You want to record 30fps and playback 30 fps? The stars are not very interesting in real time video. Most star videos are done as a timelapse.
Possible starting settings with the 18-55 kit lens: 18mm, manual mode, f4.0, 30 second shutter, ISO 1600, 2 megapixel JPG, set the intervalometer to take a photo every 32 seconds. Let that run for ~300 shots.
Then use your existing movie software or
Startrails application to merge the JPGs into an AVI. 300 shots played at 30 fps will yield 10 seconds of video.
Startrails also has the option to stack all the JPGs into one image, like