NGC 2244 "Rosette"

I modified the focuser.
Instead of a bunch of clamps, tubes, and brackets—just one 3D-printed part and a string (strings are everything!).
I had to use a motor without a housing because with the housing, neither the motor itself nor the smaller gear (30 teeth instead of 38) would reach the lens.
It turns confidently, backlash is definitely less than 10 steps (ASIA doesn't allow less).
I took it out in the cold (-15 to -17°C) and tested it on the sky.
FWHM decreased from 7 to 5, but the coma didn't go away. I can also tighten the stars a bit more, and the coma will be less noticeable.
This version is a stack of all test frames from 2 nights, with stars taken from 4 frames.