Description
Unipolar stepper motor 12V with built-in 1:10 reduction gearbox that gives resolution 480 steps per revolution that correspond to about 4 micrometers per step at standard Crayford focuser with 1:10 reduction gearbox. The motor is designed to rotate the microfocuser shaft in telescopes with a focal ratio of f/3 or slower. The motor is equipped with RJ 6 pin socket and the cable ended with a DB9 or RJ plug. This is compatible with the Robofocus standard, which can be powered by many different controllers – AstroLink, AstroHub, Moonlite, USB Focus, and many others. Motor torque is enough to work with the medium, large, and very large Crayford focusers and R&P focusers (up to 4″) with a load up to 7-8kg.
To rotate the main focuser shaft motor with 1:120 reduction should be used.
Technical data:
- voltage – 12V DC
- current – 0.4A
- resolution – 480 steps per revolution
- step size – about 4 micrometers for standard Crayford focuser with 1:10 microfocuser
- torque – 20 Ncm
- maximum speed – 250 steps/s
- electrical connection – male D-Sub 9 pin socket, Robofocus compatible
You can read more about focuser motor solutions at https://astrojolo.com/astrolink-4-0-mini/focusing-stepper-motor-solutions/
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