I have spent the last almost 48 hours intensively trying everything, and I either get strange trippy artefacts (which are quite fun to play with) or off center views, even when getting the wierd artefacts it's still off centered. It's the only thing that seems constant. I feel comfortable in saying that I've tried almost 500 different combinations to get this working and had no luck. I have literally ran out of various things to try leading me to the conclusion that it is infact a rendering bug

See the image attached (minus the normalize node I was experimenting), it creates the desired effect however the view is off-centered

http://i.imgur.com/FYNm9XQ.jpg