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Proceedings Paper

Opto-mechanical design of the KMOS spectrograph module
Author(s): Matthias Tecza; Ian J. Lewis; James Lynn; Stephanie Yang; Niranjan A. Thatte; Ian A. J. Tosh; Marc J. Ferlet
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Paper Abstract

We present the optical and mechanical design of the KMOS spectrograph module together with a detailed analysis of its performance. KMOS is a cryogenic near-infrared multi-object spectrograph being developed as a second-generation instrument for the VLT by a consortium of UK and German institutes. Three identical spectrograph modules provide Nyquist sampled spectra in the wavelength range covering the atmospheric bands z, J, H, and K with a resolving power exceeding 3200. The spectrographs are fully achromatic over the bands and the single mirror collimator and six-element camera, together with six high efficiency gratings provide high throughput. The optical performance analysis includes amongst others the spectral resolving power and variation of the PSF as a function of the pupil illumination.

Paper Details

Date Published: 29 June 2006
PDF: 11 pages
Proc. SPIE 6269, Ground-based and Airborne Instrumentation for Astronomy, 62694G (29 June 2006); doi: 10.1117/12.672009
Show Author Affiliations
Matthias Tecza, Univ. of Oxford (United Kingdom)
Ian J. Lewis, Univ. of Oxford (United Kingdom)
James Lynn, Univ. of Oxford (United Kingdom)
Stephanie Yang, Univ. of Oxford (United Kingdom)
Niranjan A. Thatte, Univ. of Oxford (United Kingdom)
Ian A. J. Tosh, Rutherford Appleton Lab. (United Kingdom)
Marc J. Ferlet, Rutherford Appleton Lab. (United Kingdom)

Published in SPIE Proceedings Vol. 6269:
Ground-based and Airborne Instrumentation for Astronomy
Ian S. McLean; Masanori Iye, Editor(s)

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