Timeline of telescopes, observatories, and observing technology

Timeline of telescopes, observatories, and observing technology.

Before the Common Era (BCE)

3500s BCE

1900s BCE

1500s BCE

600s BCE

  • 11th–7th century BCE, Zhou dynasty astronomical observatory (灵台) in today's Xian, China

200s BCE

100s BCE

Common Era (CE)



















  • 2001 – First light at the Keck Interferometer. Single-baseline operations begin in the near-infrared.
  • 2001 – First light at VLTI interferometry array. Operations on the interferometer start with single-baseline near-infrared observations with the 103 m baseline.
  • 2005 – First imaging with the VLTI using the AMBER optical aperture synthesis instrument and three VLT telescopes.
  • 2005 – First light at SALT, the largest optical telescope in the Southern Hemisphere, with a primary mirror diameter of 11 meters.

Under Construction


See also


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