When I collimate the XT12, the focuser is all the way in.

And yes if you move the focuser out you will see the Laser beam move out of the center ring on the primary.

Check to be sure the screws holing the focuser are tight.

The focuser on the XT's have some slop in them.

But the first thing I did was collimate the Laser collimator to be sure the beam of the Laser was not out of alignment.

To collimate the laser I purchased a collimating kit on ebay, link below.

I have a line scratched on the focuser and the 1.25" adapter, and also the Laser collimator.

I line all three lines up when using the Laser collimator to be sure it is always the same each time I use it.

I can post some links to replacement focuser's for the XT series, but they are not cheap.



Focusers for orion XT's.

Http://home.comcast.net/~wyorock/wyorock.html http://www.focuser.com/cgi-bin/dman....cgi&category=2 ScopeStuff