Conceptual design of the high-resolution optical spectrograph for the Gemini South Telescope

Francisco Diego, D. Brooks, Andrew Charalambous, Ian A. Crawford, P. D'Arrigo, Mark Dryburgh, Heshmat Jamshidi, Alan S. Radley, T. Savidge, David D. Walker

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

7 Citations (Scopus)


The high resolution optical spectrograph (HROS) for Gemini is currently within its conceptual design phase. The science requirements for this instrument demand spectral resolutions of 50,000 and 120,000 with entrance slits of 0.57 and 0.24 arcsec respectively. Amongst the current large telescope projects, HROS will be the only instrument of its class to be mounted at a Cassegrain station and this will pose considerable technical challenges which are described in this paper: HROS will be a spectrograph with unique characteristics, like prismatic cross-dispersion, immersed echelle grating and active compensation of flexure. HROS is expected to perform better than any other high resolution spectrograph with respect to throughput, resolution and simultaneous spectral coverage.

Original languageEnglish
Title of host publicationOptical Telescopes of Today and Tomorrow
EditorsArne L. Ardeberg
Number of pages9
ISBN (Print)0819422681, 9780819422682
Publication statusPublished - 21 Mar 1997
Externally publishedYes
EventOptical Telescopes of Today and Tomorrow - Landskrona/Hven, Sweden
Duration: 29 May 19962 Jun 1996

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


ConferenceOptical Telescopes of Today and Tomorrow
Internet address


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