The SIDE dual VIS-NIR fiber fed spectrograph for the 10.4 m Gran Telescopio Canarias

TL;DR

The paper introduces the SIDE dual VIS-NIR fiber-fed spectrograph designed for the 10.4 m Gran Telescopio Canarias, enabling efficient multi-object and 3D spectroscopy in visible and near-infrared bands.

Contribution

It proposes a second-generation, multi-object fiber-fed spectrograph with dual VIS-NIR capabilities, optimized for large-scale astronomical observations.

Findings

Design includes ~10 identical spectrographs with specialized cameras.

Simultaneous VIS and NIR observations in low to intermediate resolution.

High efficiency in multi-object and 3D spectroscopy for GTC.

Abstract

SIDE (Super Ifu Deployable Experiment) is proposed as second-generation, common-user instrument for the GTC. It will be a low and intermediate resolution fiber fed spectrograph, highly efficient in multi-object and 3D spectroscopy. The low resolution part (R = 1500, 4000) is called Dual VIS-NIR because it will observe in the VIS and NIR bands (0.4 ~V 1.7 microns) simultaneously. Because of the large number of fibers, a set of ~10 identical spectrographs is needed, each with a mirror collimator, a dichroic and two refractive cameras. The cameras are optimized for 0.4 - 0.95 microns (VIS) and 0.95 - 1.7 microns (NIR) respectively.