1. Keck Observatory in the TMT Era Keck Strategic Planning meeting September 18, 2009

2. TMT has selected 13N at Mauna Kea MK process CMP subplans need to be completed Final EIS submitted and accepted CDUA application prepared and submitted CDUP issued Legal issues resolved Schedule, with legal challenge periods included and optimistically assuming success has CDUP issued in October 2010

3. TMT Early-Light capabilities MOBI: 0.32µ - 1µ, R=1000, 3000, 8000 (0.7  slit width), 40 arcmin 2 LRIS-like with added cross-dispersed higher-R mode

4. NFIRAOS TMT AO system is designed to deliver rms wavefront error of 190nm and to pass a 2-arcminute (diameter) field, with good correction over 30-arcsecond (diameter) field. Performance is comparable to NGAO

5. 5 Instrument Spectral Resolution Science Case Near-IR DL Spectrometer & Imager (IRIS) ~4000 Assembly of galaxies at large redshift Black holes/AGN/Galactic Center Resolved stellar populations in crowded fields Astrometry Wide-field Optical Spectrometer (WFOS) 1000-5000 IGM structure and composition 2<z<6 High-quality spectra of z>1.5 galaxies suitable for measuring stellar pops, chemistry, energetics Near-field cosmology Multi-slit near-DL near-IR Spectrometer (IRMS) 2000 - 5000 Near-IR spectroscopic diagnostics of the faintest objects JWST follow-up Mid-IR Echelle Spectrometer & Imager (MIRES) 5000 - 100000 Physical structure and kinematics of protostellar envelopes Physical diagnostics of circumstellar/protoplanetary disks: where and when planets form during the accretion phase ExAO I (PFI) 50 - 300 Direct detection and spectroscopic characterization of extra-solar planets High Resolution Optical Spectrograph (HROS) 30000 - 50000 Stellar abundance studies throughout the Local Group ISM abundances/kinematics, IGM characterization to z~6 Extra-solar planets! MCAO imager (WIRC) 5 - 100 Precision astrometry Stellar populations to 10Mpc Near-IR, DL Echelle (NIRES) 5000 - 30000 Precision radial velocities of M-stars and detection of low-mass planets IGM characterizations for z>5.5 TMT First Decade Instrument/Capability Suite

6. IRIS - Infrared imaging spectrometer Grating IRIS dewar (at 77k) Common spectrograph and camera for both IFUs imager filter wheels F/15 AO Focus 2’ WFS imager IFUs IRIS is OSIRIS-like. Works at diffraction limit, multiple plate scales

7. IRMS - Infrared multislit spectrometer 0.8 - 2.5 um cryogenic multi-slit spectrometer 2.3 arcmin field of view 0.06 arcsec sampling 46 moveable slits 2.4” long Covers entire Y, J, H or K band at R = 4660

8. TMT Schedule Current first-light date with NFIRAOS, MOBIE, IRMS and IRIS is Fall 2018 This is based on a resourced schedule and some assumptions about completing the partnership and feeding funding to the project. Not likely to be delivered any earlier than this Commissioning will be carried out over irst two years (only part of the time will be available for science)

9. Keck in the TMT Era Complementary capabilities –Wider-field MOS –High-R at all wavelengths –Visible-light AO –Natural complementarity set by source brightness Feeder capabilities Complementary uses –Concentrate on larger programs –Concentrate on specialized instruments