FOC Instrument Science Report 069 2/93 The Image Shifts due to the FOC Polarizers by P.E. Hodge Abstract excerpted from the report: Observations of NGC 5272 were made with the polarizing filters to determine the shifts that those filters introduce. The POL0 and POL120 images are nearly in the same position, but POL60 is shifted about three pixels to the left and two pixels down relative to the other filters.
