I don't know if there is a way as of yet, but for compositing with other images or footage, it would be nice to get a more base render.

Oh gosh, sun shafts, I am dense. 

Ah, I know now, I mean the light flares. I was looking at a moonlit night, where the effect isn't as intrusive. I guess it would be nice to not have the moon and sun show, yet still light the scene with them.