Performance of the integral field spectrograph for the Gemini Planet Imager

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DOIResolve DOI: http://doi.org/10.1117/12.925790
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TypeArticle
Proceedings titleGround-based and Airborne Instrumentation for Astronomy IV
Series titleProceedings of SPIE; Volume 8446
ConferenceGround-Based and Airborne Instrumentation for Astronomy IV, July 1-6, 2012, Amsterdam, Netherlands
ISSN0277-786X
ISBN9780819491473
Article number84468W
SubjectExtra solar planets; Field of views; HAWAII-2RG; High quality; Integral field spectrograph; Jovian planets; Lawrence livermore national laboratories; Lenslet array; Noise source; Vibration isolations; Wollaston prism; Polarimeters
AbstractWe present performance results, from in-lab testing, of the Integral Field Spectrograph (IFS) for the Gemini Planet Imager (GPI). GPI is a facility class instrument for the Gemini Observatory with the primary goal of directly detecting young Jovian planets. The GPI IFS is based on concepts from the OSIRIS instrument at Keck and utilizes an infrared transmissive lenslet array to sample a rectangular 2.8 x 2.8 arcsecond field of view. The IFS provides low-resolution spectra across five bands between 1 and 2.5 μm. Alternatively, the dispersing element can be replaced with a Wollaston prism to provide broadband polarimetry across the same five filter bands. The IFS construction was based at the University of California, Los Angeles in collaboration with the Université de Montréal, Immervision and Lawrence Livermore National Laboratory. During its construction, we encountered an unusual noise source from microphonic pickup by the Hawaii-2RG detector. We describe this noise and how we eliminated it through vibration isolation. The IFS has passed its preship review and was shipped to University of California, Santa Cruz at the end of 2011 for integration with the remaining sub-systems of GPI. The IFS has been integrated with the rest of GPI and is delivering high quality spectral datacubes of GPI's coronagraphic field.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); National Science Infrastructure
Peer reviewedYes
NPARC number21270277
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Record identifier6e3684b2-fa67-4444-b7a1-b48b2fa90aa1
Record created2014-01-20
Record modified2016-05-09
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