Is the difference between this and a normal telescope that it has a wider field of view for the same level of detail? So you could do the same thing more slowly by taking hundreds of pictures in different directions with a normal telescope?
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).
It can be compared to the neighboring Gemini South telescope which is similar size but has 3ft secondary and f16 focal length.