project update...sites: decision expected this april mko: 2016-2017: 1.5 years long contested case...

TMT Proprietary TMT.PMO.PRE.XX.XXX.RELXX 11

The Thirty-Meter-Telescope

Project Update

Science in the 2020sTucson

Feb. 2018

Christophe DumasTMT International Observatory


Historyofproject

Thirty-Meter-Telescope(TMT)=Mergingof3earlierconcepts.Currentcost~1,500M$

CELT:CaliforniaExtremelyLargeTelescope(30mdiameter).CaltechandUniv.CaliforniaVLOT:VeryLargeOpticalTelescope(20mdiameter).CanadianUniversitiesforResearchinAstronomy(ACURA)GSMT:(30mdiameter).NationalOpticalAstronomicalObservatory(NOAO)&GeminiObservatory

2003:FoundationofTMTObservatoryCorporation(Caltech,UC,ACURA)2008:NAOJjoins2009:FundingprovidedbyG.&B.MooreFoundation2014:Chinese&Indianpartnersofficiallyjoin2016:TMTInternationalObservatory

CELT

VLOT

GSMT


Historyofproject(Cont’d)

AURA is also an Associate Member of TMT on behalf of the US national community

Through a cooperative agreement with the NSF, TMT and a US-SWG are developing a model for potential US national partnership in the TMT

Organization of five TMT science forums

International Science Development Teams

Education & public outreach

More info? Talk to Mark Dickinson at NOAO and/or check

http://ast.noao.edu/system/us-tmt-liaison


SignificantfundingprovidedbytheGordonandBettyMooreFoundation

ThirtyMeterTelescopeSiteLocations

Sitecharacteristics(medianvalues,unlessstated)

MKO(USA)

ORM(Spain)

Altitudeofsite(m) 4050 2250

Fractionofyearly usabletime(%) 72 72

Seeingat60m aboveground(arcsecond) 0.50 0.55

Isoplanatic angle(arcsecond) 2.55 2.33

Atmospheric coherencetime(ms) 7.3 6.0

Precipitable WaterVapor (%oftime<2mm) 54 20

Mean nighttime temperature(oC) 2.3 7.6

Extinction(Vmag/airmass) 0.111 0.137

Grounddustconcentration(µg/m³) 0.815 1.006


Sites: Decision expected this April

MKO: 2016-2017: 1.5 years long contested caseSep. 2017: BLNR approves the Construction District Use PermitToday: Stronger and more “open” local support than in 2015Still, obstacles lay ahead:

Appeal #1: Feb. 2017: To avoid another contested case on the sublease between the UH and TMT

“Oral arguments” mid-March ‘18

Appeal #2: Oct. 2017: Appeal filed by opponents about CDUP

No date has been set yet for oral arguments

ORM:2017: Hosting Agreement MOU signed between TIO and IAC2017: Collaboration agreement signed between TIO, IAC, La Palma government & local municipality 2018: Environmental Impact Assessment (EIA) submitted to island authorities (last step before applying for a construction permit)

Environment is extremely positive towards its support of TMT:

Project receives support at all administrative and government levelsAll government offices are coordinating their actions


Current timeline

April 2018: Tentative date for a site decision by TIO Board

Q2-Q4 2018: Realistic expectation to have safe & legal mountain access granted in Hawaii and/or Spain

1st semester 2019: Start of Construction in Hawaii or Spain

2020-2022: Enclosure assemblyEnd 2023: End construction of all summit buildings

2022-2024: Telescope structure integration

2024-2027: AIV, commissioning

2028: “First-light”


The Thirty-Meter-Telescopeand its systems

Ritchey-Chrétienopticaldesign

M1:30mhyperboloidal f/1

M2:3.1mconvexhyperboloidal (AM2studiesstarted)

M3:Flat2.5mx3.5m

f/15finalfocalratio

20arcmin FoV (2.62mø)

Upto8instrumentsontwoNasmyth platforms

AOatfirst-light(NFIRAOS)

LGSF(MCAO,MOAO)


TMT systems

Ritchey-Chrétienopticaldesign

M1:30mhyperboloidal f/1

M2:3.1mconvexhyperboloidal(active)

M3:Flat2.5mx3.5m

f/15finalfocalratio

20arcmin FoV (2.62mdiameter)

Upto8instrumentsontwoNasmyth platforms

AOatfirst-light(NFIRAOS)

LGSF(MCAOS,MOAO)


Project status (systems)

All critical systems are in advanced status of design, or have already started construction

Common Software: Started construction

Enclosure, AO, M1 optics, Telescope structure, summit facilities: All in FD phase

Nearly half of all M1 blanks have already been

fabricated

IRIS (1st light instrument): Also in FD phase


TMT Enclosure is CompletingFinal Design phase


M1 Segment Polishing at IIA

The reference sphere vendor has been selected, Callaghan Innovation, New Zealand.The Crest polishing facility near Bengaluru is to be completed in early 2018 to house technology from Coherent.


OPT: Prototype Segment installedin MSIT SSAfabricatedin

IndiabyGodrej


CTR: Observatory Safety System

Working towards a unified approach across the observatory for functional safety and access control

First promulgation with Structure and Enclosure design teams

Met with Fortress twice to discuss trapped key solutions and ability to monitor keys and gates

Observatory hazard access control analysis is ongoing

Added situational awareness in control room to the scope of the Observatory Safety System preliminary design work.


Defining Capabilities in theTMT Discovery Space

AdaptiveOpticsrequired


Feasibilitystudiesfornextgenerationinstrumentswillstartnextyear

TMT (envisioned) instruments suite


AO system & IRIS in FD phase

NFIRAOS

IRIS science cryostat

IRIS cable wrap

IRIS support structure

IRIS OIWFS

IRIS PDR -1 & -2 passed successfully in Nov. 2016 and Sep. 2017FD phase will last for ~ 3years

Final design for all components, including software

AO system (NFIRAOS): RTC (real-time-controller) FDR passed in Dec. 2017Upcoming:

NFIRAOS FDR: July 2018Visible cam FDR: Sep. 2018


WFOS: Fiber vs slicer designs

17

• Slit-slicer modules at the focal plane with high-performance VPH gratings

• Factor of ~10 gain in multiplex • IFU GLAO mode opens new science

“Slicer-WFOS” “Fiber-WFOS”

Down-select planned by end of April 2018Feb 2018: WFOS team presents trade studies

Mar 2018: SAC and technical peer-reviews

Apr 2018: Down-select committee reaches final consensus/decision.


TMT Science Forum 2017White papers on future instruments

Goal of November Forum was to prepare teams to respond to Call for White Papers on TMT next generation instruments

Call released in Sep. 2017new instruments and adaptive optics systems, other technical developments

Deadline to respond March 21, 2018SAC to review instrument concepts, define priorities, and make recommendation to TMT Board

TMT Board expected to support some feasibility studies

TMT first-light currently expected to happen in 2028Instruments development need > 10 years, hence it is time to start study of instrument concepts for next-generation!


Acknowledgments

The TMT Project gratefully acknowledges the support of the TMT collaborating institutions. They are the Association of Canadian Universities for Research in Astronomy (ACURA), the California Institute of Technology, the University of California, the National Astronomical Observatory of Japan, the National Astronomical Observatories of China and their consortium partners, and the Department of Science and Technology of India and their supported institutes. This work was supported as well by the Gordon and Betty Moore Foundation, the Canada Foundation for Innovation, the Ontario Ministry of Research and Innovation, the National Research Council of Canada, the Natural Sciences and Engineering Research Council of Canada, the British Columbia Knowledge Development Fund, the Association of Universities for Research in Astronomy (AURA), the U.S. National Science Foundation and the National Institutes of Natural Sciences of Japan.

project update...sites: decision expected this april mko: 2016-2017: 1.5 years long contested case...

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