The next thing you need is something that will trigger the shutter remotely. This eliminates your moving the camera while the shutter and mirror are doing their thing.
http://www.bhphotovideo.com/c/product/76…
But you seriously need to get a scope and mount that matches the performance of the camera. That 60mm isn't going to cut it for you. Chances are it doesn't have a decent tracking system, let alone a equatorial mount. Then you need to have a really good dual speed focuser. The mount is actually more important than the scope and camera. It's the device that holds everything in place without vibration, provides rock solid stability, and precise tracking. If the mount doesn't provide that, you are going to be wasting your time, effort and money. Been there, done that and now I'm passing that along to you for free.
Something like this will just get in the door -
http://www.telescope.com/Astrophotograph…
Now, read up on how its done -
http://www.astropix.com/BGDA/BGDA.HTM
Plan on dropping around $2,000 minimum for a decent working system.
Now, if you just want to fool around and see what you can do with what you have. Use a modified webcam to get planetary and lunar pictures -
http://www.astro.shoregalaxy.com/webcam_…
This way, your not wearing out the Nikon's mechanics while getting the process down. Webcams also let you record a stream of video which later you can pick out the best frames and with software come up with a decent looking picture.
http://www.astronomie.be/registax/
Decent astrophotography is about 100x more complex than visual observing. It takes decent equipment, money, time and patience. And there are very few shortcuts.