torsion
18-01-2014, 11:09 AM
Hi,
Would anyone know the distance the primary mirror travels per turn of the focus knob on the back of a Celestron Edge HD scope?
This would be the pitch of the focus screw, I would assume. Next step will be to take off the rubber nob and see if I can make the screw stick out to measure the pitch.
I am in the process of installing a motorised focusser and need to select a stepper motor. Just wondering if I can get a straight one or one with gears (few or lots).
Thanks in advanced.
cheers,
Bram
Would anyone know the distance the primary mirror travels per turn of the focus knob on the back of a Celestron Edge HD scope?
This would be the pitch of the focus screw, I would assume. Next step will be to take off the rubber nob and see if I can make the screw stick out to measure the pitch.
I am in the process of installing a motorised focusser and need to select a stepper motor. Just wondering if I can get a straight one or one with gears (few or lots).
Thanks in advanced.
cheers,
Bram