Call for Proposals – Shared Time on the AAT (Semester 2023A)

The Anglo Australian Telescope at Siding Springs Observatory. Photo: Ángel R. López-Sánchez.

The Anglo-Australian Telescope (AAT) has issued a Call for Proposals of Shared Time for Semester 2023A. This call closes on 17 October 2022 at 17:00 Australian Eastern Daylight Time (UTC + 11 hrs).

The Call for Proposals for the AAT has changed. Please read the below instructions carefully, and email any questions to [email protected]. See below, or visit the AAT website for more information.


Only researchers affiliated with ANU, UNSW, Swinburne, Sydney University, Macquarie University, University of Queensland, University of Melbourne, University of Southern Queensland, Monash University, University of Tasmania, and University of Western Sydney can apply for Shared Time on the AAT during Semester 2023A. 

Proposals will be considered for Shared Time if the number of shared-time nights requested by the proposal does not exceed the sum of the “night contribution numbers” for each institution listed on that proposal. For semester 2023A, the night contribution numbers are:


 Night Contribution Number

 Australian National University


 Macquarie University


 Melbourne University


 Monash University


 Swinburne University


 Sydney University


 University of New South Wales


 University of Queensland


 University of Southern Queensland


 University of Tasmania


 University of Western Sydney


Night Availability

There are up to 19 dark nights, 12 grey nights, and 22 bright nights available for shared-time proposals.

Instrument Availability

Available AAT instruments include: 2dF+AAOmega, 2dF+HERMES, Hector, KOALA and Veloce.  

It is anticipated that Hector will be provisionally accepted at the end of 2022 and will be offered on a shared-risk basis until it reaches full acceptance.

Veloce will undergo a major upgrade with the installation of the Veloce Azzurro and Verde arms in 2023A. It will be offered in shared-risk mode in June and July 2023, contingent on successful commissioning. It is unavailable from February through to May. See the Veloce pages for details on the new arms and performance.

AAOmega will be unavailable from mid-March to mid-April. The LN2 cans of the cameras are being replaced.

Additional instrumentation status information and updates are available on the AAT instrumentation website.

New shared-time access model

All shared time applicants are encouraged to check the ATAC Policies and Procedures, latest Instrumentation Status for the AAT and recent Policy Announcements.

Proposal preparation guidelines

Lens proposal submission system

Shared time proposals must be submitted with the AAT’s online application system Lens. This system is a user account based system, which allows for improved security and better tracking of past and current proposals. There is a FAQ available for Lens online, or available via the FAQ tab in Lens itself. Lens system has recently been transitioned into Data Central. Any issues or bugs encountered by proposers should be reported to Simon O’Toole.

Please visit the AAT website for more information.

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