Exoplanet atmospheres

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Design of the KMOS multi-object integral field spectrograph - art. no. 62691C

P SOC PHOTO-OPT INS 6269 (2006) C2691-C2691

Authors:

R Sharples, R Bender, R Bennett, K Burch, P Carter, M Casali, P Clark, R Content, R Davies, R Davies, M Dubbeldam, G Finger, R Genzel, R Haefner, A Hess, M Kissler-Patig, K Laidlaw, M Lehnert, I Lewis, A Moorwood, B Muschielok, NF Schreiber, J Pirard, SR Howat, P Rees, J Richter, D Robertson, I Robson, R Saglia, M Tecza, N Thatte, S Todd, M Wegner

Abstract:

KMOS is a near-infrared multi-object integral field spectrometer which has been selected as one of a suite of second-generation instruments to be constructed for the ESO VLT in Chile. The instrument will be built by a consortium of UK and German institutes working in partnership with ESO and is currently at the end of its preliminary design phase. We present the design status of KMOS and discuss the most novel technical aspects and the compliance with the technical specification.
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Improved near-infrared methane band models and k-distribution parameters from 2000 to 9500 cm-1 and implications for interpretation of outer planet spectra

Icarus 181 (2006) 309-319

Authors:

PG Irwin, L.A. Sromovsky, E.K. Strong, K. Sihra
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Jupiter-sized planets in the Solar System and elsewhere

Chapter in Solar system update, Springer Verlag (2006)
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Opto-mechanical design of the KMOS spectrograph module - art. no. 62694G

P SOC PHOTO-OPT INS 6269 (2006) G2694-G2694

Authors:

M Tecza, IJ Lewis, J Lynn, S Yang, NA Thatte, IAJ Tosh, MJ Ferlet

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.
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SWIFT Image Slicer: large format, compact, low-scatter image slicing - art. no. 62732L

P SOC PHOTO-OPT INS 6273 (2006) L2732-L2732

Authors:

M Tecza, N Thatte, F Clarke, T Goodsall, D Freeman, Y Salaun

Abstract:

We present the SWIFT image slicer and its novel de-magnifying design. It is based on the MPE-3D and SPIFFI image slicers, uses plane mirrors to slice the input field, but achieves a considerable de-magnification through the use of a mosaic of spherical lenses. As only plane and spherical surfaces are used in the design, classical polishing techniques can be applied to achieve very high surface accuracy and quality. This reduces aberrations and scattered light, mandatory for an image slicer working at optical wavelengths and behind an adaptive optics system. Except for the lens mosaic, the SWIFT slicer is built entirely from Zerodur and is assembled using optical contacting. We present a detailed description of the design as well as results of the early stages of its fabrication.
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