1. Optical Support Structure Subsystem (OSS) Overview

2. OSS Components (left and right) Mirror Cover Swing Arm Mirror Cover Prime Focus Swing Arm M2 Swing Arm M2 Hexapod M3 Swing Arm M3 Mirror (combined left & right) Dynamic Balancing (?)

3. OSS Block Diagram OSS Subsystem (non-sided) MCSPU UMAC (left & right) Swing Arms (left & right) M3 UMAC (left & right) Mirror Cover (left & right) M2 Hexapod (left & right) Swing Arms (left & right) Mirror Cover (left & right) M3 Mirror (left) UMAC (left & right) M3 Mirror (right) UMAC Dynamic Balancing UMAC (left & right)M2 UMAC (left & right) Swing Arms (left & right) Mirror Cover (left & right) M2 Hexapod (left & right) Swing Arms (left & right) Mirror Cover (left & right) M3 UMAC (left & right)

4. M2 Hexapod State Diagram STANDBYOFFONLINE IN LIMITERRORMOVING Toggle Switch Init Deinit, Close Brake Home, Init Move Stop Init Deinit, Close Brake Toggle Switch Automatic

5. OSS GUI Screenshot (left)

6. M2 Hexapod GUI Display 3 Displays: Kinematic Axes Spherical Axes Physical Hexapod Legs Brake Status (engaged | disengaged) Comm Link (connected | disconnected) Homed Status (yes | no)

7. Hexapod Kinematic Axes Show position of kinematic axes X, Y, Z, Alpha, Beta and Gamma. Positions are updated from reflective memory every half second. Allow moves to be made in any or all axes. No status is reported.

8. Hexapod Movement-On-A- Sphere Shows Angle X and Angle Y. Both angles are calculated by the OSS subsystem and updated every half second. Allows moves to be made in either or both axes. No status is available

9. Hexapod Physical Legs Passive display showing information about each physical leg. Performing moves in the other hexapod displays will cause this display to change as well. State/Error box displays state and error for each leg