What kind of shutter speed are you using to keep the stars in place rather than having them form trails across the photo?
Thanks to cameras with great high ISO performance, you can get a static shot of the stars in under 30 seconds. And that's really only happened in about the last three or four years. When I first got into this, everyone was doing star trails, but it was mostly because they couldn't get their camera's ISO up high enough. Now, because of these insanely high ISOs, people are getting cleaner 30-second shots that freeze the position of the stars.