Comparison of the open cluster IC 348 observed with WISE W3 at 12 μm (left), W4 at 22 μm (center), and Spitzer at MIPS1 24 μm (right), on a 20 arcmin field of view. Notice that the morphology of the extended emission is different between the 12 μm (W3) and 22 μm (W4) images. On the other hand, the 22 μm and 24 μm (MIPS1) data look quite similar overall, except that the difference in sensitivity and angular resolution makes the 24 μm image look sharper and makes it possible to detect fainter point sources.