1. Don Gavel: Keck NGAO meeting April 25, 2007 1 Keck NGAO Project Replan: AO and Laser Systems Donald Gavel NGAO Team Meeting 6 April 25, 2007

2. Don Gavel: Keck NGAO meeting April 25, 2007 2 AO and Laser Systems Project Replan: Outline of Presentation Program plan overviewProgram plan overview Purpose and approach of the replanPurpose and approach of the replan Key changes highlightedKey changes highlighted Feedback from the team on schedule & level of effortFeedback from the team on schedule & level of effort

3. Don Gavel: Keck NGAO meeting April 25, 2007 3 AO and Laser System Program Overview AO and Laser System Design phase follows the system engineering / trade studies phaseAO and Laser System Design phase follows the system engineering / trade studies phase Inputs: Architecture Definitions, Study results, FRDs v.1Inputs: Architecture Definitions, Study results, FRDs v.1 (June/July time frame) Outputs: Contributions to System Design Manual & FRDs v.2Outputs: Contributions to System Design Manual & FRDs v.2 (= Conceptual Design or Proposal level => raising funding to build)

4. Don Gavel: Keck NGAO meeting April 25, 2007 4 Purpose and Approach of the Replan Problem: present plan is behind schedule.Problem: present plan is behind schedule. Approach: given currrent status and lessons learned, adapt the plan to achieve key goals using the resources availableApproach: given currrent status and lessons learned, adapt the plan to achieve key goals using the resources available Play to people and institutional strengthsPlay to people and institutional strengths Streamline the work – fewer people at higher percentageStreamline the work – fewer people at higher percentage Level the plan and tie to people availabilityLevel the plan and tie to people availability

5. Don Gavel: Keck NGAO meeting April 25, 2007 5 Overview of changes in 3.2, 3.3 WBS 3.2 AO System.WBS 3.2 AO System. Reshuffling of personnel on four tasks.Reshuffling of personnel on four tasks. Two new tasks:Two new tasks: atmospheric profileratmospheric profiler d-IFU & LOWFS AO & Object Selection (broken out from WBS 3.5)d-IFU & LOWFS AO & Object Selection (broken out from WBS 3.5) WBS 3.3 Laser Facility. Reshuffling of personnel on three tasks.WBS 3.3 Laser Facility. Reshuffling of personnel on three tasks.

6. Don Gavel: Keck NGAO meeting April 25, 2007 6 Changes to 3.2, 3.3 WBS Current hours New hours Change justification 3.2.2 AO Enclosure 10040 Enclosure is straightforward engineering. Emissivity vs temperature is covered elsewhere in plan 3.2.3.6.2 Deformable Mirror 14060 DM specification doesn’t require much design work. Neyman & Bauman instead of Flicker, Dekany, Bauman 3.2.3.10 Atmospheric Profiler -80 Will likely need profiler for tomography. Matt Britton lead 3.2.3.11 D-IFU & LOWFS Object Selection -320 Need to explore a number of wide field MOAO pickoff mechanisms. Anna Moore lead 3.3.3 Laser 10020 Leverage CfAO work in this area. Gavel lead

7. Don Gavel: Keck NGAO meeting April 25, 2007 7 Program Plan Changes – 3.2 Details

8. Don Gavel: Keck NGAO meeting April 25, 2007 8 Program Plan Changes – 3.3 Details

9. Don Gavel: Keck NGAO meeting April 25, 2007 9 Team Feedback WBS definitions correct and unambiguousWBS definitions correct and unambiguous Objectives feasible in the time allocatedObjectives feasible in the time allocated Availability, time commitmentAvailability, time commitment