The RISTRETTO project is aiming to build an instrument that will detect the reflected light from close-by exoplanet. It is a two stage instrument: An extreme AO system in the visible, followed by a seven spaxel single mode High resolution Spectrograph. In this paper we present the design of this spectrograph: a classical echelle spectrograph fed with single mode fibers. Standard single mode fibers have been chosen and are forming a long tilted slit in order to have the right order spacing on the detector. The instrument will be under vacuum and thermally controlled in order to make it stable.
@article{arxiv.2208.14875,
title = {RISTRETTO: Seven Spaxels Single Mode Spectrograph Design},
author = {Bruno Chazelas and Christophe Lovis and Nicolas Blind and Ludovic Genolet and Ian Hughes and Michael Sordet and Robin Schnell and Anthony Carvalho and Maddalena Bugatti},
journal= {arXiv preprint arXiv:2208.14875},
year = {2022}
}
Comments
7 pages, 7 figures, SPIE Astronomical Telescope and Instrumentation 2022, conference : Ground-based and Airborne Instrumentation for Astronomy IX (12184)