SOXS NIR: Optomechanical integration and alignment, optical performance verification before full instrument assembly
: Genoni, M.; Aliverti, M.; Pariani, G.; Oggioni, L.; Vitali, F.; D'Alessio, F.; D'Avanzo, P.; Campana, S.; Munari, M.; Sanchez, R. Zanmar; Scaudo, A.; Landoni, M.; Young, D.; Scuderik, S.; Schipani, P.; Riva, M.; Claudi, R.; Radhakrishnan, K.; Battaini, F.; Rubin, A.; Baruffolo, A.; Capasso, G.; Cosentino, R.; Hershko, O.; Kuncarayakti, H.; Pignata, G.; Ben-Ami, S.; Brucalassi, A.; Achren, J.; Araiza-Duran, J. A.; Arcavi, I.; Asquini, L.; Bruch, R.; Cappellaro, E.; Colapietro, M.; Della Valle, M.; De Pascale, M.; Di Benedetto, R.; D'Orsi, S.; Gal-Yam, A.; Diaz, M. Hernandez; Kotilainen, J.; Li Causi, G.; Marty, L.; Mattila, S.; Rappaport, M.; Ricci, D.; Salasnich, B.; Smartt, S.; Stritzinger, M.; Ventura, H.
: Bryant, Julia J.; Motohara, Kentaro; Vernet, Joël R. D.
: SPIE Astronomical Telescopes + Instrumentation
Publisher: SPIE-INT SOC OPTICAL ENGINEERING
: BELLINGHAM
: 2024
: Proceedings of SPIE : the International Society for Optical Engineering
: Ground-based and Airborne Instrumentation for Astronomy X
: PROC SPIE
: 130962T
: Proceedings of SPIE
: 13096
: 15
: 978-1-5106-7515-5
: 978-1-5106-7516-2
: 0277-786X
: 1996-756X
DOI: https://doi.org/10.1117/12.3019253(external)
: https://doi.org/10.1117/12.3019253(external)
: https://arxiv.org/abs/2407.17244(external)
This paper presents the opto-mechanical integration and alignment, functional and optical performance verification of the NIR arm of Son Of X-Shooter (SOXS) instrument. SOXS will be a single object spectroscopic facility for the ESO-NTT 3.6-m telescope, made by two arms high efficiency spectrographs, able to cover the spectral range 350-2050 nm with a mean resolving power R similar to 4500. In particular the NIR arm is a cryogenic echelle cross-dispersed spectrograph spanning the 780-2050 nm range. We describe the integration and alignment method performed to assemble the different optomechanical elements and their installation on the NIR vacuum vessel, which mostly relies on mechanical characterization. The tests done to assess the image quality, linear dispersion and orders trace in laboratory conditions are summarized. The full optical performance verification, namely echellogram format, image quality and resulting spectral resolving power in the whole NIR arm (optical path and science detector) is detailed. Such verification is one of the most relevant prerequisites for the subsequent full instrument assembly and provisional acceptance in Europe milestone, foreseen in 2024.
