If you are viewing the image on a SUN or other high-contrast monitor, I suggest that you browse tiff images using xview with a gamma setting of 2. Macs should have no trouble. Note that the orientation of the spacecraft, and hence that of the pictures above, is arbitrary. WFPC2 images of NGC 7662 have been color coded to indicate their internal motions. The original ground-based doppler image is shown as an inset.
North is up and east is to the right.
The Halpha image is fascinating. The bright ellipse covers the inner halfof the object. Its upper left region is blue shifted, and the lower right part is redshifted. The football is tilted by about 45 degress to the line of sight, the upper left tip is approaching us, the lower right end is receding. The nebular edge mimicks the shape of the football in its center.