28 July 2014 GRACES: Gemini remote access to CFHT ESPaDOnS spectrograph through the longest astronomical fiber ever made: experimental phase completed
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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.
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André-Nicolas Chene, André-Nicolas Chene, John Pazder, John Pazder, Gregory Barrick, Gregory Barrick, Andre Anthony, Andre Anthony, Tom Benedict, Tom Benedict, Dave Duncan, Dave Duncan, Pedro Gigoux, Pedro Gigoux, Scot Kleinman, Scot Kleinman, Lison Malo, Lison Malo, Eder Martioli, Eder Martioli, Claire Moutou, Claire Moutou, Vinicius Placco, Vinicius Placco, Vladimir Reshetovand, Vladimir Reshetovand, Jaehyon Rhee, Jaehyon Rhee, Katherine Roth, Katherine Roth, Ricardo Schiavon, Ricardo Schiavon, Eric V. Tollestrup, Eric V. Tollestrup, Tom A. Vermeulen, Tom A. Vermeulen, John White, John White, Robert Wooff, Robert Wooff, } "GRACES: Gemini remote access to CFHT ESPaDOnS spectrograph through the longest astronomical fiber ever made: experimental phase completed", Proc. SPIE 9151, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation, 915147 (28 July 2014); doi: 10.1117/12.2057417; https://doi.org/10.1117/12.2057417
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