Messages

I had the same problem until I remembered the M is a touch screen.   I think this is the question of how to get into the "Q" to change the settings within a ML feature???

Tracking mount - sorry forgot.

One of those fancy dancy mounts that track the stars the the $$ telescopes have. 

If you get way into it......

So I have done 3 of these each learning 100% each time.

600/focal length = approx shutter max before trails. (unless you have a tracking mount - more on that later)
ISO 1600 is likely the minimum
Shoot RAW stills
Use the ML Intervalometer
I used my 17-55 2.8

Simple solution is to use Canon DPP to convert to JPG in batch and the combine with your favorite Post software (my first 2 I did w MS movie maker didn't look too bad)

noise reduction is going to be the challenge.

I have yet to do a night of star shots without at least one unseen meteor streaking through a frame - kind of cool