From: <Steven.Tingay_at_email.protected>
Date: Fri, 26 Aug 2011 20:47:05 +0800

Thanks Simon.

So, from the PCFS schedule, could we extract the times at which the
noise cal is fired?

On Fri, Aug 26, 2011 at 8:15 PM, Simon Ellingsen
<Simon.Ellingsen_at_utas.<!--nospam-->edu.au> wrote:
>Hi Steven,
>
>>* Can someone tell me what we should expect for the switched noise
>>source at Hobart, Ceduna and Tidbinbilla (timescales, Tcal values,
>>percentage of Tsys etc)?  I think I recall that the noise sources are
>>only fired infrequently and may be controlled by the field system
>>schedule.  Can someone describe what happens at these telescopes?
>>Does a short timescale ALC operate?
>
>For Hobart and Ceduna there is no short timescale continuous ALC.
>The system temperature is measured whenever the appropriate command
>is issued by the PCFS.  These days normally this is done as part of the
>preob procedure which runs every time there is a source change (which seems
>to give sufficient tsys measurements for most observations). The values
>are automatically extracted from the PCFS log files, converted into antab format
>(usually scaled accurately into Jy) and uploaded to the ATNF FTP site.
>The probably could/should be linked from the wiki as the system temperature
>information is for the ATNF antennas, but at the moment you have to go to the
>FTP site to get them.
>
>>
>>* I gather there are no switched noise sources and/or ALC in the ASKAP
>>or Warkworth systems?
>>
>>* Do the AuScope systems have switched noise sources and/or ALC?  If
>>so, could someone describe them, please?
>>
>>Cheers, Steven
>>
>>--
>>* * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
>>Professor Steven Tingay
>>Director, CIRA
>>Western Australia Premier's Fellow
>>
>>Street address:
>>Brodie Hall building
>>1 Turner Ave
>>Technology Park
>>Bentley 6102
>>Western Australia
>>
>>Email:  s.tingay_at_curtin.<!--nospam-->edu.au OR Steven.Tingay_at_icrar.<!--nospam-->org
>>
>>WWW: http://astronomy.curtin.edu.au OR http://www.icrar.org
>>
>>Phone: +61 (0)8 9266 3516
>>
>>Mobile: +61 (0)425 771 856
>
>Regards
>
>Simon
>--
>Simon Ellingsen : Associate Professor Physics & Astronomy, University of Tasmania
>email : Simon.Ellingsen_at_utas.<!--nospam-->edu.au
>WWW   : http://fcms.its.utas.edu.au/scieng/physics/pagedetails.asp?lpersonId=681
>Phone : 6226 7588 ;                       Area Code : +61 3 (International)
>              6226 2410 (Fax)                03 (Australia)
>
>
>
>
>
>

-- 
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
Professor Steven Tingay
Director, CIRA
Western Australia Premier's Fellow
Street address:
Brodie Hall building
1 Turner Ave
Technology Park
Bentley 6102
Western Australia
Email:  s.tingay_at_curtin.<!--nospam-->edu.au OR Steven.Tingay_at_icrar.<!--nospam-->org
WWW: http://astronomy.curtin.edu.au OR http://www.icrar.org
Phone: +61 (0)8 9266 3516
Mobile: +61 (0)425 771 856

Received on 2011-08-26 22:47:31