Image (top left), models (middle), and residuals (right) for Mrk 142. The upper panels display the "simple" models and their residuals, and the bottom panels display the "optimal" models and their residuals. The scale of the black bar in the top left panel is 10 arcsec and the compass in the bottom corner of the panel shows the directions north and east. The galaxy image and models are displayed with an inverted logarithmic stretch, and the residuals are displayed with an inverted linear stretch centered around zero counts. The bottom left panel shows the one-dimensional surface brightness of the galaxy (data points), the best-fit model (solid line), and each of the individual best-fit model components (PSF = dotted line, all others = dashed lines), with the ellipticity of the galaxy displayed below.