Design of the high-resolution optical spectrograph (HROS) for the Gemini telescope

Paolo D'Arrigo; Richard G. Bingham; Andrew Charalambous; Ian A. Crawford; Francisco Diego; James F. Percival; Trevor E. Savidge

doi:10.1117/12.395452

16 August 2000 Design of the high-resolution optical spectrograph (HROS) for the Gemini telescope

Paolo D'Arrigo, Richard G. Bingham, Andrew Charalambous, Ian A. Crawford, Francisco Diego, James F. Percival, Trevor E. Savidge

Author Affiliations +

Proceedings Volume 4008, Optical and IR Telescope Instrumentation and Detectors; (2000) https://doi.org/10.1117/12.395452
Event: Astronomical Telescopes and Instrumentation, 2000, Munich, Germany

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.

Citation Download Citation

Paolo D'Arrigo, Richard G. Bingham, Andrew Charalambous, Ian A. Crawford, Francisco Diego, James F. Percival, and Trevor E. Savidge "Design of the high-resolution optical spectrograph (HROS) for the Gemini telescope", Proc. SPIE 4008, Optical and IR Telescope Instrumentation and Detectors, (16 August 2000); https://doi.org/10.1117/12.395452

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