Astro Tracker with Planetary Gearbox

Here is my first upload onto thingyverse...

My printer is an Ender-5.

I always wanted to take images of the night sky and never really liked the "Barn Door" style DIY trackers, I am sure that they work but they are not for me... This leaves me to buy something or create my own, and here is my design. I wanted something 3D printable and smooth, I was always amused by the print in place planetary gear sets and gained some inspiration from them (thing 53451). So I started with Math and trying top figure out a reasonable working motor speed...



The Math:

Earth revolves one time per day, so my output shaft in RPM needs to be:
1RPD=1/24hrs*60min) = 0.000694... RPM

Wow that is tiny... So I'll need to gear this thing way down. I can do a 5:1 reduction with a planetary design and I figure that I'll need to stack 6 of them to get the input reasonable.

5x5x5x5x5x5= 15,625:1 gear ratio. OK, Wow again...

So the final math for the motor input is:
(1/(24*60))(5x5x5x5x