| Size1 |
Focal Ratio2 |
Casting Date3 |
Telescope/Observatory |
| 1.8 |
1.0 |
6/17/1985 |
Vatican Advanced Technology Telescope |
| 1.2 |
1.9 |
11/11/1987 |
Smithsonian Astrophysical Observatory |
| 3.5 |
1.75 |
4/26/1988 |
Astrophysical Research Consortium |
| 3.5 |
1.75 |
12/9/1988 |
Wisconsin-Indiana-Yale-NOAO |
| 3.5 |
1.5 |
6/28/1989 |
US Air Force Starfire Optical Range |
| 6.5 |
1.25 |
4/3/1992 |
Multiple Mirror Telescope Conversion |
| 6.5 |
1.25 |
2/3/1994 |
Magellan I, Las Campanas Observatory |
| 8.4 |
1.14 |
6/10/1997 |
Large Binocular Telescope I |
| 6.5 |
1.25 |
9/15/1998 |
Magellan II, Las Campanas Observatory |
| 8.4 |
1.14 |
5/20/2000 |
Large Binocular Telescope II |
| 6.5 |
1.25 |
4/4/2002 |
Lockheed Martin Corporation |
| 8.4 |
2.14* |
7/23/2005 |
Giant Magellan Telescope I |
| 3.8 |
3.4 |
8/28/2006 |
Test Optic, Mirror Lab |
| 8.4 |
1.2 |
3/29/2007 |
Large Synoptic Survey Telescope |
| 6.5 |
1.25 |
8/26/2009 |
San Pedro Màtir Observatory |
| 1.2 |
1.9 |
9/10/2010 |
Smithsonian Astrophysical Observatory |
| 8.4 |
2.14* |
1/15/2012 |
Giant Magellan Telescope II |
| 8.4 |
2.14* |
8/25/2013 |
Giant Magellan Telescope III |
| 8.4 |
2.14* |
9/18/2015 |
Giant Magellan Telescope IV (center mirror) |
| 8.4 |
2.14* |
11/04/2017 |
Giant Magellan Telescope V |
| 8.4 |
2.14* |
03/06/2021 |
Giant Magellan Telescope VI |
| 1Meters |
2Focal length/diameter |
3Casting date |
*Off-axis segment |
