FIRI (Far Infrared Interferometer) is a concept for a space-based spatial-spectral interferometer with an operating wavelength range 25-300 μm and sub-arcsecond angular resolution, and is based in Double Fourier Spatio-Spectral Interferometry (Mariotti and Ridgway 1988) to achieve high spectral and spatial resolution in the Far Infrared. The current status of the design of the FIRI system via an instrument simulator is presented.

© 2013 Optical Society of America

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