1. Cornell Caltech Atacama Telescope (CCAT) Status & Technical Exchange Meeting 16 March 2005

2. Status and Tech Exchange Agenda WBS Organized Updates and Technical Discussions 1.Facility and Site 2.Enclosure Dome 3.Primary Mirror System 4.Secondary and Tertiary Mirror Systems 5.Telescope Mount 6.Optical Assemblies 7.Electronics 8.Computers and Software 9.System Engineering 10.Integration & Assembly 11.Science Instrumentation 12.Management & Reporting

3. Site Evaluation Routine (weekly) weather station data downloads Surplus satphone purchased from eBayMarch 1 Satphone email problem reproduced, being debugged PV system recovered from Cerro TocoMarch 8 PV components anticipated soon in San Pedro Supplies shipped from Cornell to CBI March 9 CCAT-CBI (Cornell-Caltech) subcontract negotiations Chilean Army helicopter team visits CBI March 13 Six trips, 200 kg cargo per trip, plus personnel trips Six trips, 200 kg cargo per trip, plus personnel trips Three days, 2 hours each morning (cool air for flights) Three days, 2 hours each morning (cool air for flights) Need to clarify Cornell / Caltech insurance coverage Need to clarify Cornell / Caltech insurance coverage Cerro Negro deployment mid April

5. 1.0 Facility and Site Documentation Prepared for Site Development and Facility Design Concept Study…Award In Late March Anticipate Sole Source Award of $50k to M3, Tucson Anticipate Sole Source Award of $50k to M3, Tucson Contract Through Caltech…Managed by S. Radford Contract Through Caltech…Managed by S. Radford Study Content Review of Facility and Site Requirements Review of Facility and Site Requirements Site Plan Concept Design Site Plan Concept Design Facility Architectural Concept Design Facility Architectural Concept Design Initial Foundation Concepts (based on conjectures of strata) Initial Foundation Concepts (based on conjectures of strata) Utilities Concept Design (water, sewage, electricity, etc.) Utilities Concept Design (water, sewage, electricity, etc.) Access Road Layout (anticipating Cerro Negro at this point) Access Road Layout (anticipating Cerro Negro at this point) 3D CAD Renderings (incorporating CAD from others) 3D CAD Renderings (incorporating CAD from others) Cost Estimate for Facility and Site Development Cost Estimate for Facility and Site Development Critical Risk Assessment and Mitigation Concepts Critical Risk Assessment and Mitigation Concepts

6. 2.0 Enclosure Dome Documentation Prepared for Concept Design Study Anticipate Sole Source Award to AMEC Dynamic Structures Through Cornell…Award $50k…Late March Content of Study Review of Requirements Review of Requirements Conceptual Design of Dome and Mechanisms Conceptual Design of Dome and Mechanisms Evaluation of Dome Performance (Modeling & Analysis) Evaluation of Dome Performance (Modeling & Analysis) Dome Manufacturing Process Definition Dome Manufacturing Process Definition Cost Estimate Cost Estimate Critical Risk Assessment Critical Risk Assessment Will Provide 3D CAD to M3 to be Incorporated in Rendering Will Provide 3D CAD to M3 to be Incorporated in Rendering

7. Recent AMEC Studies Under TMT Funding Considers 3 Approaches Performs Analytical Trades Considers Various Attributes Calotte Chosen for Further Study and More Funding Anticipated

8. Calotte versus Others Calotte has Lowest Mass Reaction Forces to Gravity, Wind, Uplift Uniform Loading of Bogey Wheels in Azimuth System Mass of Elements in FEM: Calotte: 1300 tons Dome-Shutter:1750 tons Carousel:2150 tons

9. Modal Analysis Natural frequencies: 1 st mode shape: Calotte Chosen by TMT for Further Study

10. Design to Date

11. 3.0 Primary Mirror System Documentation Prepared for Studies of Mount Panel Manufacture Approaches Anticipate Dual Award: One CFRP & One SiC Approach Focus is on Replication Approach and Materials & Designs Which Can Support 2 meter Segments Major Contractors to Compete Composite Optics (ATK) San Diego Composite Optics (ATK) San Diego Composite Mirror Applications, Tucson Composite Mirror Applications, Tucson Xinetics, Devens, MA Xinetics, Devens, MA Fall Back Position to Existing Technologies Electro Plated Ni with Al Honeycomb Core (Media Lario) Electro Plated Ni with Al Honeycomb Core (Media Lario) Machined Aluminum Machined Aluminum ALMA Technologies, Currently Limited to 1 meter sizes ALMA Technologies, Currently Limited to 1 meter sizes Primary Mirror Truss Incorporated In Study of Mount

12. Panel Study Details Two Awards, $50k Each, Through JPL Study Tasks Requirements Review Requirements Review Panel Concept Design Panel Concept Design Panel Performance Assessment (modeling) Panel Performance Assessment (modeling) Manufacturing Process Definition Manufacturing Process Definition Critical Risk Assessment and Mitigation Concepts Critical Risk Assessment and Mitigation Concepts Cost Estimate Cost Estimate Concepts for Panel Mounting and Actuation for This Phase of Project to be Developed In House Primary Mirror Truss is Considered Part of Mount for This Phase of Project

13. SiC Opportunities 2 meter Panels Chosen Concentric Rings Chosen Best Chance for Cost Effective and Simpler Approach ~1 meter SiC Substrate ~10kg/m 2 Areal Density ~10kg/m 2 Areal Density Superior Specific Stiffness Superior Specific Stiffness Superior Thermal Performance Superior Thermal Performance Cost Effective Slip Casting/Firing/Post Processing Cost Effective Slip Casting/Firing/Post Processing Ability to Mfg to 2 meter Size Ability to Mfg to 2 meter Size ~ 1 meter

14. LLNL Nano Laminates “Uses Physical Vapor Deposition Sequential Magnetron Sputtering to Synthesize Structures Atom-by-Atom” Can Use Pragmatic Mandrels and Produce No Loss of Surface Finish or Shape “Approaches Theoretical Limits of Strength for Materials” “Macroscopic Thickness to 400 nm demonstrated” “Direct and Perfect Replication off Master Tool” “> Ten 0.5 meter diameter Mirrors Made to Date” “100 µ Thick Optical Nano-Laminate Structure Takes Less Than 72 Hours to Manufacture” “Applicable to Flat, Spherical, and Aspheric Optics” “Interface Deposited in Contact with Substrate Exactly Replicates Super Polished Substrate…0.22 nm rms”

15. Secondary and Tertiary Mirror Systems No Specific Activity to Date Secondary Mirror ~ 3.2 meters Diameter for Full Field ~ 3.2 meters Diameter for Full Field Goal is Chopping at 2 Hz.Reqt is 0.5 Hz. Goal is Chopping at 2 Hz.Reqt is 0.5 Hz. 5 DOF Alignment Required…Probably via Hexapod System 5 DOF Alignment Required…Probably via Hexapod System Tertiary Mirror ~2.5 meters X 1.8 meters Oval ~2.5 meters X 1.8 meters Oval Must Rotate to Nasmyth/Bent Cass Locations Must Rotate to Nasmyth/Bent Cass Locations May Use Tip/Tilt to Achieve Required Pointing & Tracking Precision and for Small Pointing Offsets May Use Tip/Tilt to Achieve Required Pointing & Tracking Precision and for Small Pointing Offsets Use for Jitter Correction More Demanding and Requires Fast Guiding Use for Jitter Correction More Demanding and Requires Fast Guiding Discussion on These Larger Mirrors with Contractors Upcoming…Drawings Being Made

16. 5.0 Telescope Mount Small Award to Local (Ithaca) Company for 1 st Order 3D CAD “Sketches” of Mount Spacemill SciencesUses Solidworks Spacemill SciencesUses Solidworks Helping with Layouts for Mount, Dome, PM, etc. Helping with Layouts for Mount, Dome, PM, etc. Nasmyth Approach Looks Good Model Not There Yet Required Dome Size 50m Diameter Work Will Transition to Mount Contractor on Award

17. Mount Study Documentation Prepared for Studies of Mount Anticipate Competition with Single Award of $50k Work Includes: Review of Requirements Review of Requirements Conceptual Design Conceptual Design Performance Assessment Performance Assessment Manufacturing Process Definition Manufacturing Process Definition Critical Risk Assessment and Mitigation Concepts Critical Risk Assessment and Mitigation Concepts Cost Estimate Cost Estimate Provide 3D CAD Rendering of Mount to M3 for Inclusion in Overall Rendering Competitors: Vertex RSI (Dallas), AMEC (Vancouver)

18. 6.0 Optical Assemblies Calibration Alignment System Uses Astronomical Sources to Provide Telescope Control System with Information on M1 Panel Alignment and M1/M2 Uses Astronomical Sources to Provide Telescope Control System with Information on M1 Panel Alignment and M1/M2 Current Concept Based on Shearing Interferometery Approach In Use at CSO Current Concept Based on Shearing Interferometery Approach In Use at CSO Gene Serabyn (JPL) to Study for CCAT Project Gene Serabyn (JPL) to Study for CCAT Project Uses Extended Focal Plane Array Uses Extended Focal Plane Array Analyses Must Verify Precision, Accuracy, and Noise Issues Analyses Must Verify Precision, Accuracy, and Noise Issues Calibration Maintenance System Maintains Alignment of M1 Panels and M1/M2 During Operation Maintains Alignment of M1 Panels and M1/M2 During Operation Novel Approach Uses “Optical Hexapods” Novel Approach Uses “Optical Hexapods” Proposed by Tom Cwik et al (JPL) Proposed by Tom Cwik et al (JPL) Uses Distance Measuring Lasers and M2 Retroreflectors Uses Distance Measuring Lasers and M2 Retroreflectors Will be Studied for CCAT by T. Cwik et al Will be Studied for CCAT by T. Cwik et al Fallback Position is to Use TMT-like Edge Sensors Fallback Position is to Use TMT-like Edge Sensors

19. 6.0 Optical Assemblies (cont.) Tracker/Guider System Large Deflections of Telescope Over Elevation Range Challenge Pointing Large Deflections of Telescope Over Elevation Range Challenge Pointing Concept: Use Peripheral Field at Instruments for Optical Guiders Concept: Use Peripheral Field at Instruments for Optical Guiders Many Questions: Many Questions: Statistics of Available Guide Objects Configuration of Guider Bandwidth and Need/Desire for Jitter Reduction Jamie Lloyd (Cornell) Agrees to Study for CCAT Study Jamie Lloyd (Cornell) Agrees to Study for CCAT Study Includes Strawman Guider Design Analysis of Guide Objects and Efficacy Integration with Strawman Instrument Designs

20. 7.0 Electronics Does Not Include Control System Electronics or Other Sensor Systems Does Include: Power Sources, Distribution and Protection Strategy Power Sources, Distribution and Protection Strategy Distributed Sensor Networks Distributed Sensor Networks Safety and Security Equipment e.g. Emergency Off System, Surveillance Cameras, etc. Safety and Security Equipment e.g. Emergency Off System, Surveillance Cameras, etc. Communications Network Communications Network System Specific Equipment System Specific Equipment Need to Identify Electrical Engineer to Work for CCAT Project During Study EE Will Study and Author Sections of Report on Electronics Not a Major Cost Factor or Technology Challenge

21. 8.0 Computers & Software Includes Computer and Software Architecture and Authorship for Overall Control of Observatory Controls of Major Subsystems Contracted With Them Dome, Mount, PM Actuator System, Calibration and Operational Sensors, Environmental Controls Dome, Mount, PM Actuator System, Calibration and Operational Sensors, Environmental Controls Nothing Currently Being Done…Need Someone to Work on This for the Study Sebring, Radford, Woody Like the Following: Hardware Architecture Using PC Platforms Running Linux or Windows Depending on Nodes Hardware Architecture Using PC Platforms Running Linux or Windows Depending on Nodes Communications via Fast Ethernet to All Nodes Communications via Fast Ethernet to All Nodes National Instruments LabVIEW Software Environment National Instruments LabVIEW Software Environment This Architecture is Working Well at SALT and SOAR This Architecture is Working Well at SALT and SOAR Favored by an Increasing Number of Instrumentalists Favored by an Increasing Number of Instrumentalists Compatible with Other Control, Hardware, and Software Compatible with Other Control, Hardware, and Software

24. 9.0 System Engineering Optical Design Task Joint Effort of Cornell and JPL (German Cortes & Mark Dragovan) Joint Effort of Cornell and JPL (German Cortes & Mark Dragovan) Includes Modeling Using Both Radio and Optical Raytrace Software Packages Includes Modeling Using Both Radio and Optical Raytrace Software Packages Calculates Full Range of Relevant Performance Parameters Calculates Full Range of Relevant Performance Parameters Need to “Finish” This Task Over the Next 2 Months Need to “Finish” This Task Over the Next 2 Months Ultimately Need to Include Instruments Optical Designs for End- to-End Analysis of Performance Ultimately Need to Include Instruments Optical Designs for End- to-End Analysis of Performance Systems Engineering Task Includes Error Budgets for Image Quality, Alignment, Pointing, etc. Includes Error Budgets for Image Quality, Alignment, Pointing, etc. Dave Woody (Caltech) Has Agreed to Manage This Effort Dave Woody (Caltech) Has Agreed to Manage This Effort May Include System Modeling at JPL (Mark Dragovan et al) May Include System Modeling at JPL (Mark Dragovan et al) Ongoing Analytical Tasks to Predict System Performance Ongoing Analytical Tasks to Predict System Performance

25. 10.0 Integration and Assembly Section to be Managed by CCAT Project Team (Sebring) Current Thinking All Major Subsystems to be Assembled and Tested in US Prior to Shipping All Major Subsystems to be Assembled and Tested in US Prior to Shipping Telescope Mount Testing Will Include Integration of PM Truss and Testing with Control System Telescope Mount Testing Will Include Integration of PM Truss and Testing with Control System All Major Subsystems Will Require Bolted Connections (Minimal Field Welding) and Where Possible Break Down Sufficiently for Standard Shipping Containers All Major Subsystems Will Require Bolted Connections (Minimal Field Welding) and Where Possible Break Down Sufficiently for Standard Shipping Containers Altitude Mitigation & Safety Task (Simon Radford) Considers Oxygen Enrichment Approach in Building Considers Oxygen Enrichment Approach in Building Use of Oxygen During Construction and Operation Use of Oxygen During Construction and Operation Procedures, Equipment, and Facilities to Deal with Emergencies Procedures, Equipment, and Facilities to Deal with Emergencies May Establish Standards for Assembly Tasks May Establish Standards for Assembly Tasks May Levy Requirements on Contractors May Levy Requirements on Contractors

26. 10.0 Integration & Assembly Cont. Logistics of Personnel Placement a Critical Issue Probable 3-4 year Presence Through Commissioning Probable 3-4 year Presence Through Commissioning Where Will Families Live? Where Will Families Live? How Will Transportation be Achieved? How Will Transportation be Achieved? What Facilities Required in Addition to Summit? What Facilities Required in Addition to Summit? Many Questions Will be Answered as Result of a Detailed Operations Plan Need to Formulate and Charge the Operations Committee Staffing, Logistics, Housing, Travel, etc. of Ops Personnel Staffing, Logistics, Housing, Travel, etc. of Ops Personnel Required Buildings and Capabilities Required Buildings and Capabilities On Site, Intermediate Elevations, In San Pedro, In Santiago Definition of Remote Observing Capabilities Definition of Remote Observing Capabilities Definition of Observing Modes and Methods Definition of Observing Modes and Methods

27. 11.0 Science Instrumentation Instrument Committees Have Begun Work Two Major Instruments Anticipated for 1 st Generation Wide Field Bolometer ImagerGordon Stacey (Cornell) Wide Field Bolometer ImagerGordon Stacey (Cornell) SpectrometerMatt Bradford (JPL) SpectrometerMatt Bradford (JPL) Consideration of Requirements for Heterodyne Instrumentation Being ConsideredJonas Zmuidzinas Need Projection of FPA Development to Ensure Telescope Compatibility Need to Consider Second Generation Instrumentation Analysis to Verify Efficacy of Telescope/Instrument Combinations Budget Set’s Aside $10 million Each for 1 st Generation Instruments

28. 12.0 Management & Reporting Approaches to Majority of Required Areas of Study Defined Committees, Tasks, Contractor Studies Committees, Tasks, Contractor Studies First Draft Outline of Report Generated and In Review Aids in Allocation of Principal Responsibility for Various Study Areas and Management of Tasks Aids in Allocation of Principal Responsibility for Various Study Areas and Management of Tasks Anticipate Periodic Revisions and Reallocation of Responsibilities Anticipate Periodic Revisions and Reallocation of Responsibilities Documentation for Contractor Studies Developed Competition and Award of Studies Underway at Cornell, Caltech, and JPL Competition and Award of Studies Underway at Cornell, Caltech, and JPL Additional Clarification of Tasks and PIs for Tasks Developed

29. 12.0 Management & Reporting (Plans) Meeting with TMT Scheduled for 17 Mar 05 Review Status and Plans for Each Project Review Status and Plans for Each Project Identify Common Technologies & Systems Identify Common Technologies & Systems Identify Areas of Synergy and Collaborative Development Identify Areas of Synergy and Collaborative Development Planned Near Term Meetings with Contractors Seeking Meeting with LLNL to Discuss Nanolaminates Seeking Meeting with LLNL to Discuss Nanolaminates Meeting with Goodrich and Corning to Discuss Mandrels Meeting with Goodrich and Corning to Discuss Mandrels Meeting with Xinetics to Discuss Intellectual Property and Process for M2 & M3 Meeting with Xinetics to Discuss Intellectual Property and Process for M2 & M3 Kick Off Studies and Tasks Individual Meetings with Task PIs and Contractors on Award Individual Meetings with Task PIs and Contractors on Award Identify Critical Issues Associated with Each Effort Identify Critical Issues Associated with Each Effort Develop Schedules & Milestones Develop Schedules & Milestones