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Proceedings Paper

HIRDLS functional performance in orbit: a summary
Author(s): C. L. Hepplewhite; J. J. Barnett; J. G. Whitney; C. W. P. Palmer; O. O. Oduleye; T. W. Walton; M. Dials; J. G. Gille; T. Eden Jr.; B. Nardi
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Paper Abstract

The functional performance of the NASA Aura HIRDLS instrument since launch on the 15th July 2004 is presented and discussed. The HIRDLS (High Resolution Infra-red Limb Sounder) is a 21-channel infra-red radiometer, using actively cooled MCT detectors on a common focal plane. It has many features that provide considerable flexibility of the commanding, control and the format and content of the telemetry. HIRDLS also features a precision 2-axis scan mirror and gyroscopes that are attached to the optical bench and together they provide additional data on the line of sight on small time scales. The stability of the temperature control of the focal plane and critical optical components is also presented and discussed. To-date the instrument has performed functionally without fault and in many aspects well within specifications. The only problem (and a serious one) so far encountered has been the optical blockage of the main aperture, which is discussed in other papers. Some aspects of the instrument that have been utilised to help characterise the blockage are outlined.

Paper Details

Date Published: 13 September 2005
PDF: 10 pages
Proc. SPIE 5883, Infrared Spaceborne Remote Sensing 2005, 58830J (13 September 2005); doi: 10.1117/12.624163
Show Author Affiliations
C. L. Hepplewhite, Oxford Univ. (United Kingdom)
J. J. Barnett, Oxford Univ. (United Kingdom)
J. G. Whitney, Oxford Univ. (United Kingdom)
C. W. P. Palmer, Oxford Univ. (United Kingdom)
O. O. Oduleye, Oxford Univ. (United Kingdom)
T. W. Walton, Oxford Univ. (United Kingdom)
M. Dials, Univ. of Colorado at Boulder (United States)
J. G. Gille, Univ. of Colorado at Boulder (United States)
T. Eden Jr., National Ctr. For Atmospheric Research (United States)
B. Nardi, National Ctr. For Atmospheric Research (United States)

Published in SPIE Proceedings Vol. 5883:
Infrared Spaceborne Remote Sensing 2005
Marija Strojnik, Editor(s)

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