Best setting for night panning for a Nikon D90?

I have tackled panning during the day and would really like to try night panning but just can't quite figure it out. I've got everything down I just can't seem to get my subject in complete focus. I have my ISO at 600 and f/1.3. Any help or ideas is very much appreciated!

Added (1). Ok just to clarify, I know how to take a night shot, i'm looking to perfect my night time panning shot. When you pan, your subject must be in complete focus with the background streaked. Here is an example:

Night panning can be done with your camera set at 200 ISO and with the camera set in the aperture priority mode and the aperture set to about f/5.6 or f/11, press the shutter release and move the camera all you want to produce streams of light. You can even move the zoom lenses to create other interesting images.

When you say you can't get your subject into complete focus, that tells me you are trying to use a technique that is NOT used when attempting to produce sharp focus of a subject, especially at night.

Here is a sample of a night shot.

Had I panned, the whole image would have smeared across the frame.

What purpose do you have in mind for "panning" at night?

Maybe if you told us that, we could come up with a usable solution

Yes not all that sharp but close. How about a rear curtain flash to add more direct light on the subject just as the shutter is closing?

Based on the link you provided, you can do that just like you did during daytime.

Set your camera to Auto ISO (the D90 is excellent in this aspect). Use shutter priority (S) and set the same shutter speed(where you are used to) that you used during daytime.

I'm thinking that at f/1.3, there isn't enough depth of field for a good margin of error. A lot of it will be blurred with your camera movements already. I suggest stopping down to f/5.6 to give you a better depth of field.

In addition, i also suggest not letting hte shutter go for too long (i think you know this, but i'm going to say it anyways). The longer the pan shot. The more difficult it is. Try to keep the pan short and sweet.

Pan shots at night is more difficult because you have less light to work with. Practice makes perfect.