ESPRESSO optical bench: from mind to reality
| Autor: | Marco Riva, Rafael Rebolo, I. Hughes, Denis Mégevand, E. Rodilla, J. Gómez, F. Tenegi, S. Santana, R. Luis-Simoes |
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| Rok vydání: | 2016 |
| Předmět: |
010504 meteorology & atmospheric sciences
Computer science business.industry Gas tungsten arc welding Process (computing) Stiffness Mechanical engineering Welding 01 natural sciences Finite element method law.invention Telescope Espresso Optics Welding process law 0103 physical sciences medicine medicine.symptom business 010303 astronomy & astrophysics Spectrograph 0105 earth and related environmental sciences |
| Zdroj: | SPIE Proceedings. |
| ISSN: | 0277-786X |
| Popis: | ESPRESSO [1] is a high-resolution spectrograph under development for the VLT telescope. In general, the Optical Bench (OB) structure can be considered as a 3D one, conformed by welding thin plates of Structural Steel (St-52) with a nickelplated surface treatment, combined for getting maximum stiffness and minimum weight, that will be finally re-machined to get stringent geometrical and dimensional tolerances at I/Fs positions. TIG conventional welding procedure has been selected to minimize the cost and facilitate the own welding process. This solution follows the inheritance from HARPS [2] due to its success to achieve the required performance for the bench. This paper contains an overview of the whole process of designing and manufacturing the Optical Bench of ESPRESSO, from the very first beginning with the specifications to the current status of the bench with its integration on the Spectrograph (including the Finite Element Models and the delivery of the final structure by the supplier) and lessons learned. |
| Databáze: | OpenAIRE |
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