RISTRETTO: seven spaxel single mode spectrograph design

Bruno Chazelas; Christophe Lovis; Nicolas Blind; Ludovic Genolet; Ian Hughes; Michael Sordet; Robin Schnell; Anthony Carvalho; Maddalena Bugatti

doi:10.1117/12.2629907

29 August 2022 RISTRETTO: seven spaxel single mode spectrograph design

Bruno Chazelas, Christophe Lovis, Nicolas Blind, Ludovic Genolet, Ian Hughes, Michael Sordet, Robin Schnell, Anthony Carvalho, Maddalena Bugatti

Author Affiliations +

Proceedings Volume 12184, Ground-based and Airborne Instrumentation for Astronomy IX; 121844T (2022) https://doi.org/10.1117/12.2629907
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Conference Poster

Abstract

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.

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Bruno Chazelas, Christophe Lovis, Nicolas Blind, Ludovic Genolet, Ian Hughes, Michael Sordet, Robin Schnell, Anthony Carvalho, and Maddalena Bugatti "RISTRETTO: seven spaxel single mode spectrograph design", Proc. SPIE 12184, Ground-based and Airborne Instrumentation for Astronomy IX, 121844T (29 August 2022); https://doi.org/10.1117/12.2629907

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