I have a custom particle feeding a static starfield 1 preset (physics time factor is keyframed to 0) creating a statice background. I would like to rotate this "particle field" slowly in the background. Is this possible? What parameters in the Particular would create this effect?
Animate a camera flying around. Do this in a pre-comp and use this pre-comp as a normal 2D layer in your main comp. You cannot rotate the emitter or something as it would only affect particles not yet being born (a PTF of 0 does stop everything, so no particles will be born anymore).