i just bought a hobby telescope, it works well for being nothing much than a toy, the very problem is that the gesrs that should keep it stable are all plastic and very hard to tighten while keeping it steady.
So I thought to let the gears wide open and move it with arduino: you point the object manually then with 4 buttons move it by small steps.
I've tried to use a couple of servos i had at home, mg90s 2kg 180°; while 180° is enough for the purpose, first i don't think 2kg is enough for the X axis motor, second one is not very precise (using the default library). I know I can achieve better results calibrating the pulse manually, but maybe is better if I use better motors.
What motors (and why) would you reccomand? Servo or stepper?
Being for a hobby the budget is low, so very max 50$?