MedRes: a new MEDium RESolution integral field spectrograph for SPHERE

Raffaele Gratton; Christoph Keller; Emiliano Diolaiti; Andrea Baruffolo; Mickael Bonnefoy; Valentina D'Orazi; Maud Langlois; Magali Loupias; Mamadou N'Diaye; Eric Pantin; Eric Stadler; François Wildi; Jean-Luc Beuzit; Anthony Boccaletti; Gael Chauvin; Silvano Desidera; David Mouillet; Andrea Bianco; Enrico Cascone; Fausto Cortecchia; Vincenzo De Caprio; Adriano De Rosa; Celia Desgrange; Michele Frangiamore; Rico Landman; Matteo Lombini; Giuseppe Malaguti; Dino Mesa; Julien Milli; Gianluca Morgante; Thibault Pichon; Filomena Schiavone; Laura Schreiber; Luca Terenzi; Alessio Zanutta

doi:10.1117/12.2630382

29 August 2022 MedRes: a new MEDium RESolution integral field spectrograph for SPHERE

Raffaele Gratton, Christoph Keller, Emiliano Diolaiti, Andrea Baruffolo, Mickael Bonnefoy, Valentina D'Orazi, Maud Langlois, Magali Loupias, Mamadou N'Diaye, Eric Pantin, Eric Stadler, François Wildi, Jean-Luc Beuzit, Anthony Boccaletti, Gael Chauvin, Silvano Desidera, David Mouillet, Andrea Bianco, Enrico Cascone, Fausto Cortecchia, Vincenzo De Caprio, Adriano De Rosa, Celia Desgrange, Michele Frangiamore, Rico Landman, Matteo Lombini, Giuseppe Malaguti, Dino Mesa, Julien Milli, Gianluca Morgante, Thibault Pichon, Filomena Schiavone, Laura Schreiber, Luca Terenzi, Alessio Zanutta

Author Affiliations +

Proceedings Volume 12184, Ground-based and Airborne Instrumentation for Astronomy IX; 121844F (2022) https://doi.org/10.1117/12.2630382
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Conference Poster

Abstract

MedRes is a proposed MEDium RESolution integral field spectrograph for upgrading SPHERE, the high contrast instrument for the ESO VLT telescope. MedRes is actually thought of as a potential Visitor Instrument with the scope to provide high contrast diffraction limited medium-high resolution spectra (R ≥ 1000) over a reasonably large field of view (a square with a side of at least 0.4) and across the spectral region 1.2-1.65 microns. Two main science objectives are driving the proposition for such an instrument on SPHERE. First of all, MedRes shall improve the detection of previously unknown giant planets (contrast 10−5 , goal 10−6 ), in particular accreting planets, at small separation from the star (< 0.2”, goal, 0.1”). And second, MedRes will boost the characterisation of known (faint) planets at a spectral resolution substantially higher than currently possible with SPHERE IFS (R ~ 35 − 50) and for contrasts much better than achievable with IRDIS Long Slit Spectroscopy (LSS) at small separations. The design will be optimised for SPHERE, fully exploiting the capabilities offered by a second stage Adaptive Optics (SAXO+) and complementing the niches of IRDIS, IFS and HiRise in the near IR channel. A preliminary optomechanical design and simulations of performance will be presented.

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Raffaele Gratton, Christoph Keller, Emiliano Diolaiti, Andrea Baruffolo, Mickael Bonnefoy, Valentina D'Orazi, Maud Langlois, Magali Loupias, Mamadou N'Diaye, Eric Pantin, Eric Stadler, François Wildi, Jean-Luc Beuzit, Anthony Boccaletti, Gael Chauvin, Silvano Desidera, David Mouillet, Andrea Bianco, Enrico Cascone, Fausto Cortecchia, Vincenzo De Caprio, Adriano De Rosa, Celia Desgrange, Michele Frangiamore, Rico Landman, Matteo Lombini, Giuseppe Malaguti, Dino Mesa, Julien Milli, Gianluca Morgante, Thibault Pichon, Filomena Schiavone, Laura Schreiber, Luca Terenzi, and Alessio Zanutta "MedRes: a new MEDium RESolution integral field spectrograph for SPHERE", Proc. SPIE 12184, Ground-based and Airborne Instrumentation for Astronomy IX, 121844F (29 August 2022); https://doi.org/10.1117/12.2630382

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