The resolution of an image is the smallest detail that can be resolved. If the image is digital, this is the size of an object represented by one pixel, so that if an object 1m 2 is represented by 1 pixel, the image resolution is 1m. The image of Jupiter below is 260 pixels across by 251 pixels high.
Jupiter on the above image is 9 cm across or
pixels. Jupiter is 139, 822 km across, so the distance represented by 1 pixel on the image above is
km, so any distance smaller than 611 km cannot be resolved.
Jupiter on the image above is 8.7 cm high or
pixels. The polar diameter of Jupiter is 134,708 km so the distance represented by 1 pixel on the image is
km and is the smallest vertical distance than can be resolved.
The smallest area that can be resolved is 611*593=362323 km 2 .