1. Australia Telescope Users Committee Technologies Report – October 2011
Graeme Carrad
Theme Leader – Technologies for Radio Astronomy
CSIRO Astronomy and Space Science
25 October 2011

2. Compact Array Broadband Backend
Status
64MHz zoom mode with all 16 zooms available has an estimated delivery date of year end 2011.
Wilson handover
Leave
Tim Bateman will transfer from ASKAP to CABB and will concentrate on problems that contribute to operational bugs and unreliability.
Warwick Wilson back in the country and working in with Bob Sault.
Lessons learned from implementing 1 MHz and 64 MHz allow faster delivery of the remaining two modes
…or are CABB’s bugs to be fixed first? – feedback needed.
CSIRO Astronomy and Space Science - Technologies for Radio Astronomy

3. 20/13 and 6/3 cm Upgrade Project
4 – 12GHz Receiver Upgrade
Australian Astronomy Limited (AAL) funding commenced in July Scheduled for completion in June 2013.
Two 4 – 12GHz LNAs have been fabricated and incorporated into a proof of concept receiver. Amplifier noise temperature ~7.5K. Receiver noise temperature ~9K
The receiver is to be installed and tested on a Compact Array antenna in the last week of November. (week starting 28th)
CSIRO Astronomy and Space Science - Technologies for Radio Astronomy

4. 20/13 and 6/3 cm Upgrade Project (2)
4 – 12GHz Receiver Upgrade
Measurements of the existing feed and OMT indicate they do not cover the full band.
A new OMT has been fabricated and performs well
CSIRO Astronomy and Space Science - Technologies for Radio Astronomy

5. 20/13 and 6/3 cm Upgrade Project (3)
CSIRO Astronomy and Space Science - Technologies for Radio Astronomy

6. 20/13 and 6/3 cm Upgrade Project (4)
CSIRO Astronomy and Space Science - Technologies for Radio Astronomy

7. 20/13 and 6/3 cm Upgrade Project (5)
We will look at options for the feed but must ascertain if resources are available before proceeding to outfit the array
ICT engaged to conduct a study for a feed design that achieves the desired bandwidth but constrained to the same feed throat dimension as the current C/X feed.
Any loss of science above 11 GHz please communicate to Project Scientist Naomi McClure Griffiths.
CSIRO Astronomy and Space Science - Technologies for Radio Astronomy

8. Other activities
Talks with FAST project and JBCA regarding a design study for a multibeam now at contract preparation stage.
CSIRO Astronomy and Space Science - Technologies for Radio Astronomy

9. Thank you CSIRO Astronomy and Space Science Graeme Carrad
Theme Leader – Technologies for Radio Astronomy
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