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arXiv · astro-ph/9706297

GOHSS: a Fibre-fed Multiobject NIR Spectrograph for the Italian Galileo Telescope

R. Scaramella·E. Cascone·F. Cortecchia·R. S. Ellis·D. Lorenzetti·D. Mancini·I. Parry·F. Piche'·F. Vitali
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Abstract

We present the concept and preliminary design of the Galileo OH Subtracted Spectrograph [GOHSS], a multifibre NIR spectrograph for faint objects. The instrument represents a collaboration between the Institute of Astronomy, Cambridge and the Observatories of Naples and Rome and will be a second-light instrument for the 3.6m Galileo telescope located on La Palma. The NIR spectrograph accomplishes OH night-sky suppression in a different way from the hardware solution used by both OHS (Maihara etal) and COHSI (Piche' et al). GOHSS provides a multiechelle design with software subtraction capable of yielding ~28 spectra in J+H bands at a spectral resolution R~3000. Such a resolution is the minimum necessary to reduce the impact of atmospheric OH lines.

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R. Scaramella, E. Cascone, F. Cortecchia, R. S. Ellis, D. Lorenzetti, D. Mancini, I. Parry, F. Piche', F. Vitali. 1997-06-30. GOHSS: a Fibre-fed Multiobject NIR Spectrograph for the Italian Galileo Telescope. https://arxiv.org/abs/astro-ph/9706297

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