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"It utilizes 0.9 degree per step bipolar stepper motors to get high resolution"
This is different to saying the motor moves the scope .9 degrees per step.
The .9 degrees must be the step size of the motor. This is a standard 400 step per rev stepper.
360 degrees = 1296000 seconds
1296000 seconds / 360 teeth / 400 steps per rev = 9 arc secs per rev of motor.
Microstep this by 64 and we get .14 arc sec per step...
Could even use less and Microstep by 16 = .6 arc secs per step - have use Bartels drive at this level with no problems...
Gary
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