Here's a starfield I just used. I shoudda increased the number of stars....
background{rgb 0}
#declare RRR=seed(123);
#declare n=0;
#while(n<3000)
sphere{500000*<
sgn(rand(RRR)-0.5)*(0.15+rand(RRR)),
sgn(rand(RRR)-.5)*(0.15+rand(RRR))+.5,
sgn(rand(RRR)-0.5)*(0.15+rand(RRR))>
,1000 pigment{rgb 1} finish{diffuse 0 ambient 1}}
#declare n=n+1;
#end