Power spectra of Field 1 Cut 1 at different steps of the data cleaning. The top spectrum is that of the initial JWST image with the stars, their spikes, and galaxies. The bottom is that of the image at the end of cleaning. The dashed lines show the spectra of the maps of stars, spikes, and galaxies subtracted from the JWST image. The wavenumber is expressed in units of pix ${}_{\text{JWST}}^{-1}$ on the bottom axis and au on the top axis.