9 August 2016 The Gemini High-Resolution Optical SpecTrograph (GHOST) bench spectrograph optical design
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Abstract
Gemini High-Resolution Optical SpecTrograph (GHOST) is a fiber-fed spectrograph being developed for the Gemini telescope. GHOST is a white pupil échelle spectrograph with high efficiency and a broad continuous wavelength coverage (363-1000nm) with R>50,000 in two-object mode and >75,000 in single-object mode. The design incorporates a novel zero-Petzval sum white pupil relay to eliminate grating aberrations at the cross-dispersers. Cameras are based on non-achromatic designs with tilted detectors to eliminate the need for exotic glasses. This paper outlines the optical design of the bench-mounted spectrograph and the predicted spectrograph resolution and efficiency for the spectrograph.
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John Pazder, John Pazder, Greg Burley, Greg Burley, Michael J. Ireland, Michael J. Ireland, Gordon Robertson, Gordon Robertson, Andrew Sheinis, Andrew Sheinis, Ross Zhelem, Ross Zhelem, } "The Gemini High-Resolution Optical SpecTrograph (GHOST) bench spectrograph optical design", Proc. SPIE 9908, Ground-based and Airborne Instrumentation for Astronomy VI, 99087F (9 August 2016); doi: 10.1117/12.2234366; https://doi.org/10.1117/12.2234366
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