, Volume 93, Issue 1-6, pp 215-227

High precision fourier transform spectrometry: The critical role of phase corrections

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Abstract

In high precision Fourier transform spectrometry, proper handling of the phase correction is essential if the full potential wave number accuracy of the data is to be preserved. One-sided interferograms are shown to be especially sensitive to phase error, and this sensitivity is quantitatively related to the signal-to-noise ratio. The role of the truncation/apodization function used to obtain the phase correction is also discussed, as is the special problem of emission spectra.

National Solar Observatory, NOAO, operated by the Association of Universities for Research in Astronomy, Inc., under contract with the National Science Foundation