1. f/8 Repair and recommissioning status and near term forward look Ron Probst, Roberto Tighe 06 Nov 2012

2. Personnel (La Serena) Optics: Roberto Tighe, Daniel Hauck Mechanical: Andres Montané, Patricio Schurter Electronics: Manuel Martinez Software: Rolando Cantarutti, Omar Estay Project manager: Tim Abbott Scientist: Ron Probst

3. Personnel (Tucson) Optical fabrication and testing: Gary Poczulp Mechanical: Joe De Vries Project management: Jay Elias

4. Mirror Status Regular updates from Jay Elias Optical tests of damaged mirror – Some astigmatism, original Repair plan – Excavate damaged area – Glue in bowl-shaped plug Preparing for work with generating machine – Handling and fixturing for secondary

5. Mechanical status Finish evaluation of damage to cell – Delayed by lack of shop personnel Replace focus and tilt mechanism – Driven in part by prior issues with f/8 – Replace motors, encoders, drive screw assemblies Interface with DECam – Need to slot baffle in 4 places – Potential for weight reduction

6. Control electronics status Replacement for old SMC box – Project prior to accident – Electronically assembled – Minor changes to use new encoder Requirements definition, parts selection – Operating mode drives encoder resolution, electronic and mechanical complexity – COTS solutions highly desirable for cost and schedule if performance is acceptable

7. Software Motor control: Martinez TCS interface: Estay, Cantarutti Architecture exists but not used prior to accident

8. Optical recommissioning Installation and alignment procedures defined Requirements defined Equipment and fixtures ready

9. Near term forward look Define positioning accuracy requirements Develop plan and schedule – This week: further one-on-one consultas – Next week: group meeting to develop plan Strong desire by top management to have f/8 available for 2013 B semester.