Design Team Report: AO Operational Tools (aka Acquisition and Diagnostics) Christopher Neyman W. M. Keck Observatory (for the Operational tools team) Keck NGAO Team Meeting #11 November 5, 2007 Videoconference

2 Outline Introduction Acquisition PSF camera Atmospheric monitor AO calibration, diagnostics, and metrology

3 AO operational tools Acquisition: cameras to boresight science, TTFA, and LGS sources Diagnostics: –Group of task related to AO quality assurance (QA) –All seek to answer the question: Is the data good –Assumptions: temperature, humidity, cleanliness, status These functions are part of AO enclosure and bench AO non real-time software –Assumptions: AO telemetry data Part of AO real-time software Overall team plans to: –Focus on requirements and interfaces –Detailed design in subsequent phases

4 Acquisition camera Lead, Team: Chris Neyman Status: –Conceptual design of the acquisition cameras including consideration of the location and optical interface –Neyman finished sensitivity (photon) budget for the acquisition cameras –Favor IR detector for LOWFS/deployable IFU –Separate LGS acquisition Integrate with LGS WFS in expedient way To do: –Finalize acquisition processing steps (flow chart level) Need to coordinate with operations teams (David LeMignant) –Finalize optical/mechanical interfaces

5 PSF Monitor Camera Lead, Team: Mathew Britton Status: –Draft requirements –Identified preferred location for camera –First cut at sensitivity and sky coverage: no show stoppers To do: –Focus on analysis of feasibility of technique –Delay other conceptual design work –Assumption, it is a small risk to add camera to design later –More of Mathew’s hours in November

6 Atmospheric Profiler Lead, Team: Mathew Britton Status: –Draft requirements assuming current MASS/DIMM acceptable To do: –Verify expected performance is sufficient –More of Mathew’s hours in November

7 Proposed AO diagnostic systems Integrated with AO ( ) –Radiometric calibration of instrument and AO focal planes –Astrometric calibration source –Point source simulator (NGS+LGS) –Turbulence simulator –Alignment and registration aides –Metrology Instrument and AO flexures, drifts, vibrations –“Observers” for parts of AO system Example: high speed interferometer looking at first DM

8 Diagnostics, Calibration, Metrology Lead, Team: Chris Neyman Status: Documented requirements for radiometric calibration sources, AO point source simulators, and atmospheric phase screens To Do: –Outline needed accuracy from wavefront error budget –Complete interfaces with AO non RTC and RTC control systems