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The immersed echelle - I. Basic properties

Szumski, R; Walker, DD; (1999) The immersed echelle - I. Basic properties. Monthly Notices of the Royal Astronomical Society , 302 (1) 139 - 144. 10.1046/j.1365-8711.1999.02107.x. Green open access

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Abstract

High-resolution spectrographs for very large telescopes lead to new challenges in grating technology to achieve optimum matching of the slit width to the seeing disc. This has led elsewhere to the development of long echelles of high blaze angle produced by mosaicking technology. An alternative approach, pursued in this paper and adopted for the Gemini High-Resolution Optical Spectrograph, is to immerse a monolithic echelle in a medium of refractive index greater than unity. This paper explores the consequences of this. It will be followed by Paper II, which will report on a major technology development programme in progress.

Type: Article
Title: The immersed echelle - I. Basic properties
Open access status: An open access version is available from UCL Discovery
DOI: 10.1046/j.1365-8711.1999.02107.x
Publisher version: http://dx.doi.org/10.1046/j.1365-8711.1999.02107.x
Language: English
Additional information: © 1999 RAS Definitive versions of articles pre-2013 are available at http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1365-2966, now published by http://mnras.oxfordjournals.org
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
URI: https://discovery.ucl.ac.uk/id/eprint/22672
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