Next: Image Restoration Up: Comparisons Between Observed and Previous: Introduction . ... Observed with PC6, F555W, on 11 April 1991. This is a 256 256 subimage centered at pixel (253,638) in the original 800 800 pixel frame. ... The Library PSFs, Image PSFs, and Tiny TIM PSFs are used for image restoration in this experiment. ... The available PSFs include one for F547M centered at position (337,328) and three for F555W centered at positions (138,525), (338,527), and (336,728). ...