The other difference is partly a consequence of the wide field of view. That thing has a huge front lens, which lets in a massive amount of light, so the bright

The other difference is partly a consequence of the wide field of view. That thing has a huge front lens, which lets in a massive amount of light, so the brightness of the projected image on the sensor is much higher than a telescope that has a zoomed-in field of view. That means it is able to use a relatively short exposure and still see things in the sky that are fairly dim. To use numbers to compare to any other camera, it has a 3.2 gigapixel sensor with a diameter of 640mm, and the "lens" (actually several mirrors) has a focal length of about 10m and a diameter of about 8m, giving it an f-ratio of f/1.2, which is very impressive (although the central part of the "lens" is obstructed, giving it a light-collecting ability more like an f/1.5 lens).