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Proceedings Paper

GRACES: Gemini remote access to CFHT ESPaDOnS spectrograph through the longest astronomical fiber ever made: experimental phase completed
Author(s): André-Nicolas Chene; John Pazder; Gregory Barrick; Andre Anthony; Tom Benedict; Dave Duncan; Pedro Gigoux; Scot Kleinman; Lison Malo; Eder Martioli; Claire Moutou; Vinicius Placco; Vladimir Reshetovand; Jaehyon Rhee; Katherine Roth; Ricardo Schiavon; Eric V. Tollestrup; Tom A. Vermeulen; John White; Robert Wooff
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Paper Abstract

The Gemini Remote Access to CFHT ESPaDONS Spectrograph has achieved first light of its experimental phase in May 2014. It successfully collected light from the Gemini North telescope and sent it through two 270 m optical fibers to the the ESPaDOnS spectrograph at CFHT to deliver high-resolution spectroscopy across the optical region. The fibers gave an average focal ratio degradation of 14% on sky, and a maximum transmittance of 85% at 800nm. GRACES achieved delivering spectra with a resolution power of R = 40,000 and R = 66,000 between 400 and 1,000 nm. It has a ~8% throughput and is sensitive to target fainter than 21st mag in 1 hour. The average acquisition time of a target is around 10 min. This project is a great example of a productive collaboration between two observatories on Maunakea that was successful due to the reciprocal involvement of the Gemini, CFHT, and NRC Herzberg teams, and all the staff involved closely or indirectly.

Paper Details

Date Published: 28 July 2014
PDF: 16 pages
Proc. SPIE 9151, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation, 915147 (28 July 2014); doi: 10.1117/12.2057417
Show Author Affiliations
André-Nicolas Chene, Gemini Observatory (United States)
John Pazder, NRC - Herzberg Institute of Astrophysics (Canada)
Gregory Barrick, Canada-France-Hawaii Telescope Corp. (United States)
Andre Anthony, NRC - Herzburg Institute of Astrophysics (Canada)
Tom Benedict, Canada-France-Hawaii Telescope Corp. (United States)
Dave Duncan, NRC - Herzberg Institute of Astrophysics (Canada)
Pedro Gigoux, Gemini Observatory (United States)
Scot Kleinman, Gemini Observatory (United States)
Lison Malo, Canada-France-Hawaii Telescope Corp. (United States)
Eder Martioli, Lab. Nacional de Astrofísica (Brazil)
Claire Moutou, Canada-France-Hawaii Telescope Corp. (United States)
Vinicius Placco, Gemini Observatory (United States)
Vladimir Reshetovand, NRC - Herzberg Institute of Astrophysics (Canada)
Jaehyon Rhee, Oregon State Univ. (United States)
Katherine Roth, Gemini Observatory (United States)
Ricardo Schiavon, Liverpool John Moores Univ. (United Kingdom)
Eric V. Tollestrup, Gemini Observatory (United States)
Tom A. Vermeulen, Canada-France-Hawaii Telescope Corp. (United States)
John White, Gemini Observatory (United States)
Robert Wooff, NRC - Herzburg Institute of Astrophysics (Canada)

Published in SPIE Proceedings Vol. 9151:
Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation
Ramón Navarro; Colin R. Cunningham; Allison A. Barto, Editor(s)

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