IBIS 2.0: optical layout and polarimetric unit of the Interferometric BIdimensional Spectrometer 2.0

Giorgio Viavattene; Ilaria Ermolli; Roberto Cirami; Giorgio Calderone; Dario Del Moro; Paolo Romano; Matteo Aliverti; Veronica Baldini; Fabrizio Giorgi; Fernando Pedichini; Igor Coretti; Paolo Di Marcantonio; Luca Giovannelli; Salvatore Luigi Guglielmino; Mariarita Murabito; Luca Oggioni; Maurizio Oliviero; Roberto Piazzesi; Edoardo Maria Alberto Redaelli

doi:10.1117/12.2629917

29 August 2022 IBIS 2.0: optical layout and polarimetric unit of the Interferometric BIdimensional Spectrometer 2.0

Giorgio Viavattene, Ilaria Ermolli, Roberto Cirami, Giorgio Calderone, Dario Del Moro, Paolo Romano, Matteo Aliverti, Veronica Baldini, Fabrizio Giorgi, Fernando Pedichini, Igor Coretti, Paolo Di Marcantonio, Luca Giovannelli, Salvatore Luigi Guglielmino, Mariarita Murabito, Luca Oggioni, Maurizio Oliviero, Roberto Piazzesi, Edoardo Maria Alberto Redaelli

Author Affiliations +

Proceedings Volume 12184, Ground-based and Airborne Instrumentation for Astronomy IX; 121842A (2022) https://doi.org/10.1117/12.2629917
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Conference Poster

Abstract

The IBIS 2.0 Interferometric BIdimensional Spectrometer 2.0 instrument combines two tunable Fabry-P´erot interferometers, narrowband interference filters, a polarimetric unit, fast cameras, and a proper Instrument Control System to perform high-resolution solar spectropolarimetric observations at high cadence with short exposures. A previous version of the instrument, named IBIS, operated at the Dunn Solar Telescope (DST) of the National Solar Observatory (NSO) from 2003 to 2019. IBIS 2.0 is planned to enter operations over the spectral range 580-860 nm at the Teide Observatory in 2023. In this paper we describe the final optical layout adopted for IBIS 2.0 along with its polarimetric unit, which is realized with two Liquid Crystals Variable Retarders and a Wollaston prism acting as a Polarizing Beam Splitter. We also present the final design of the Instrument Control System, the expected performances of the IBIS 2.0 instrument, and the planned sequence of operations.

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Giorgio Viavattene, Ilaria Ermolli, Roberto Cirami, Giorgio Calderone, Dario Del Moro, Paolo Romano, Matteo Aliverti, Veronica Baldini, Fabrizio Giorgi, Fernando Pedichini, Igor Coretti, Paolo Di Marcantonio, Luca Giovannelli, Salvatore Luigi Guglielmino, Mariarita Murabito, Luca Oggioni, Maurizio Oliviero, Roberto Piazzesi, and Edoardo Maria Alberto Redaelli "IBIS 2.0: optical layout and polarimetric unit of the Interferometric BIdimensional Spectrometer 2.0", Proc. SPIE 12184, Ground-based and Airborne Instrumentation for Astronomy IX, 121842A (29 August 2022); https://doi.org/10.1117/12.2629917

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