WISE four-color mosaic of HB 3 at 3.4 (in blue), 4.6 (in green), 12 (in orange), and 22 μm (in red). The 4.6 μm image is dominated by molecular hydrogen and highlights interacting regions between the SNR and molecular clouds. The image is centered on R.A. 2^h17^m22.6ˢ and decl. + 62° 37﹩{}^{{\prime} }39\buildrel{\prime\prime}\over{.} 9﹩ (J2000) with a field of view (FOV) of 103′ × 120′. The exact coordinates of the same images are given in Figure 5.