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Agenda (Fri., June 7)

Agenda (Fri., June 7). 8:00 AO UI Demonstration 9:00 Introductions to AO team 9:05 AOWG Chair Selection 9:15 Review Agenda (make changes?) 9:20 Review Planned & Potential AO Projects 10:30 Break 10:45 Continue Project Review 11:30 Discuss Other Project Ideas 12:00 Lunch (in lounge)

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Agenda (Fri., June 7)

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  1. Agenda (Fri., June 7) 8:00 AO UI Demonstration 9:00 Introductions to AO team 9:05 AOWG Chair Selection 9:15 Review Agenda (make changes?) 9:20 Review Planned & Potential AO Projects 10:30 Break 10:45 Continue Project Review 11:30 Discuss Other Project Ideas 12:00 Lunch (in lounge) 13:00 Decide on Discussion Topics & begin Discussions 15:00 Break 15:15 Executive Session 16:15 Addition Discussions with AO Team 17:00 End

  2. Keck AO Team AO P. Wizinowich Science Ops D. Le Mignant LGS AO Dev. A. Contos Software P. Stomski AO for Interfer. C. Neyman Tech Support T. Saloga M. Wagner S. Hartman D. Summers Laser J. Chin New hire

  3. Keck AO: Future Directions P. Wizinowich & D. Le Mignant for Keck AO Team AOWG – June 7, 2002

  4. Future Directions Performance Science Efficiency Strehl Ratio Sky Coverage Emissivity & Thruput Operations Science Capabilities Characterization & Modeling

  5. Future Directions • Strehl • Sky Coverage • Emissivity & Throughput • Operations • Science Capabilities • Performance Characterization & Modeling • Other Ideas?

  6. Set A / Set B @ 30° / Set C @ 60° NGS Error Budget Strehl Ratio 0.48 / .33 / .03 @ H Total RMS (nm) 140 / 213 / 460 Strehl Ratio 0.53 / .36 / .03 @ H Strehl Ratio 0.91 @ H AO Tilt (nrad) 23 / 36 / 77 AO System 140 / 213 / 460 Telescope 152 Science Inst. 35 Field Dep. 0 / 0 / 0 Windshake ? Measurement 114 / 128 / 224 Segment 82 Centroid Anis. 15 / 30 / 69 Fitting 63 / 123 / 285 ACS Noise 58 Sci Inst. Align. 15 Assumptions: NGS = 2000 cnts Everything on-axis Bandwidth 36 / 113 / 282 Phasing 50 Measurement 7 / 12 / 29 Calibration 30 Vibrations 100 Isokinetic Ang 0 Requirement: SR = 0.79 / .64 / .08 @ H For an infinitely bright star Internal 20 Stacking 20 Bandwidth 0 / 1 / 1

  7. A. Strehl Improvement • Interferometer: vibration reduction (FY02/03) • Telescope optical performance improvements (FY03/05) • K2 wavefront sensor image quality improvement (FY02/3) • Interferometer: K1 real-time processor upgrade to Mercury PowerPC (FY03) • K2 IR atmospheric dispersion corrector • K2 visible atmospheric dispersion corrector • Multiple wavefront sensor platescales • Gain optimization in PRC • Better reconstructors in PRC • NIRC2: alignment monitoring tool (if necessary) • K2 LGS: on-axis laser projection telescope • K2 real-time processor upgrade to Mercury PowerPC • Increase fast tip/tilt mirror stroke

  8. NGS Error Budget Strehl Ratio 0.48 / .33 / .03 @ H Total RMS (nm) 140 / 213 / 460 Strehl Ratio 0.53 / .36 / .03 @ H Strehl Ratio 0.91 @ H AO Tilt (nrad) 23 / 36 / 77 AO System 140 / 213 / 460 Telescope 152 Science Inst. 35 Field Dep. 0 / 0 / 0 Windshake ? 2 5 13 9 3 Measurement 114 / 128 / 224 Segment 82 Centroid Anis. 15 / 30 / 69 6 Fitting 63 / 123 / 285 ACS Noise 58 Sci Inst. Align. 15 10 4 8 Bandwidth 36 / 113 / 282 Phasing 50 Measurement 7 / 12 / 29 7 12 Calibration 30 Vibrations 100 Isokinetic Ang 0 1 11: LGS measure- ment error Internal 20 Stacking 20 Bandwidth 0 / 1 / 1

  9. B. Sky Coverage • K2 LGS: upgrades to AO system (FY02) • K2 LGS: laser completion (FY02/3) • K2 LGS: integration (FY03) • Geometric based subaperture mapping in PRC (FY03) • Larger subapertures • Lower noise wavefront sensor CCDs • Denominator free centroiding • Larger guide star field for wavefront sensing • K1 LGS: laser installation • K1 LGS: upgrades to AO system

  10. LGS Upgrades • Tip/tilt sensor • Low bandwidth wavefront sensor • Sodium rejection • Wavefront sensor & pupil relay tracking • Acquisition camera range • 3rd field steering mirror • Uplink tip/tilt to laser • See KAON 216 for details & schedule

  11. Laser System Completion • Diagnostics & Calibrations • Polarization; diagnostic cameras (filters & shutters); Power in the Bucket; Pointing & Centering; interfaces (pressures, power) • Operations • Startup & shutdown guis; verify alarm handlers; maintenance schedules; flexure impact; stability • Optical Alignment • Laser table; procedures • Safety • Aircraft: mosaic radar & wide field camera systems • Laser traffic control system testing

  12. C. Emissivity & Throughput • Enclosure modifications to support cleanliness & lower temperatures (FY02/3) • Interferometer: image rotator mirror coatings (FY02/3) • Interferometer: cold body in reflection off IR transmissive dichroic • Improve image rotator alignment • Measure current throughput & improve coatings

  13. D. Operations • Interferometer: wavefront controller upgrade on K1 & K2 (FY02) • Interferometer: user interface reliability fix (FY02) • Interferometer: automation (FY02/3) • AO response to rotator slews (FY02/3) • Observing Assistant & Support Astronomer training (FY02/3) • New AO operations software (FY03/4) • UPS for AO VME crates (FY02) • K2 LGS: aircraft safety systems for laser (FY02/3) • K2 LGS: space command interface (if needed)

  14. E. Science Capability • NIRC2: spectroscopy commissioning (FY02) • NIRC2: coronagraphy commissioning (FY02/3) • NIRC2: calibration lamps (FY03) • NIRC2: quicklook data reduction pipeline • K2 field steering mirror upgrade (for NIRC2 spectroscopy) (FY02) • K2 LGS: AO engineering science verification (FY03) • K2 LGS: queue scheduling • OSIRIS: design support (FY02/4) • OSIRIS: fold mirror (FY04) • OSIRIS: commissioning support (FY04/5) • OSIRIS: SHARC on K1 • Interferometer: ZnSe IR transmissive dichroics for 10 um imager (FY05) • Interferometer: field selector mirrors for imager (FY05)

  15. E. Science Capability • OHANA: fiber input test (FY03) • OHANA: fiber injection module implementation on K1&2 • Improved performance on extragalactic targets • Acquisition camera upgrade to a visible science camera • Electronic logging of science observations (FY02?) • IR wavefront sensor • Differential tracking for field steering mirrors • Next generation Keck AO CoDR • Next generation Keck AO PDR, CDR, fab, I&T & commissioning • PSF reconstruction

  16. F. Performance Characterization & Modeling • Atmospheric characterization tool (FY02) • CfAO postdoc performance modeling & characterization effort (FY03/4) • Additional AO characterization & modeling efforts

  17. Other Ideas • CfAO ExAO proposal • Development Environment • Postdocs, students, sabbaticals, … • ???

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