Share Email Print

Proceedings Paper

Characterisation of Herschel-SPIRE flight model optical performances
Author(s): Marc Ferlet; Glenn Laurent; Bruce Swinyard; Jason Glenn; Jamie Bock; Kjetil Dohlen
Format Member Price Non-Member Price
PDF $17.00 $21.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

The Spectral and Photometric Imaging Receiver (SPIRE) is one of three scientific instruments on ESA's Herschel Space Observatory. This long wavelength instrument covers 200 to 670μm with a three band photometric camera and a two band imaging Fourier Transform Spectrometer (IFTS). Following first results reported in a previous paper, we discuss the in-band optical performances of the flight model as measured extensively during several dedicated test campaigns. Complementary to the experimentally probed spectral characteristics of the instrument detailed in an accompanying paper (see L.D. Spencer et al., in these proceedings), attention is focused here on a set of standard but key tests aimed at measuring the spatial response of the Photometer and Spectrometer end-to-end optical chain, including detector. Effects of defocus as well as source size extent, in-band wavelength, and polarization are also investigated over respective Photometer and Spectrometer field-of-views. Comparison with optical modelling, based on instrument design knowledge and some of the internal component measured characteristics, is performed. Beyond the specific characterisation of each effect, this allows estimating in each band where optical behaviour and detector behaviour respectively dominates and also reconstructing some of the contributors to the instrument throughput. Based on this analysis, retrieved optical performances are finally assessed against the related science-driven instrument requirements.

Paper Details

Date Published: 12 July 2008
PDF: 12 pages
Proc. SPIE 7010, Space Telescopes and Instrumentation 2008: Optical, Infrared, and Millimeter, 70102U (12 July 2008); doi: 10.1117/12.788888
Show Author Affiliations
Marc Ferlet, Rutherford Appleton Lab. (United Kingdom)
Glenn Laurent, Univ. of Colorado, Boulder (United States)
Bruce Swinyard, Rutherford Appleton Lab. (United Kingdom)
Jason Glenn, Univ. of Colorado, Boulder (United States)
Jamie Bock, Jet Propulsion Lab. (United States)
California Institute of Technology (United States)
Kjetil Dohlen, Observatoire Astronomique de Marseille Provence (France)

Published in SPIE Proceedings Vol. 7010:
Space Telescopes and Instrumentation 2008: Optical, Infrared, and Millimeter
Jacobus M. Oschmann Jr.; Mattheus W. M. de Graauw; Howard A. MacEwen, Editor(s)

© SPIE. Terms of Use
Back to Top