Caution
Collimation Bolts
The primary mirror assembly (including the mirror cell, mirror, baffle tube, and corrector
lenses) is held in place by the primary mirror collimation screws on the telescope back
plate. Do not loosen these screws too much or the whole assembly will fall off (this is a
bad thing), or more likely one screw will pop loose and you will have to take off the back
plate to reattach it. When collimating the telescope, make only small adjustments as the
telescope was collimated before shipping and should require only a little tweaking.
Same goes for the secondary assembly. It is held in place by its collimation screws.
Again, don’t loosen these too much or the assembly can become detached (another bad
thing). Make only small adjustments to the collimation screws. More details are in the
section on collimation.