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Proceedings Paper

Progress report on FORCAST grism spectroscopy as a future general observer instrument mode on SOFIA
Author(s): Luke Keller; Casey P. Deen; Daniel T. Jaffe; Kimberly A. Ennico; Thomas P. Greene; Joseph D. Adams; Terry Herter; Gregory C. Sloan
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Paper Abstract

We have implemented and tested a suite of grisms that will enable a moderate-resolution mid-infrared spectroscopic mode in FORCAST, the facility mid-infrared camera on SOFIA. We have tested the hardware for the spectral modes extensively in the laboratory with grisms installed in the FORCAST filter wheels. The grisms perform as designed, consistently producing spectra at resolving powers in the 200-1200 range at wavelengths from 5 to 38 microns. In anticipation of offering this capability as a SOFIA general observer mode, we are developing software for reduction and analysis of FORCAST spectra, a spectrophotometric calibration plan, and detailed plans for in-flight tests prior to commissioning the modes. We present a brief summary of the FORCAST grism spectroscopic system and a status report.

Paper Details

Date Published: 20 July 2010
PDF: 6 pages
Proc. SPIE 7735, Ground-based and Airborne Instrumentation for Astronomy III, 77356N (20 July 2010); doi: 10.1117/12.857127
Show Author Affiliations
Luke Keller, Ithaca College (United States)
Casey P. Deen, The Univ. of Texas at Austin (United States)
Daniel T. Jaffe, The Univ. of Texas at Austin (United States)
Kimberly A. Ennico, NASA Ames Research Ctr. (United States)
Thomas P. Greene, NASA Ames Research Ctr. (United States)
Joseph D. Adams, Cornell Univ. (United States)
Terry Herter, Cornell Univ. (United States)
Gregory C. Sloan, Cornell Univ. (United States)

Published in SPIE Proceedings Vol. 7735:
Ground-based and Airborne Instrumentation for Astronomy III
Ian S. McLean; Suzanne K. Ramsay; Hideki Takami, Editor(s)

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