Timeline of Telescopes, Observatories, and Observing Technology - Common Era (A.D.) - 1900s - 1990s

1990s

• 1990 - Hubble 2.4m space Telescope launched, mirror found to be flawed
• 1991 - Compton Gamma Ray Observatory satellite
• 1993 - Keck 10-meter optical/infrared reflecting telescope begins operation, located at Mauna Kea, Hawaii
• 1993 - Very Long Baseline Array of 10 dishes
• 1995 - Cambridge Optical Aperture Synthesis Telescope (COAST) -- the first very high resolution optical astronomical images (from aperture synthesis observations)
• 1995 - Giant Metrewave Radio Telescope of thirty 45 m dishes at Pune
• 1996 - Keck 2 10-meter optical/infrared reflecting telescope begins operation, located at Mauna Kea, Hawaii
• 1997 - The Japanese HALCA satellite begins operations, producing first VLBI observations from space, 25,000 km maximum baseline
• 1998 - First light at VLT1, the 8.2 m ESO telescope