Mr Felix try doing a search on the rule of 600 for doing star shots. It works really well and have done it many times myself. It does require knowing where infinity is on yourbut you can work that out easily enough even with the kit .
- Setwide open
- to 2000 to 4000
- To calc thetake the focal length then calculate 600 / focal length
- Focus to infinity
- Ensure you've got mirror lock up on and are either using timer or arelease