A look into alternative mechanical designs for the MORFEO-MICADO thermal duct mechanical: developments and alternatives

Domenico D'Auria; Vincenzo Cianniello; Vincenzo De Caprio; Christian Eredia; Enrico Cascone; Marco Riva; Paolo Ciliegi

doi:10.1117/12.3018923

18 July 2024 A look into alternative mechanical designs for the MORFEO-MICADO thermal duct mechanical: developments and alternatives

Domenico D'Auria, Vincenzo Cianniello, Vincenzo De Caprio, Christian Eredia, Enrico Cascone, Marco Riva, Paolo Ciliegi

Author Affiliations +

Proceedings Volume 13096, Ground-based and Airborne Instrumentation for Astronomy X; 130965B (2024) https://doi.org/10.1117/12.3018923
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

MORFEO is a post-focal adaptive optics module aiming to improve the resolution of the images for the ELT through a couple of deformable mirrors, hosted on one of the Nasmyth Platforms of the Telescope. It supports the MICADO nearinfrared camera by offering two adaptive optics modes: Multi-Conjugate Adaptive Optics (MCAO) and Single-Conjugate Adaptive Optics (SCAO). Between these two systems a thermal tube has been designed in order to preserve in a controlled environment the light beam between MORFEO and MICADO, avoiding interference of light, dust, turbulence and any other source of pollution coming from outside. The complexity in the structures of MORFEO and MICADO and the seismic characteristic of the ELT site in Cerro Armazones (Chile) has imposed, since the first design phase, an intermediate structure between these two systems but mechanically decoupled from them. In this sense a truss structure tower has been presented during the Preliminary Design Review of MORFEO as successful design structural support for the tube, but further development in the design of the Nasmyth Platform (NP) has required some improvements in the design, shown in this proceeding. The analyses have been carried out through an ANSYS simulation, deepening the design of the feet interfaces up to their 3D models, while, in order to preserve a light model, the tower is still simulated by one- and twodimensional objects, as presented in the Preliminary Design Review. To assess the design of the “MORFEO-MICADO Thermal Duct” and to verify the compliance with the System requirements, a series of modal and static analyses simulating the earthquakes has been carried out.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

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Domenico D'Auria, Vincenzo Cianniello, Vincenzo De Caprio, Christian Eredia, Enrico Cascone, Marco Riva, and Paolo Ciliegi "A look into alternative mechanical designs for the MORFEO-MICADO thermal duct mechanical: developments and alternatives", Proc. SPIE 13096, Ground-based and Airborne Instrumentation for Astronomy X, 130965B (18 July 2024); https://doi.org/10.1117/12.3018923

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