All my Astronomy mods and stuffs. All this blog is protected by the Attribution Non-Commercial Share Alike Creative Commons License. See creativecommons.org for more details.
Introduction :
Yet another ETX70 tweak. If you need to store some focus positions on your ETX70, just do this small modifications. Print a scale on a paper sheet, and stick it on your tube. It couldn't be eayser !
Results :
Best regards !