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. 2023 Apr 6;219(3):27. doi: 10.1007/s11214-023-00971-1

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© This is a U.S. Government work and not under copyright protection in the US; foreign copyright protection may apply 2023

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Fig. 17 — Plot of the time dependent phase for selected pixels, showing the evolution of the phase distortion versus time. The discontinuities occur when the interferometer thermal control was lost and reestablished. Phase observations using the calibration lamp signals and covering all relevant areas of the imaging detector are the basis for the phase distortion calibration used to straighten the fringes in the operational data analysis (see details in the text)