The fringes produced in the classical Michelson pupil plane interferometer may be processed to produce both spatial and spectral information. Observational techniques developed for Fourier transform spectroscopy may be readily adapted to this observing mode. The authors have tested this observing technique at two telescopes with several instrumental configurations, and find that it holds excellent promise for operation at all spectral resolutions from very low to very high, and may be ideally suited for multiple telescope interferometry. They present here a description of the method, and describe initial results.
Interferometric Imaging in Astronomy
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