Prof. Niranjan Thatte: Publications

SWIFT image slicer: Large format, compact, low scatter image slicing

Proceedings of SPIE the International Society for Optical Engineering 6273 II (2006)

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.

The Oxford SWIFT integral field spectrograph

Proceedings of SPIE Vol 6269 (2006) 113-125

Authors:

N Thatte, Clarke, Fraser, Goodsall, Timothy, Tecza, Matthias

KMOS: A multi-object deployable-IFU spectrometer for the ESO VLT

NEW ASTRON REV 50:4-5 (2006) 370-373

Authors:

R Sharples, R Bender, R Bennett, K Burch, P Carter, P Clark, R Content, R Davies, R Davies, M Dubbeldam, R Genzel, A Hess, K Laidlaw, M Lehnert, I Lewis, B Muschielok, S Ramsey-Howat, P Rees, D Robertson, I Robson, R Saglia, M Tecza, N Thatte, S Todd, B Wall, M Wegner

Abstract:

We describe the design of a 2nd generation instrument for the ESO VLT which uses 24 cryogenic pickoff arms linked to diamond-machined image slicing integral field units to deliver a unique multiple deployable integral field capability in the near-infrared (1-2.5 mu m). The science requirements for the instrument are presented and linked to the functional specification. The baseline instrument concept is described with emphasis on technological innovations. (c) 2006 Elsevier B.V. All rights reserved.

The central kinematics of NGC 1399 measured with 14 pc resolution

Monthly Notices of the Royal Astronomical Society 367 (2006) 2-18

Authors:

SJ Magorrian, R.C.W. Houghton, M. Sarzi, N. Thatte

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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