Telescope Overview
Back Plate Features
Located on the Hyperion’s back plate are the primary mirror collimation screws,
Telescope Control Panel, instrument rotator, focuser, and cooling fans.
There are six collimation screws—three adjustment and three lock screws. Recall that
the large screws are the only thing holding the primary mirror assembly. Use caution
when adjusting these screws. The screws are described in more detail in the section on
collimation.