The Gemini High-Resolution Optical SpecTrograph (GHOST) bench spectrograph optical design

John Pazder; Greg Burley; Michael J. Ireland; Gordon Robertson; Andrew Sheinis; Ross Zhelem

doi:10.1117/12.2234366

9 August 2016 The Gemini High-Resolution Optical SpecTrograph (GHOST) bench spectrograph optical design

John Pazder, Greg Burley, Michael J. Ireland, Gordon Robertson, Andrew Sheinis, Ross Zhelem

Proceedings Volume 9908, Ground-based and Airborne Instrumentation for Astronomy VI; 99087F (2016) https://doi.org/10.1117/12.2234366
Event: SPIE Astronomical Telescopes + Instrumentation, 2016, Edinburgh, United Kingdom

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.

Citation Download Citation

John Pazder, Greg Burley, Michael J. Ireland, Gordon Robertson, Andrew Sheinis, and 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); https://doi.org/10.1117/12.2234366

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