Even perfectly aligned true polar mounts always have a small tracking error in scanning across the entire belt of satellites. This inaccuracy can be important when using large dishes with relatively narrow beamwidths, especially for Ku-band dishes that have one third the beamwidth of equal diameter C-band systems. If a satellite in the center of its sweep is accurately targeted, then those at the far ends will be slightly above the sight of the receiving antenna. If the end satellites are down the antenna boresight, the center one will be slightly below its main axis. This error can be controlled at less than 0.1 degrees with a well-adjusted, true polar mount. It is comparable with the 0.1 degrees "stationkeeping" motion of a satellite and is more than adequate for aligning C-band receive dishes. The aiming accuracy of a polar mount can be improved from 0.1 to less than 0.01 degrees even at end-of-arc satellites. The "modified" polar mount geometry is achieved by fine tuning the polar axis and declination offset angles. Once this is accomplished the pointing error achieved is less than the tolerances of the best available az-el mount mechanisms. Once the true polar angles have been correctly adjusted in a "true" polar mount, polar axis is then tilted slightly forward towards the arc of satellites. The declination offset angle is then reduced by an equal amount. A satellite due south from the receive site would be unaffected by this net zero change. The slight decrease in declination causes a dish to point higher than normally would be the case except when aimed directly south (or north). In effect, the most southerly satellite is targeted perfectly, while the antenna's main axis is aimed below the easterly or westerly spacecraft less than would normally occur with the conventional polar mount adjustments.