical configuration at the completion of the Preliminary Design Review (PDR). We will focus our attention on the tolerance analysis of the elements, consisting in both manufacturing and alignment, to provide the expected performances of the instrument after initial integration. We will also present the outcomes of the stability analysis of the instrument, consisting in rigid-body motions and thermoelastic deformations of the structure and optomechanics, used to define the procedures and benchmark to maintain the instrument performances during operation. Details on the integrated modelling, specifically developed for this purpose, will be provided.

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G. Pariani, D. Magrin, M. Munari, A. Rakich, B. Delabre, J. Kosmalski, P. Rabou, A. Bianco, M. Bergomi, E. Redaelli, M. Aliverti, L. Oggioni, J. Farinato, G. Rodeghiero, D. Greggio, V. Cianniello, V. De Caprio, L. Busoni, I. Foppiani, M. Riva, U. Di Giammatteo, and P. Ciliegi "MORFEO optical design and performances: status at preliminary design review", Proc. SPIE 12185, Adaptive Optics Systems VIII, 121855M (29 August 2022); https://doi.org/10.1117/12.2629415

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