My second part refers to "Also, for the pattern geometry texture, you are plugging in a gradient ramp into the base aniso, but then the amount given for the Anisotropy in the Corona physical material (Material #37 & 25)= 0. In my mind this should mean that there is no anisotropy. "
It doesn't matter if aniso is zero, since it has a mapped plugged in, which means the zero in the material parameters is ignored and values come from the map instead.
As to how it could be generated as a texture, I am leaving that to Aram to explain as I am not sure what he had in mind :)