The status of the NIR arm of the SOXS Instrument toward the PAE

TL;DR

This paper reports on the current status and testing results of the NIR arm of the SOXS spectrograph, a key instrument for the ESO NTT, focusing on its cryogenic, optical, mechanical, and detector subsystems.

Contribution

It provides detailed status updates and test results for the assembled NIR spectrograph component of SOXS, advancing its readiness for the PAE phase.

Findings

Successful assembly and testing of the NIR spectrograph subsystems.

Validation of cryogenic and vacuum performance.

Opto-mechanical and detector subsystem readiness.

Abstract

The Son Of X-Shooter (SOXS) is a single object spectrograph, built by an international consortium for the 3.58-m ESO New Technology Telescope at the La Silla Observatory [1]. It offers a simultaneous spectral coverage over 350-2000 nm, with two separate spectrographs. In this paper we present the status of the Near InfraRed (NIR) cryogenic echelle cross-dispersed spectrograph [1], in the range 0.80-2.00 {\mu}m with 15 orders, equipped with an 2k x 2k Hawaii H2RG IR array from Teledyne, working at 40K, that is currently assembled and tested on the SOXS instrument, in the premises of INAF in Padova. We describe the different tests and results of the cryo, vacuum, opto-mechanics and detector subsystems that finally will be part of the PAE by ESO.