The SOHO LASCO C3 camera shows an 8 degree radius around the Sun.
At 1pm AEDT today ISON will be 7.9 degrees from the Sun so it should be visible in this camera.
http://sohowww.nascom.nasa.gov/data/realtime/c3/512/
At 5pm AEDT today Wed ISON will be 7.4 deg from the Sun.
On the 29th Nov at 5:38 am AEDT ISON will be 0.5 deg from the Sun, its closest approach.
See also
http://sohowww.nascom.nasa.gov/data/realtime/c2/512/