use a fresnel in the alpha, or make a cheap one by taking the dot product of a Camera Vector and a constant 3 vector of 0, 0, 1
or if it;s all emssive and not using the opacity slot multiply everything by that setup.
edit: you might need to run the dot product through a abs also.
if you dont quite under stand i could post a material network
Last edited by passerby; 08-11-2012 at 11:14 AM..