2013 Survey Science Group Workshop, 13-16 Feb. 2013 High-1 Resort
Contents
I.
GMT Project – A Brief Introduction
II. Current Status
III. Plan 2013
2013 Survey Science Group Workshop, 13-16 Feb. 2013 High-1 Resort
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2013 Survey Science Group Workshop, 13-16 Feb. 2013 High-1 Resort
GMT Overview

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Project period : 2003 ~ 2019(E) ~ 2022(F)
Construction cost : $791M (2010)
Partners : 10 ( USA, AUS, ROK)
Funding :
 Partner Share Goals : 85%
 Commitments & Received : 45%
 Room for 15% yet waiting for 1-2 partners
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GMT Partner Institutions
Carnegie
Harvard
SAO
KASI
U. Arizona
Chicago
U. Texas Austin
Texas A&M
ANU
Campanas
AAL
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GMT - Features
Features
 Ground-based 25 m
telescope operating at
near UV, visible & IR
wavelengths
 Gregorian optical system
with segmented primary &
secondary mirrors
 Alt-azimuth mount
 Active & adaptive optics
operation
 Natural seeing and AO
science instruments
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Optical Concept
Seven 8.4m Primary Mirror Segments
Primary mirror: f/0.7
386 m2
Secondary mirror segments – 1.05m
Conjugated 1:1 with primary segments
Final Gregorian focus: f/8.3
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Secondar Mirrors – ASM & FSM
• Seven 1.1 m M2 segments
ASM
• Individual six DOF positioning mechanisms
• Two interchangeable f/8 M2 assemblies
• Adaptive Secondary Mirror (ASM)
• Fast-steering Secondary Mirror (FSM)
• Exchanged using the Enclosure crane
FSM
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Development Phases
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GMT Master Plan
GMT Summary Schedule & Critical Path
FY2011
FY2012
FY2013
FY2014
FY2015
FY2016
FY2017
FY2018
FY2019
FY2020
FY2021
FY2022
FY2023
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
Status thru Aug 23, 2012 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q1 Q2
PDR
Construction
Approval
Facilities
Available
GMT 1
Enclosure
Complete
GMT 2
Project
Close-out
GMT 3
GMT 4
GMT 5
GMT 6
GMT 7
Mirror Segment
PDR
CDR
TF= 63
AIT Comp
FAB Comp
Coating Chamber
PDR
Primary Mirror Supports
& Ventilation
Test Cell
CDR
FAB Comp
Coat & Install
(4 Segments)
Telescope
Cell + dummy
Commission (1-4)
mirror AIT
TF= 316
Install GMT 6/7
Final
Commissioning
W/Adaptive Optics
On-Site
PDR
CDR
FAB Comp
Test Assy
TF= 38
Telescope Structure
CDR
PDR
Hydrostatic Bearing
PDR
CDR
FAB Comp
FAB Comp
Main Drives
PDR
Fast Steering Mirrors
Telescope
Installation
TF= 343
Instrument Commissioning
TF= 356
AO Installation
CDR
FAB Comp
Construction
Docs Comp
Award
PDR
Site Leveling
PDR
Comp
TF= 41
Construction
Comp
Construction
Docs Comp
PDR
TF= 51
Construction
Comp
FAB Comp
Enclosure
Facilities
ASM
Delivered
CDR
ASM's Integration &
Calibrated Perf Validation
Adaptive Secondary Mirror
TF= 177
PDR
FAB Comp
CDR
TF= 901
Critical Path #1
Phasing System
PDR
CDR
FAB Comp
TF= 805
Critical Path #2
Laser Guide Star Facility
CoDR
Contract Award
PDR
Fab Comp
CDR
#1
Instrumentation
#2
#3
TF= 0
TF= 89
CoDR
CoDR
Contract Award
PDR
Contract Award
Fab Comp
CDR
PDR
CDR
CP #1 to Initial
Commisioning
TF= 171
TF= 603
CP #2 to Initial
Commissioning
Fab Comp
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Current Status
(at the end of 2012)
2013 Survey Science Group Workshop, 13-16 Feb. 2013 High-1 Resort
Achievements
 Science Case Updated
 Science Requirement Document completed in Feb. 2013
 Completion of the first primary segment
 Setting up of pipeline fabrication plan
 Site Preparation at Cerro Campanas
 Selection of 1st Generation Instruments
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GMT Science Book
The objective of the GMT Project is
to design, build and operate a nextgeneration 25 meter optical/infrared
telescope to conduct forefront
astronomical research.
Science Goals
Themes

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





From Stars to Planets
Exoplanets
Stellar Populations
Galaxy Assembly & Evolution
Cosmology and Fundamental Physics
First Light & Reionization
Transient Phenomena
Synergies with other Facilities
3-4 key science questions in each area
125 pages total
www.gmto.org
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Document Tree and Flow-Down
Science Case
✓
✓
✓
✓
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Science Requirements Document
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Science Requirements Document
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Achievements
 Science Case Updated
 Science Requirement Document completed in Feb. 2013
 Completion of the first primary segment
 Setting up of pipeline fabrication plan
 Site Preparation at Cerro Campanas
 Selection of 1st Generation Instruments
2013 Survey Science Group Workshop, 13-16 Feb. 2013 High-1 Resort
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GMT #1
 M1 development program: 2004
 Parameters:
 8.4 m diameter off-axis segment
 36 m radius of curvature
 15 mm aspheric departure
 New polishing techniques
 Metrology
 New test tower at SOML
 Principal test: full aperture interferometer
 Verification tests:
 Laser tracker Plus
 Scanning Pentaprism Test
GMT pipeline:
Capacity ~ 4 mirrors
Cadence: ~12-14 mon.
 SCOTS test (small scale)
2013 Survey Science Group Workshop, 13-16 Feb. 2013 High-1 Resort
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8.4m Offf-Axis Primary
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Primary Mirror Segment Production
Off-axis primary mirror
segments
Segment
Status
1
Completed
(2012)
2
Cast, core clean-out
(Backside processing in
Feb. 2013)
3
Casting in Aug. 24, 2013
4
Glass purchased in 2012
GMT2 lift-off at SOML
June 2012
GMT in Full Primary Mirror Production Mode
2013 Survey Science Group Workshop, 13-16 Feb. 2013 High-1 Resort
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Achievements
 Science Case Updated
 Science Requirement Document completed in Feb. 2013
 Completion of the first primary segment
 Setting up of pipeline fabrication plan
 Site Preparation at Cerro Campanas
 Selection of 1st Generation Instruments
2013 Survey Science Group Workshop, 13-16 Feb. 2013 High-1 Resort
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Cerro Campanas Site
Manquis Ridge (2308 m)
(DuPont 100” telescope)
Manqui Pk. (2450 m)
(Magellan 6.5m telescopes)
Alcaino Pk. (2410 m)
GMT Site
Campanas Pk. (2551 m)
Pan American Hwy (Route 5)
Pump station
La Serena 160 km
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Preparation for the Site
Site development timeline
• Clearing:
Mar-Aug 2012
• Geotechnical testing:
2012-2013
• Civil works:
2014-2015
• Facility construction:
2015-2017
• Enclosure installation:
2016-2017
First blast (3/23/12)
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Before & After
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When Completed
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Achievements
 Science Case Updated
 Science Requirement Document completed in Feb. 2013
 Completion of the first primary segment
 Setting up of pipeline fabrication plan
 Site Preparation at Cerro Campanas
 Selection of 1st Generation Instruments
2013 Survey Science Group Workshop, 13-16 Feb. 2013 High-1 Resort
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Gregorian Instruments Rotator
Folded Ports
•
•
•
•
~Three Science Instruments
GLAO Assembly
Guider Assembly
Tertiary Mirror Assembly
Direct Gregorian Focus
• Four Science Instrument bays
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First Generation Instruments
Plus MANIFEST !!
Name
Function
Remark
GMACS
Wide field multi-object optical spectrograph
Non AO
G-CLEF
High dispersion, high stability optical spectrograph
Non AO
GMTNIRS
High-Resolution NIR/MIR spectrograph
AO
GMTIFS
NIR Integral-Field spectrograph
AO
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2013 Survey Science Group Workshop, 13-16 Feb. 2013 High-1 Resort
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Instruments Specifications
Instrument
Function
λ Range,
μm
Resolution
Field of View
Loc
0.36 – 1.0
1500 – 4000,
10,000
40 – 80 arcmin2
DG
Optical Multi-Object
Spectrometer
Near-IR Multi-Object
Spectrometer
Optical High Resolution
Spectrometer
Near-IR AO-fed High
Resolution Spectrometer
Mid-IR AO-fed Imager and
Spectrometer
0.9 – 2.5
2700 – 5000
42 arcmin2
DG
0.35 – 0.95
20 – 100K
7 x 1” fibers
GIS
1.2 – 5.0
50 – 100K
Single Object
FP
1.5 – 14
300
0.25 arcmin2
FP
GMTIFS*
NIR AO-fed IFU / Imager
0.9 – 2.5
4000 – 10,000
10 / 400 arcsec2
FP
MANIFEST**
Facility Robotic Fiber Feed
0.36 – 1.0
300 arcmin2
DG
GMACS *
NIRMOS
G-CLEF*
GMTNIRS*
TIGER
2013 Survey Science Group Workshop, 13-16 Feb. 2013 High-1 Resort
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Plan 2013
2013 Survey Science Group Workshop, 13-16 Feb. 2013 High-1 Resort
GMT Summary Schedule & Critical Path
FY2011
FY2012
FY2013
FY2014
FY2015
FY2016
FY2017
FY2018
FY2019
FY2020
FY2021
FY2022
FY2023
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
Status thru Aug 23, 2012 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q1 Q2
PDR
Construction
Approval
Facilities
Available
GMT 1
Enclosure
Complete
GMT 2
Project
Close-out
GMT 3
GMT 4
GMT 5
GMT 6
GMT 7
Mirror Segment
PDR
CDR
TF= 63
AIT Comp
FAB Comp
Coating Chamber
PDR
Primary Mirror Supports
& Ventilation
Test Cell
CDR
FAB Comp
Coat & Install
(4 Segments)
Telescope
Cell + dummy
Commission (1-4)
mirror AIT
TF= 316
Install GMT 6/7
Final
Commissioning
W/Adaptive Optics
On-Site
PDR
CDR
FAB Comp
Test Assy
TF= 38
Telescope Structure
CDR
PDR
Hydrostatic Bearing
PDR
CDR
FAB Comp
FAB Comp
Main Drives
PDR
Fast Steering Mirrors
Telescope
Installation
TF= 343
Instrument Commissioning
TF= 356
AO Installation
CDR
FAB Comp
Construction
Docs Comp
Award
PDR
Site Leveling
PDR
Comp
TF= 41
Construction
Comp
Construction
Docs Comp
PDR
TF= 51
Construction
Comp
FAB Comp
Enclosure
Facilities
ASM
Delivered
CDR
ASM's Integration &
Calibrated Perf Validation
Adaptive Secondary Mirror
TF= 177
PDR
FAB Comp
CDR
TF= 901
Critical Path #1
Phasing System
PDR
CDR
FAB Comp
TF= 805
Critical Path #2
Laser Guide Star Facility
CoDR
Contract Award
PDR
Fab Comp
CDR
#1
Instrumentation
#2
#3
TF= 0
TF= 89
CoDR
CoDR
Contract Award
PDR
Contract Award
Fab Comp
CDR
PDR
CDR
CP #1 to Initial
Commisioning
TF= 171
TF= 603
CP #2 to Initial
Commissioning
Fab Comp
2013 Survey Science Group Workshop, 13-16 Feb. 2013 High-1 Resort
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GMT 2013 Plan
 Staged Construction Plan Setup
 Stage 1 (Early Science) : 4 Primaries, FSM, NS-instruments
 Stage 2 (Full Commission) : 7 Primaries, ASM, AO-instruments
 Preliminary Design Review Meetings
 Sub-system PDR : ~ August
 GMT System PDR : Sep. ~ Oct.
 Cost estimation (capital & operation) : March
 Cost for stage 1 construction
 Total construction
 Adjustment of project schedule according to cost estimation
 Fix contribution plans of partners by the end of 2013
 Currently 100% committed partners : Korea (10%), Carnegie (10%),
Australia(10%), Chicago (5%)
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GMT 2013 Plan
 Meetings
 GMTO Board Retreat : Aug. 23rd. (Tucson)
 GMT #3 Casting Event : Aug. 24th. (Tucson)
 GMTIFS Science Conference : Mar. 12th. – 13th. (Pasadena)
 Cosmology Conference : Jun. 10th – 12th. (Chicago)
 GMT Enclosure & Facilities PDR : Jan. 16th. – 18th. (Pasadena)
 AO PDR : Feb. ?
 Telescope PDR : Aug. ?
 System PDR : Sep. ~ Oct.
2013 Survey Science Group Workshop, 13-16 Feb. 2013 High-1 Resort
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2013 Survey Science Group Workshop, 13-16 Feb. 2013 High-1 Resort