Hello folks! hope all is well. Earlier today i was looking at a video where there was a telescope on top of some motor. this motor was controlled by a computer. when the user wanted the telescope to point to a certain star all the user had to do was to punch in the name of the star and the telescope automatically pointed itself at the star. now my question to you guys is.... a) During the prototyping stage of this electric motor is there a guy who sits there and literally calculates how much distance this motor turns for a certain amount of applied voltage? if yes then.... b) ....is it OK to assume that the circular distance traveled by the motor is a function of the voltage applied to it? c) Last question.......how the heck do they measure tiny rotations as a function of voltage during the prototyping of these kinds of devices? than you for your replies.