Focus knob for C8-C9.25-C11

This focus knob fits Celestron C8, C9.25 and C11 telescopes. You just have to push it on your regular focus knob to hold it in place. Can be removed as simply as you install it.
This knob gives you a high focusing precision, create a demultiplication for better accuracy and softness. You can use it with one finger to avoid vibrations on optical tube.
For those who don’t want to invest in high pricing solutions, this is the perfect tool !
You can choose your color on order !!!

Printed on CC BY 4.0 licence.