the maximum exposure on my canon is 30s which would be ok for a short ISS trail but you need the cable for longer plus the camera wont wobble with the camer - sorry about the FOV question Nut forgot to answer - but if you use the 18-55mm lens - it would have to be set on 18

Like I said its all trial and error so dont be upset if it doesn't work first time - it rarely - does - has anyone played the movie on the link I posted - that blew me away _ i've seen detail on the ISS but that was awesome - just waiting for the next ISS/shuttle merge that would be a good photo to take