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Proceedings Paper

Design of the high-resolution optical spectrograph (HROS) for the Gemini telescope
Author(s): Paolo D'Arrigo; Richard G. Bingham; Andrew Charalambous; Ian A. Crawford; Francisco Diego; James F. Percival; Trevor E. Savidge
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Paper Abstract

HROS will be the key instrument for high resolution spectroscopy for UV to near-IR wavelengths at eh Gemini South telescope. The instrument is unique in providing a resolving power of R equals 50,000 at the Cassegrain focus of an 8-meter telescope. Taking advantage of this location, the spectrograph is optimized for high throughput, particularly for the UV region, and high efficiency. Here we present the final opto-mechanical design of the spectrograph, together with its predicted performance. In particular, we show how our design delivers an overall peak throughput of almost 30 percent and coverage of wavelengths between 325 and 885 nm in a single CCD exposure. We also discus the development of the design form the science requirements and some of the mechanical issues that drove it to this solution. Finally we report on the current status of optics procurement and testing.

Paper Details

Date Published: 16 August 2000
PDF: 8 pages
Proc. SPIE 4008, Optical and IR Telescope Instrumentation and Detectors, (16 August 2000); doi: 10.1117/12.395452
Show Author Affiliations
Paolo D'Arrigo, Univ. College London (United Kingdom)
Richard G. Bingham, Univ. College London (United Kingdom)
Andrew Charalambous, Univ. College London (United Kingdom)
Ian A. Crawford, Univ. College London (United Kingdom)
Francisco Diego, Univ. College London (United Kingdom)
James F. Percival, Univ. College London (United Kingdom)
Trevor E. Savidge, Univ. College London (United Kingdom)

Published in SPIE Proceedings Vol. 4008:
Optical and IR Telescope Instrumentation and Detectors
Masanori Iye; Alan F. M. Moorwood, Editor(s)

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