A red, green, and blue (RGB) image of overlapping galaxy pair VV 191. Red and green are the NIRCam F150W and F090W filters, respectively. Blue is the HST F606W filter. The galaxy pair consists of a foreground spiral Sc galaxy, VV 191b, and a smooth background elliptical galaxy, VV 191a. The redshifts for the foreground and background galaxies are z = 0.0514 and z = 0.0513, respectively. The area of overlap shown in Figures 3–5 is overlaid in white. Small regions of high S/N, A, B, and C (see Section 5.3), are overlaid and labeled in red, blue, and green, respectively. In addition, the best background elliptical model is overlaid in dotted gray to display the extent of the background elliptical galaxy.