looks amazing! how did you find focusing on the night sky? because I can't see much I can never get a decent focus
The best way I've found is to pick a bright star and use 10x liveview to help you focus on it manually. It's well worth spending time trying to get the focus as precise as possible as it makes a big difference to how sharp the stars look in the final image.
If you're having trouble seeing it clearly on the camera, consider using a mobile app like DSLR Controller. With that you can view 10x liveview on your phone or tablet (bigger screen), and you can also step the focus motor in tiny increments without having to physically touch/bump the lens. Even with this approach it can be a little tricky to get right but with a bit of practice you should get the hang of it pretty quickly.
Finally, to get the sharpest stars you want to keep your shutter speed as fast as possible to prevent star trails due to the rotation of the Earth. The rule of thumb is 600 / (focal length) seconds on full frame or 600 / (focal length) / 1.6 seconds on a Canon crop camera.
