Progress report on FORCAST grism spectroscopy as a future general observer instrument mode on SOFIA

Luke Keller; Casey P. Deen; Daniel T. Jaffe; Kimberly A. Ennico; Thomas P. Greene; Joseph D. Adams; Terry Herter; Gregory C. Sloan

doi:10.1117/12.857127

20 July 2010 Progress report on FORCAST grism spectroscopy as a future general observer instrument mode on SOFIA

Luke Keller, Casey P. Deen, Daniel T. Jaffe, Kimberly A. Ennico, Thomas P. Greene, Joseph D. Adams, Terry Herter, Gregory C. Sloan

Author Affiliations +

Proceedings Volume 7735, Ground-based and Airborne Instrumentation for Astronomy III; 77356N (2010) https://doi.org/10.1117/12.857127
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States

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.

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Luke Keller, Casey P. Deen, Daniel T. Jaffe, Kimberly A. Ennico, Thomas P. Greene, Joseph D. Adams, Terry Herter, and Gregory C. Sloan "Progress report on FORCAST grism spectroscopy as a future general observer instrument mode on SOFIA", Proc. SPIE 7735, Ground-based and Airborne Instrumentation for Astronomy III, 77356N (20 July 2010); https://doi.org/10.1117/12.857127

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