Fig. 6
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MIRI imager PSF based on pixel ramp slope fits (20 frames versus full ramp). 1D Voigt profiles are fitted to the two PSFs, and the FWHM is estimated based on where the fitted profiles have a signal value equal to half of the peak. The MIRI BFE results in a change in the widths of the PSF of 25% in the case where the full ramp is used for the slope fitting.
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