This simulated image is made with single exposures of 10938 seconds (net of bad ramps) using the stars of the ACS Deep Field in 47 Tuc. The field is rotated by 10 degrees between the exposures and the median flux is determined in each pixel

The red band is F322W2 (322W2detector.fits), the green is F200W and the blue is 150W2detector.fits.