If you want to use the telescope to shoot celestial bodies, you would need a T-mount. Since you want to shoot the Milky Way, I hope you are in a place where you have very little light pollution. Anyway, get yourself a wide angle lens (avoid fish eye). Manually focus and set it to infinity. Use a remote trigger or a self timer to avoid shake. Oh, set the ISO around 400 and 15 to 30 seconds exposure would be good enough.
Happy clicking and share the images