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The focuser has a female M42 thread on the telescope side and a male M42 thread at the eye piece/camera end. The focus travel is approximately 15mm in 3 full turns. There are 1mm increment marks on the focus ring. The sliding core and…
My design was inspired by a radio telescope I saw that was made out of an umbrella style photographers light reflector. It was less than 1m in diameter and the EMF fabric was stuck on the inside. I thought it would be much neater (and a…
The model is made from 4 parts. The thumbscrew should be screwed onto the middle part with the raised flange facing towards the foot. The foot, middle and dovetail should then be carefully glued together. The model include location tags…
This project allows an electronic focuser to be added to suitable Astro Essentials crayford focusers. The 3D printed parts consist of the housing/mount for a stepper motor and the 4Tronix stepper motor driver board. The 4Tronix Focus RFU…
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