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Keck Observatory in the TMT Era

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

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Keck Observatory in the TMT Era

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  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 arcmin2 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. TMT First Decade Instrument/Capability Suite 5

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

  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

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