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Paper: The Herschel/SPIRE Spectrometer Phase Correction Data Processing Tasks
Volume: 495, Astronomical Data Analysis Software and Systems XXIV (ADASS XXIV)
Page: 343
Authors: Fulton, T.; Naylor, D.; Polehampton, E.; Hopwood, R.; Valtchanov, I.; Lu, N.; Marchili, N.; Zaretski, J.
Abstract: Asymmetries in the recorded interferograms of Fourier Transform Spectrometers (FTS) can be caused by optical, electronic, and sampling effects. Left uncorrected, these asymmetries will result in a spectrum with both real and imaginary components and thus a non-zero phase. One or more phase correction steps are applied in FTS data processing pipelines to correct for these effects. In this paper we describe the causes of non-zero phase particular to the Herschel/SPIRE FTS and present the two phase correction processing steps employed. The evolution of the phase correction algorithms is also described.
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