Proof of concept of PSF homogenisation for the JWST/MIRI instrument. The PSFs from the first column at 5.6 μm, 11.3 μm and 18.8 μm, respectively, are homogenised to the PSF on top of the second column at 25.5 μm, using pypher kernels. The resulting homogenised PSFs are shown in the second column. They are visually indistinguishable from the effective one on top. The relative residuals on the right confirm that the central part of the PSF is reconstructed at least to 0.1%.
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