Opto-mechanical design of the KMOS spectrograph module

Matthias Tecza; Ian J. Lewis; James Lynn; Stephanie Yang; Niranjan A. Thatte; Ian A. J. Tosh; Marc J. Ferlet

doi:10.1117/12.672009

29 June 2006 Opto-mechanical design of the KMOS spectrograph module

Matthias Tecza, Ian J. Lewis, James Lynn, Stephanie Yang, Niranjan A. Thatte, Ian A. J. Tosh, Marc J. Ferlet

Proceedings Volume 6269, Ground-based and Airborne Instrumentation for Astronomy; 62694G (2006) https://doi.org/10.1117/12.672009
Event: SPIE Astronomical Telescopes + Instrumentation, 2006, Orlando, Florida , United States

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.

Citation Download Citation

Matthias Tecza, Ian J. Lewis, James Lynn, Stephanie Yang, Niranjan A. Thatte, Ian A. J. Tosh, and Marc J. Ferlet "Opto-mechanical design of the KMOS spectrograph module", Proc. SPIE 6269, Ground-based and Airborne Instrumentation for Astronomy, 62694G (29 June 2006); https://doi.org/10.1117/12.672009

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