Adjusting Skywatcher Equinox focuser tension
Monday, 1 July 2013 | Steve
All good Crayford focusers (at least those expected to carry any weight) have tension adjustment screws. It is just a matter of locating and applying them.
The focusers fitted to Skywatcher Equinox telescopes are a good example. Tension is adjusted via a single central hex screw using a 2.5mm hex key. Simply run the focuser in-out while gently turning the key clockwise, it only needs a fraction of a turn.
A heavy setup like a DSLR camera or CCD camera with filter wheel will require stiffer focuser tension than a regular diagonal and eyepiece.
A little experimentation will soon find the optimum setting.
Hope that helps :-)