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

John Pazder | Zendy; Greg Burley | Zendy; Michael Ireland | Zendy; Gordon Robertson | Zendy; Andrew Sheinis | Zendy; Ross Zhelem | Zendy

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

Author(s) -

John Pazder,

Greg Burley,

Michael Ireland,

Gordon Robertson,

Andrew Sheinis,

Ross Zhelem

Publication year - 2016

Publication title -

proceedings of spie, the international society for optical engineering/proceedings of spie

Language(s) - English

Resource type - Conference proceedings

SCImago Journal Rank - 0.192

H-Index - 176

eISSN - 1996-756X

pISSN - 0277-786X

DOI - 10.1117/12.2234366

Subject(s) - spectrograph , achromatic lens , optics , physics , telescope , spectral resolution , astronomy , spectral line

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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