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Dilshan
I have an EAF on my ED80, ED120 and SCT. It takes all but 5mins to install correctly.
The coupling (silver springy thing) that come with the EAF dose not go inside the housing of the focuser. So saying that the ED80 focuser shaft only goes half way into the coupling and the coupling does not touch the housing.
On the EAF side, you will find a flat spot on the shaft. Make sure one of the the grub screws sits flush onto the flat part of the shaft. This will prevent any slipping on the EAF side.
If the tube is slipping out you may have touched/loosen the wrong grub screws when mounting the bracket onto the focuser. If this the case you need to set the right tension of the focuser shaft to the tube to prevent slipping, but not too tight to place unnecessary load that can damage the tube or shaft.
Notes;
Make sure you are not attaching the EAF to the dual focuser side.
Make sure you have the right coupling, there should be 4 of them.
Make sure to load the coupling. This will reduce the amount of backlash
Thanks
Wayne
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