Share Email Print

Proceedings Paper

Moderate Resolution Spectroscopy For The Space Infrared Telescope Facility (SIRTF)
Author(s): J. R. Houck; S. V. W. Beckwith; T. Herter; E. E. Salpeter; W. J. Forrest; K. Matthews; B. T. Soifer; D. Watson; T. Roellig; D. Weedman; L. R. Bauman; C. H. Downey; H. J. Reitsema; D. W. Strecker
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

A conceptual design for an infrared spectrometer capable of both low resolution (λ/Δ-λ = 50; 2.5-200 microns) and moderate resolution (1000; 4-200 microns) and moderate resolution (1000; 4-200 microns) has been developed. This facility instrument will permit the spectroscopic study in the infrared of objects ranging from within the solar system to distant galaxies. The spectroscopic capability provided by this instrument for SIRTF will give astronomers orders of magnitude greater sensitivity for the study of faint objects than had been previously available. The low resolution mode will enable detailed studies of the continuum radiation. The moderate resolution mode of the instrument will permit studies of a wide range of problems, from the infrared spectral signatures of small outer solar system bodies such as Pluto and the satellites of the giant planets, to investigations of more luminous active galaxies and QS0s at substantially greater distances. A simple design concept has been developed for the spectrometer which supports the science investigation with practical cryogenic engineering. Operational flexibility is preserved with a minimum number of mechanisms. The five modules share a common aperture, and all gratings share a single scan mechanism. High reliability is achieved through use of flight-proven hardware concepts and redundancy. The design controls the heat load into the SIRTF cryogen, with all heat sources other than the detectors operating at 7K and isolated from the 4K cold station. Two-dimensional area detector arrays are used in the 2.5-120μm bands to simultaneously monitor adjacent regions in extended objects and to measure the background near point sources.

Paper Details

Date Published: 1 May 1986
PDF: 4 pages
Proc. SPIE 0589, Instrumentation for Optical Remote Sensing from Space, (1 May 1986); doi: 10.1117/12.951938
Show Author Affiliations
J. R. Houck, Cornell University (United States)
S. V. W. Beckwith, Cornell University (United States)
T. Herter, Cornell University (United States)
E. E. Salpeter, Cornell University (United States)
W. J. Forrest, University of Rochester (United States)
K. Matthews, California Institute of Technology (United States)
B. T. Soifer, California Institute of Technology (United States)
D. Watson, California Institute of Technology (United States)
T. Roellig, NASA-Ames Research Center (United States)
D. Weedman, Pennsylvania State University (United States)
L. R. Bauman, Ball Aerospace Corporation (United States)
C. H. Downey, Ball Aerospace Corporation (United States)
H. J. Reitsema, Ball Aerospace Corporation (United States)
D. W. Strecker, Ball Aerospace Corporation (United States)

Published in SPIE Proceedings Vol. 0589:
Instrumentation for Optical Remote Sensing from Space
John W. Lear; Andre Monfils; Sidney L. Russak; John S. Seeley, Editor(s)

© SPIE. Terms of Use
Back to Top
Sign in to read the full article
Create a free SPIE account to get access to
premium articles and original research
Forgot your username?