40 Inch (1.02 meters) Telescope for Siding Spring, Australia

Don Winans, Boller and Chivens Telescope Assembly Supervisor in L & F Industries’ high bay assembly building.
Future 36″, 40″, and 48″ telescopes were assembled at South Pasadena plant.

In the early 1960s, the Australian National University established a new astronomical site at Siding Spring in central New South Wales, partly in the expectation that it would provide somewhat clearer skies than those at Mount Stromlo, and partly to escape the increasing light pollution of the growing Canberra. The selection of Siding Spring followed an extensive site-testing programmer organized by the then Director, Bart Bok. The new site was instrumented with three reflectors of modest size, all made by Boller & Chivens. The 40-inch is the largest of the three. The other two being a 24-inch and a 16-inch. It has proved a useful instrument especially for photometric and imaging work.

Image by Bryn Jones http://www.maths.qmul.ac.uk/~jbj/obspics/sidingsp/mssso_ss.html

For more information about this telescope, visit the ANU Research School of Astronomy.

4 Responses to 40 Inch (1.02 meters) Telescope for Siding Spring, Australia
  1. Chris McCowage

    You may be interested to know that this telescope has been refurbished and relocated to the private Milroy Observatory near Coonabarabran. See

    • admin

      Thank you so much for this information. Don, the former employee of Boller and Chivens who started this site, said that was his first big installation job. Thank you, too, for the link to the current site.

  2. Philip Corneille - FRAS

    Indeed I checked out the telescope, which was moved from SSO in 2009 by the team of Hank Sato, Peter Mack and David Baker. Operational at Milroy observatory since April 2012 and used in 2013 to observe the passage of Near Earth Asteroid 2012 DA14…

  3. Philip Corneille - FRAS

    Any idea what the total weight is for this setup ( weight of the Optical Tube Assembly + weight equatorial cross-axis mount ). It looks like the telescope swa first light in Oktober 1964 at Siding Spring and April 2012 at Milroy Observatory.