FIRI (Far Infrared Interferometer) is a concept for a spatial and spectral interferometer with an operating wavelength range 25-300 μm and sub-arcsecond angular resolution, and is based in the combination of two well-known techniques, Stellar Interferometry and Fourier Transform Spectroscopy to achieve high spectral and spatial resolution in the Far Infrared. The resulting technique is called Double Fourier Spatio-Spectral Interferometry1 (Mariotti and Ridgway 1988). With increased spatial and spectral resolution a number of interesting science cases such as the formation and evolution of AGN and the characterization of gas, ice and dust in disks undergoing planetary formation, among others, can be investigated. Here the current status of the design of the FIRI system via an instrument simulator is presented, as well as the results of a test-bed implementation.
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机译：FIRI（远红外干涉仪）是一种空间和光谱干涉仪的概念，其工作波长范围为25-300μm，具有亚秒级角分辨率，并且基于两种著名技术（恒星干涉法和傅里叶变换光谱法）的结合在远红外中实现高光谱和空间分辨率。由此产生的技术被称为双傅立叶空间光谱干涉法（Mariotti and Ridgway 1988）。随着空间和光谱分辨率的提高，可以研究许多有趣的科学案例，例如AGN的形成和演化以及正在经历行星形成的磁盘中气体，冰和尘埃的特征，等等。这里介绍了通过仪器模拟器进行的FIRI系统设计的当前状态，以及测试平台实施的结果。
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