MR_light self illumination tutorial needed

[xeunox]

Hi everyone

 

i was hoping one you you guys could point me in the right direction. I have to create a light like the one attached. I have tried it in the past but never got it to work quite right. This specific light is a roof fitting containing 2 parts. a center piece providing the soft light, and drop down crystals surrounding the light. I have modeled the light already and i'm now playing around with the self illumination texturing but i'm not getting it to work correctly, i am using mr_exposure on a EV value of 7 for interior lighting just to test. i have added a photometric cylinder light to provide light in the demo room i contructed.

 

any assistance would be helpful