The AOST miniature Fourier spectrometer for space studies

International audienceThe AOST Fourier spectrometer being developed for the Phobos-Soil project is intended for remote probing in the 2.5-25-μm region. This spectral region includes not only reflected and transmitted solar radiation, but also the intrinsic thermal radiation of the celestial body being studied. The maximum spectral resolution, taking into account apodization, is 0.9cm-1, and the field-of-view angle is 2.5°. The device has its own thermal-stabilization and two-axis guidance systems, as well as an absolute-blackbody simulator for calibration. The time to record one interferogram ranges from 5to50sec. The mass of the device is 4kg, and its power requirement is as much as 10