A control system for BETTII: enabling far-infrared, balloon-borne Fourier transform spectroscopy
Imaging and Applied Optics (2013), paper FM2D.4(2013)
摘要
BETTII, a balloon-borne double-Fourier interferometer, requires precise control of the relative phase and angle between the beams to enable Fourier transform spectroscopy. The control system and its challenges are presented.
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