We can't move it back any further, we have moved it all the way back to the back row of lighting. We have tried the focus nob on the bottom of the light. It makes it clearer, but not all the way. We have it in the audience already. My guess would be about 40 feet back.
I am from a small high school and we recently had two GOBO's made for the wizard of oz. We got a full color high-definition gobo made of the emerald city. We have an etc source 4 jr. light (beam width 50degrees, gobo size M). We have it placed in a way so that the gobo fills the entire stage but...