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Faint Object infraRed CAmera for the SOFIA Telescope (FORCAST)
Facility class Science Instrument
Principal Investigator: Terry Herter
Center for Radiophysics & Space Research, Cornell University, Ithaca, NY 14853
FORCAST is a dual-channel mid-infrared camera and spectrograph sensitive from 5 – 40 μm. Each channel consists of a 256x256 pixel array that yields a 3.4'x3.2' instantaneous field-of-view with 0.768'' pixels, after distortion correction. The Short Wave Camera (SWC) uses a Si:As blocked-impurity band (BIB) array optimized for λ < 25 μm, while the Long Wave Camera's (LWC) Si:Sb BIB array is optmized for λ > 25 μm. Observations can be made through either of the two channels individually or, by use of a dichroic mirror, with both channels simultaneously across the entire range. Spectroscopy is also possible using a suite of grisms, which provide coverage from 5 – 40 μm with a low spectral resolution of R = λ/Δλ ≈ 200.
Examples of FORCAST scientific observations and summary of specifications: FORCAST Flyer
Information applicable to the current observing cycle, Cycle 7, can be found in the FORCAST chapter of the Cycle 7 Observer's Handbook. Be sure that you are referencing the correct version of the handbook!
Use when citing SOFIA/FORCAST results.
"Quick-Look Reduction Software for FORCAST Grism Mode on SOFIA,"
Deen et al., 2010, Proc. SPIE, 7735, 773570.
"Testing of Mid-infrared Detector Arrays for FORCAST"
Adams et al., 2004, ProcSPIE, 5499, 442.