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Home > Information for Researchers > Science Instrument Suite > FORCAST



The Faint Object infraRed CAmera for the SOFIA Telescope (FORCAST) is a Facility class Science Instrument.

Principal Investigator: Dr. Terry Herter
Instrument Team Pages:

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. (A higher spectral resolution mode originally planned, with R ≈ 1000, is not available for Cycle 4.)

Examples of FORCAST scientific observations, and summary of specifications

Those intending to submit a SOFIA observing proposal using the instrument should consult the FORCAST Chapter of the SOFIA Observer's Handbook, which contains detailed and up to date information necessary for designing observations.

FORCAST Scientific/Technical Abstract and Additional References

FORCAST instrument

FORCAST instrument (NASA/Tom Tschida)

Page Last Updated: April 29, 2015
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