This is a great time of year to find clear skies to photograph the stars. Start out with a sturdy tripod. Set your camera’s ISO to a low number for better image quality. Try taking your lens off autofocus and set the focus ring manually to infinity. Make sure there are no lights around that your long exposure will pick up. See what the camera meter exposure gives you by checking your histogram. If it is way off, use your +/- exposure over ride or use manual settings to correct for exposure. If you want longer exposures than 30″ seconds, use a cable release. Put your lens shade on when you shoot this to help out.