Images and radial profiles of the AGB envelopes. Each row shows from left to right: the image in grayscale; a close-up contour map of the envelope, with field stars removed and their cores masked; and the radial profile of the envelope with the PSF. The field size is indicated in the images. The filters and contours, specified by the lowest contour (and contour interval) in units of the peak surface brightness of the envelope, are as follows (from top to bottom): IRAS 01037+1219, V-band, contours 0.33 (0.43); IRAS 07454−7112, B-band, contours 0.31 (0.23); IRAS 09116−2439, B-band, contours 0.28 (0.26); IRAS 09452+1330, V-band, contours 0.32 (0.16). The images are square, with north to the top and east to the left.