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Proceedings Paper

Testing the Long Wavelength Spectrometer for ISO
Author(s): Roger J. Emery; Kenneth J. King; Bruce Miles Swinyard; Sarah E. Church
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Paper Abstract

The Infrared Space Observatory (ISO) has a complement of four focal plane instruments for making a range of astronomical observations at infrared wavelengths. The telescope and instruments are operated at cryogenic temperature. Spectroscopy is shared between two of these instruments, with the Long Wavelength Spectrometer (LWS) providing for spectroscopic observation over the wavelength range 43 micrometers to 198 micrometers at two resolving powers. The flight model of the LWS has been completed, following an extensive program of performance testing and calibration at the Rutherford Appleton Laboratory. For this, a test facility has been developed to provide the necessary operating and environmental conditions, including a very low thermal background. The design and operational details of the test facility are given, followed by examples of the LWS performance values obtained. The data from these measurements will provide the initial calibration of the LWS in-orbit.

Paper Details

Date Published: 20 October 1993
PDF: 9 pages
Proc. SPIE 1946, Infrared Detectors and Instrumentation, (20 October 1993); doi: 10.1117/12.158679
Show Author Affiliations
Roger J. Emery, Rutherford Appleton Lab. (United Kingdom)
Kenneth J. King, Rutherford Appleton Lab. (United Kingdom)
Bruce Miles Swinyard, Rutherford Appleton Lab. (United Kingdom)
Sarah E. Church, Queen Mary and Westfield College (United Kingdom)

Published in SPIE Proceedings Vol. 1946:
Infrared Detectors and Instrumentation
Albert M. Fowler, Editor(s)

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