ANDES, the high-resolution spectrograph for the ELT: RIZ & UBV spectrographs' preliminary design, analysis, and integration of the vacuum vessel and thermal enclosure

Santos Diaz, P.; Kern, J.; Genolet, L.; Chazelas, B.; Hughes, I.; Lanotte, A. A.; Weber, M.; Füßlein, C.; Lovis, C.; Dionies, F.; Vega-Moreno, A.; Peñate Castro, J.; Calvo Ortega, Rocio; Varas Gonzalez, Roberto; Simoes, Roberto; Tenegi, F.; Ivanisenko, Y.; Brynnel, J.; Weingrill, J.; Sigwarth, M.; Sordet, M.; Bellido, O.; Järvinen, A.; Aliverti, M.; Cabona, L.; Coretti, I.; Di Marcantonio, P.; Marconi, A.; Oliva, E.; Pariani, G.; Redaelli, E. M. A.; Riva, M.; Zanutta, A.
Bibliographical reference

Ground-based and Airborne Instrumentation for Astronomy X

Advertised on:
7
2024
Number of authors
33
IAC number of authors
3
Citations
0
Refereed citations
0
Description
The RIZ & UBV visible spectrographs of the ANDES instrument, which are foreseen to be installed at the Extremely Large Telescope, require to be under a very stable high vacuum and at an extremely stable temperature of 1mK to reach the radial velocity goal of 10cm/s RMS over a 10-year period. The baseline design, integration and first analyses of the 5.5t aluminum vacuum tank, vacuum system, and the thermal enclosure of the two-room temperature spectrographs are presented in this paper. A very analogous configuration is proposed for both instruments in view of their similarities. In addition, this article addresses the finite rigidity of the Nasmyth platform and its consequences on the instrument design together with a potential collaborative multi-CAD Product Design Management platform description.