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Proceedings Paper

Design of a mid-IR polarimeter for SOFIA
Author(s): C. Packham; M. Escuti; G. Boreman; I Quijano; J. C. Ginn; B. Franklin; D. J. Axon; J. H. Hough; T. J. Jones; P. F. Roche; M. Tamura; C. M. Telesco; N. Levenson; J. M. Rodgers; J. P. McGuire
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Paper Abstract

Mid-infrared polarimetry remains an underexploited technique; where available it is limited in spectral coverage from the ground, and conspicuously absent from the Spitzer, JWST and Herschel instrument suites. The unique characteristics of SOFIA afford unprecedented spectral coverage and sensitivity in the mid-infrared waveband. We discuss the preliminary optical design for a 5-40μm spectro-polarimeter for use on SOFIA, the SOFIA Mid-InfraRed Polarimeter (SMIRPh). The design furthers the existing 5-40μm imaging and spectroscopic capabilities of SOFIA, and draws on experience gained through the University of Florida's mid-IR imagers, spectrometer and polarimeter designs of T-ReCS and CanariCam. We pay special attention to the challenges of obtaining polarimetric materials suitable at both these wavelengths and cryogenic temperatures. Finally, we (briefly) present an overview of science highlights that could be performed from a 5-40μm imaging- and spectro-polarimeter on SOFIA. Combined with the synergy between the possible future far-IR polarimeter, Hale, this instrument would provide the SOFIA community with unique and exciting science capabilities, leaving a unique scientific legacy.

Paper Details

Date Published: 9 July 2008
PDF: 14 pages
Proc. SPIE 7014, Ground-based and Airborne Instrumentation for Astronomy II, 70142H (9 July 2008); doi: 10.1117/12.789843
Show Author Affiliations
C. Packham, Univ. of Florida (United States)
M. Escuti, North Carolina State Univ. (United States)
G. Boreman, The College of Optics and Photonics, Univ. of Central Florida (United States)
I Quijano, The College of Optics and Photonics, Univ. of Central Florida (United States)
J. C. Ginn, The College of Optics and Photonics, Univ. of Central Florida (United States)
B. Franklin, The College of Optics and Photonics, Univ. of Central Florida (United States)
D. J. Axon, Rochester Institute of Technology (United States)
J. H. Hough, Univ. of Hertfordshire (United Kingdom)
T. J. Jones, Univ. of Minnesota (United States)
P. F. Roche, Oxford Univ. (United Kingdom)
M. Tamura, National Astronomical Observatory of Japan (Japan)
C. M. Telesco, Univ. of Florida (United States)
N. Levenson, Univ. of Kentucky (United States)
J. M. Rodgers, Optical Research Associates (United States)
J. P. McGuire, Optical Research Associates (United States)

Published in SPIE Proceedings Vol. 7014:
Ground-based and Airborne Instrumentation for Astronomy II
Ian S. McLean; Mark M. Casali, Editor(s)

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