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GPI 2.0: Upgrades to the IFS including new spectral modes

Limbach, Mary Anne and Chilcote, Jeffrey and Konopacky, Quinn and De Rosa, Robert and Hamper, Randall and Macintosh, Bruce and Marois, Christian and Perrin, Marshall and Savransky, Dmitry and Véran, Jean-Pierre and Wang, Jason and Aleman, Arlene (2020) GPI 2.0: Upgrades to the IFS including new spectral modes. In: Ground-based and Airborne Instrumentation for Astronomy VIII. Proceedings of SPIE. No.11447. Society of Photo-Optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 114475D. ISBN 9781510636811.

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The Gemini Planet Imager (GPI) is a high-contrast imaging instrument designed to directly image and characterize exoplanets. GPI is currently undergoing several upgrades to improve performance. In this paper, we discuss the upgrades to the GPI IFS. This primarily focuses on the design and performance improvements of new prisms and filters. This includes an improved high-resolution prism which will provide more evenly dispersed spectra across y, J, H and K-bands. Additionally, we discuss the design and implementation of a new low-resolution mode and prism which allow for imaging of all four bands (y, J, H and K-bands) simultaneously at R≈10. We explore the possibility of using a multiband filter which would block the light between the four spectral bands. We discuss possible performance improvements from the multiband filter, if implemented. Finally we explore the possibility of making small changes to the optical design to improve the IFS’s performance near the edge of the field of view.

Item Type:Book Section
Related URLs:
URLURL TypeDescription Paper
Chilcote, Jeffrey0000-0001-6305-7272
Konopacky, Quinn0000-0002-9936-6285
De Rosa, Robert0000-0002-4918-0247
Macintosh, Bruce0000-0003-1212-7538
Marois, Christian0000-0002-4164-4182
Perrin, Marshall0000-0002-3191-8151
Savransky, Dmitry0000-0002-8711-7206
Wang, Jason0000-0003-0774-6502
Additional Information:© 2020 Society of Photo-Optical Instrumentation Engineers (SPIE). The GPI 2.0 instrument upgrades are funded by NSF MRI Award Number 1920180. The GPI project has been supported by Gemini Observatory, which is operated by AURA, Inc., under a cooperative agreement with the NSF on behalf of the Gemini partnership: the NSF (USA), the National Research Council (Canada), CONICYT (Chile), the Australian Research Council (Australia), MCTI (Brazil) and MINCYT (Argentina).
Funding AgencyGrant Number
Gemini ObservatoryUNSPECIFIED
Association of Universities for Research in Astronomy (AURA)UNSPECIFIED
Gemini PartnershipUNSPECIFIED
Subject Keywords:exoplanets, high-contrast imaging, multi-band filters, integral field spectroscopy, direct imaging
Series Name:Proceedings of SPIE
Issue or Number:11447
Record Number:CaltechAUTHORS:20201222-141822676
Persistent URL:
Official Citation:Mary Anne Limbach, Jeffrey Chilcote, Quinn Konopacky, Robert De Rosa, Randall Hamper, Bruce Macintosh, Christian Marois, Marshall Perrin, Dmitry Savransky, Jean-Pierre Veran, Jason Wang, and Arlene Aleman "GPI 2.0: Upgrades to the IFS including new spectral modes", Proc. SPIE 11447, Ground-based and Airborne Instrumentation for Astronomy VIII, 114475D (13 December 2020);
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:107258
Deposited By: Tony Diaz
Deposited On:22 Dec 2020 23:27
Last Modified:16 Nov 2021 19:01

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