Bracken, C;
O'Sullivan, C;
Murphy, JA;
Donohoe, A;
Savini, G;
Lightfoot, J;
Juanola-Parramon, R;
(2016)
Quasi-optical analysis of a far-infrared spatio-spectral space interferometer concept.
Infrared Physics & Technology
, 77
pp. 171-178.
10.1016/j.infrared.2016.05.030.
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Abstract
FISICA (Far-Infrared Space Interferometer Critical Assessment) was a three year study of a far-infrared spatio-spectral double-Fourier interferometer concept. One of the aims of the FISICA study was to set-out a baseline optical design for such a system, and to use a model of the system to simulate realistic telescope beams for use with an end-to-end instrument simulator. This paper describes a two-telescope (and hub) baseline optical design that fulfils the requirements of the FISICA science case, while minimising the optical mass of the system. A number of different modelling techniques were required for the analysis: fast approximate simulation tools such as ray tracing and Gaussian beam methods were employed for initial analysis, with GRASP physical optics used for higher accuracy in the final analysis. Results are shown for the predicted far-field patterns of the telescope primary mirrors under illumination by smooth walled rectangular feed horns. Far-field patterns for both on-axis and off-axis detectors are presented and discussed.
| Type: | Article |
|---|---|
| Title: | Quasi-optical analysis of a far-infrared spatio-spectral space interferometer concept |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.infrared.2016.05.030 |
| Publisher version: | http://doi.org/10.1016/j.infrared.2016.05.030 |
| Language: | English |
| Additional information: | © 2016 Elsevier B.V. All rights reserved. This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Science & Technology, Technology, Physical Sciences, Instruments & Instrumentation, Optics, Physics, Applied, Physics, Far-infrared, FISICA, Interferometry, Double-Fourier, PyFIInS (Python Far-Infrared Instrument Simulator), Quasi-optics, Physical optics, TELESCOPE, RESOLUTION |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1519917 |
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