NIRCam, MIRI and HST maps in the filters where a faint extended emission in the H II region IC 434 is detected. Logarithmic scales are used in order to display both the bright illuminated filaments in the PDR and the faint extended emission in the H II region. The MIRI F770W and HST F110W maps are projected on the NIRCam grid. Image width: 132″ or 0.26 pc. The NIRCam F187N and F070W images illustrate the pattern of the four short-wavelength detectors in constrast the single detector used at long wavelengths that covers the same region. The MIRI F770W image illustrates the coverage of the MIRI imager, including the “extra” small, neighboring field due to the Lyot coronagraphic field-of-view. The black rectangle in the F335M map shows the region where the “background” brightness for the F070W, F090W, F187N, F405, and F110W filters is computed, and the white rectangle the region where it is computed for all other filters (see Sect. 5.2). The white line in the F770W image shows the typical length (~25″ or 0.05 pc) of the detected striated features attributed to the photoevaporative flow from the illuminated edge (see Sect. 4). The north and east directions are seen on the F070W image.