The GMT Project The Giant Magellan Telescope (GMT) Seven 8.4m Mirrors Adaptive Secondaries Edge-to-edge aperture ~ 25m Focal Ratio f/0.7 Equivalent circular aperture 21.5m Resolution equivalent 25.5m Site: Las Campanas, Chile. ALMA GMT November 13th 2009 Arizona Astronomy

GMT Site in Chile Las Campanas: clear ~ 300 days/year, very dark with excellent seeing, well established infrastructure. Arizona Astronomy November 13th 2009

GMT: Sharper Images HST resolution (~ 0.06 “ at l ~ 400 nm) Hubble Deep Field (remote galaxies) GMT with AO (resolution ~ 0.0015”) November 13th 2009 Arizona Astronomy

GMT Partners (10) Astronomy Australia Ltd The GMT Project GMT Partners (10) Astronomy Australia Ltd Australian National University Carnegie Institution Harvard University Korean Astronomy and Space Science Institute Smithsonian Institution Texas A & M University University of Arizona University of Chicago University of Texas at Austin India is considering becoming a GMT partner. November 13th 2009 Arizona Astronomy

GMT Accomplishments Primary Mirrors. First off-axis blank successfully cast. Back face finishing and front face generating completed. Generating phase complete. Surface now accurate to 12 microns rms. Polishing to start shortly New test tower designed, fabricated and installed. Large (3.8m) spherical test optic and completed test hardware installed in test tower. Initial optical measurements now being made – major milestone. So far have been using laser tracker for surface measurements. Small (1.7m – one fifth scale) prototype off-axis mirror completed; now installed at the Big Bear Solar Observatory. Working well. Prototype adaptive secondaries and Rayleigh laser guide-star systems demonstrated at MMT; next generation to be implemented at LBT. Design of GMT adaptive system design underway. November 13th 2009 Arizona Astronomy

Principal Optical Test Primary mirror surface figure measurement Transmissive hologram Spherical fold-mirror #2 0.76m dia 14.5 deg angle of incidence for center ray Fold flat (not shown) Phase shifting interferometer Fold sphere mirror 3.75m diameter, 25.5m ROC 8.3 m vertex to vertex 23.5 m vertex to vertex Distances monitored by laser tracker 3.75m fold sphere surface figure measurement GMT primary off-axis segment, 8.4m dia, 36 meter ROC “Principal Optical Test for the GMT Primary Mirror Segments” Vertex 2.54m above floor Arizona Astronomy November 13th 2009

November 13th 2009 Arizona Astronomy

Optical Test Interferogram November 13, 2009 Arizona Astronomy

Challenges November 13, 2009 Arizona Astronomy

Las Campanas at night November 13th 2009 Arizona Astronomy

LBT Status Update Telescope now functioning reliably. Prime Focus Cameras #1+2 ready for final acceptance. LUCIFER #1 completing commissioning/SDT begins. (IR imager/ spectrometer with seeing/diffraction modes) MODS #1 soon ready for Lab acceptance; commissioning spring 2010. (Optical imager/spectrometer). Adaptive Secondary #1 tested in Arcetri, now ready for Lab acceptance; shipping in December 2009. In each case unit #2 follows approximately 1 year later. LBTI (combined beam high resolution imager) ready to be installed in spring 2010. Arizona contribution. MGIO Power Line Upgrade underway. NSF-ARI proposal submitted for additional improvements. November 13, 2009 Arizona Astronomy

LSST – Primary/Tertiary Mirror Mirror Lab Update LSST – Primary/Tertiary Mirror Casting and Clean Out Complete Back Face Machining and Polishing Complete Installation of Load spreaders Complete On schedule and budget San Pedro Martir Telescope (6.5m) Casting Completed Furnace Opening November 30th Collaboration INAOE/UNAM/UCB/UA Solar Concentrator - All components demonstrated to function individually - First module integration now underway - Proposals submitted to DOE/NREL etc. November 13th 2009 Arizona Astronomy

Representative Gabrielle Giffords, President Robert Shelton and Roger Angel viewing the pre-prototype solar collector at Bear Gym. November 13th 2009 Arizona Astronomy

Goal for UA Participation is 12.5 percent The GMT Project Appropriate UA Participation Level Telescope Year Aperture UA Share Location Comments Bok 1971- 2.3 m 100% Kitt Peak, AZ All UA MMT (Old) 1978-98 4.5 m 50% Mt Hopkins, AZ with Smithsonian MMT (New) 2000- 6.5 m Magellan 2001 2 x 6.5 m 10% Las Campanas, Chile In Chile, 4 partners LBT 2006 11.8 m 25% Mt Graham, AZ 2 x 8.4 m, 4 partners GMT 2018 22 m 12.5 % Goal ~ 8-10 partners Goal for UA Participation is 12.5 percent November 13th 2009 Arizona Astronomy

November 13th 2009 Arizona Astronomy Figure 1. Rendition of the 20 kW generator prototype ……. November 13th 2009 Arizona Astronomy