Gemini high-resolution optical spectrograph conceptual design

Kei Szeto*, Alan McConnachie, Andre Anthony, David Bohlender, David Crampton, Pierre Desaulniers, Jennifer Dunn, Tim Hardy, Alexis Hill, Dmitry Monin, John Pazder, Christian Schwab, Paolo Spano, Else Starkenburg, Simon Thibault, Gordon Walker, Kim Venn, Hu Zhang

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

4 Citations (Scopus)

Abstract

A multiplexed moderate resolution (R = 34,000) and a single object high resolution (R = 90,000) spectroscopic facility for the entire 340-950nm wavelength region has been designed for Gemini. The result is a high throughput, versatile instrument that will enable precision spectroscopy for decades to come. The extended wavelength coverage for these relatively high spectral resolutions is achieved by use of an Echelle grating with VPH cross-dispersers and for the R = 90,000 mode utilization of an image slicer. The design incorporates a fast, efficient, reliable system for acquiring targets over the7 arcmin field of Gemini. This paper outlines the science case development and requirements flow-down process that leads to the configuration of the HIA instrument and describes the overall GHOS conceptual design. In addition, this paper discusses design trades examined during the conceptual design study instrument group of the Herzberg Institute of Astrophysics has been commissioned by the Gemini Observatory as one of the three competing organizations to conduct a conceptual design study for a new Gemini High-Resolution Optical Spectrograph (GHOS). This paper outlines the science case development and requirements flow-down process that leads to the configuration of the HIA instrument and describes the overall GHOS conceptual design. In addition, this paper discusses design trades examined during the conceptual design study.

Original languageEnglish
Title of host publicationGround-Based and Airborne Instrumentation for Astronomy IV
EditorsIan S. McLean, Suzanne K. Ramsay, Hideki Takami
Place of PublicationBellingham, WA
PublisherSPIE
Pages1-15
Number of pages15
Volume8446
ISBN (Print)9780819491473
DOIs
Publication statusPublished - 2012
Externally publishedYes
EventGround-Based and Airborne Instrumentation for Astronomy IV - Amsterdam, Netherlands
Duration: 1 Jul 20126 Jul 2012

Other

OtherGround-Based and Airborne Instrumentation for Astronomy IV
CountryNetherlands
CityAmsterdam
Period1/07/126/07/12

Keywords

  • CCD detector
  • Design trade
  • Echelle
  • Fiber
  • Instrument software
  • Motion control
  • Pickoff
  • White pupil relay

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