SSO Exploratory display

Day Tours at Siding Spring Observatory

Tours at SSO

In 1974 The Anglo-Australian Telescope was opened by HRH Prince Charles as Australia’s National Astronomical Facility. From first light to this day, the largest optical telescope in Australia has been a world-leading facility discovering exoplanets, supernovae and galaxies. In this 90 minutes walking tour of Australia’s largest optical telescope, your guide will share the history of this site and share some of the mysteries of our universe it has helped unlock.


  • Walking tour led by working astronomers, technicians and engineers
  • Behind the scenes entry into the Anglo-Australian Telescope
  • History and overview of Siding Spring Mountain
  • A Range of Activities

    There is much to see and do at Siding Spring Observatory, how much is up to you.

    • Please note that currently the Site is closed to ALL visitors - to gain access please book a tour above
    • Enjoy a great coffee, lunch or a snack at the café and browse the wonderful variety of souvenirs and gifts available.
    • Visit the Exploratory which houses an informative and educational astronomy exhibition with hands on activities, augmented reality and multimedia presentations for the whole family (Entry fees apply).
    • Behind the Exploratory is the iconic Anglo Australian Telescope (AAT), Australia's largest optical telescope. The AAT is an impressive six storeys high and holds a 16 tonne ceramic glass mirror that is 3.9 metres in diameter. Inside this massive 300 tonne dome is the Visitors Viewing Gallery which is open to the public and free of charge. From the gallery you can see the telescope and read about its history and the discoveries it has made.
    • At the AAT Viewing Gallery entrance is a lookout which over looks the iconic Warrumbungle National Park. Take a moment to view the spectacular natural beauty of the landscape surrounding Siding Spring Observatory.