12
Update on the Giant Magellan Telescope Project 1 Sarah Brough (UNSW)
Update on the Giant Magellan Telescope Project
1
Sarah Brough (UNSW)
2
Extremely large telescopes!
The GMT partners: 12 institutions, 5 nations
The GMT partners: 12 institutions
Korea
Sao Paulo, Brazil
Texas A&M
Arizona
GMT site – Las Campanas Observatory
LSST
GMT
GMT is 1º north of LSST and at same longitude
GMT is 6º south of ALMA
ALMA
6° N
GMT will operate in Chile under agreement with the University of Chile
Agreement recognized by Chilean Foreign Ministry
Chilean astronomers get 10% of the observing time
GMT on Las Campanas site
6
Warehouse / M1 Factory /M2 Metrology
Summit Utility Building
Summit Support Building
Enclosure
¡ Aplanatic Gregorian design§ Wide FOV: 10 arcmin as-is
and 20 arcmin with corrector
¡ Optical + infrared (0.3–25µm)¡ 25-metre diameter aperture¡ Conjugated primary and
secondary segments § Enables adaptive secondary
mirrors for wavefront correction
¡ Fast beam: f/8.2 (f/0.7 M1)§ Compact structure: cost
effective, high stiffness§ Enables instruments with
wide field of view
GMT optical layout
GMT primary mirrors - in production
8
Polishing complete
Front surface polishing
Ready for front surface
generating
Rear surface polishing
Cast in Nov 2017
Glass on hand
Glass on order1
2
3
4
5
6
7
5.2m
G-CLEF20,000<R<100,000echelle
GMACSvisiblewide-fieldMOS
GMTIFSAO-fedIFUspectrographandimagerGMTNIRS
AO-fed1-5micronechelle
GMT first-generation science instruments
MANIFESTfacilityfibre system
GMT instrument configuration
10
GMT construction schedule
Site Development
Enclosure Installation
Telescope Installation
AO systemInstallation
M1 Segment Installation
InstrumentsInstallation
Mount Contract
Start
EnclosureConcrete
M1 Cell Testing
Mount Factory
Acceptance
Mount Site Acceptance
Engineering First Light
G-C
LEF
Com
Cam
GM
ACS
GM
TIFS
GM
TNIR
S
MAN
IFES
T
11
¡ September 13–15, 2018¡ Honolulu, Hawaii¡ Deadline for contributed talks:
July 2, 2018¡ No conference fee!¡ http://www.gmtconference.org
GMT Community Science Meeting
