Search found 17 matches
- Tue Jan 15, 2013 12:04 am
- Forum: Calibration
- Topic: Self-calibration of CABB data
- Replies: 7
- Views: 24721
Re: Self-calibration of CABB data
Hi Nick and Mark, I'm also interested in self-calibrating my 16 cm data, and based on what I know about the various miriad tasks that could be used for this goal I come to the conclusion that at the moment one can only uses divide-and-conquer in self calibration. I'll explain how I come to this conc...
- Tue Jan 24, 2012 7:25 pm
- Forum: Information
- Topic: Querying ATOA for 16 cm CABB data
- Replies: 1
- Views: 43587
Querying ATOA for 16 cm CABB data
-> select band name = 10/13 cm in the ATOA. My guess is that the ATOA checks the centre frequency of the observations, which is 2100 MHz for observations in the 16 cm band. This frequency falls inside the specified range for the old 10/13 cm band, so that you need to select the 10/13 cm band when yo...
- Fri Jun 10, 2011 2:59 pm
- Forum: MIRIAD
- Topic: Possible problem with plotting polarizations in uvspec?
- Replies: 2
- Views: 34793
Re: Possible problem with plotting polarizations in uvspec?
Hi Mark, Thanks for your answer. I know about the parallactic angle effects in uvplt, I was now looking into how uvspec might be used to identify bad data (in particular bandpass problems, so I was looking at XX/YY/XY/YX instead of the Stokes parameters, where such problems are more difficult to tra...
- Thu Jun 09, 2011 5:07 pm
- Forum: MIRIAD
- Topic: Possible problem with plotting polarizations in uvspec?
- Replies: 2
- Views: 34793
Possible problem with plotting polarizations in uvspec?
Hi, I'm using uvspec to plot Stokes XY and YX, and I noticed that Stokes U is very different from what I would expect based on XY and YX, i.e. U = 1/2 (XY + YX). I've included a screenshot of the uvspec window here: 0201-440_Stokes.tiff I'm plotting only the real part of the visibilities, but this c...
- Mon May 30, 2011 4:20 pm
- Forum: MIRIAD
- Topic: gpnorm gives fatal error when bandpass tables are present
- Replies: 10
- Views: 37882
Re: gpnorm gives fatal error when bandpass tables are presen
Thanks - I think I identified the problem on my side. (I was running my cal. pipeline in a terminal window that still used the old version of miriad). Now I get the familiar ### Informational: Bandpass tables present ### Fatal Error: GPNORM does not work correctly in this case back (a blessing and a...
- Mon May 30, 2011 1:27 pm
- Forum: MIRIAD
- Topic: gpnorm gives fatal error when bandpass tables are present
- Replies: 10
- Views: 37882
Re: gpnorm gives fatal error when bandpass tables are presen
Hi,
I downloaded the latest version of miriad on the 30th of May 2011, and I saw that it uses the old version of gpnorm, dating back to '97. Have there been new developments with the more recent version from the 28th of Sept. 2009?
cheers,
Dominic
I downloaded the latest version of miriad on the 30th of May 2011, and I saw that it uses the old version of gpnorm, dating back to '97. Have there been new developments with the more recent version from the 28th of Sept. 2009?
cheers,
Dominic
- Mon May 30, 2011 12:02 pm
- Forum: Information
- Topic: mfcal bug fix, redo reduction
- Replies: 4
- Views: 380082
Re: mfcal bug fix, redo reduction
Thanks guys.
Dominic
Dominic
- Sat May 28, 2011 3:41 pm
- Forum: Information
- Topic: mfcal bug fix, redo reduction
- Replies: 4
- Views: 380082
Re: mfcal bug fix, redo reduction
Hi Jamie, I've downloaded the latest miriad binary distribution for Mac OS X on Sat. the 28th of May, but the mfcal it contains is from the 17th of Dec '09. The ftp site from which I downloaded the miriad binary says that the binary was last modified on the 26th of May; will the miriad distribution ...
- Tue Jan 25, 2011 1:52 pm
- Forum: MIRIAD
- Topic: problems with running gpcal on CABB data at 16 cm
- Replies: 1
- Views: 14265
problems with running gpcal on CABB data at 16 cm
Hi,
I've heard that we still need to split up the wide-bandwidth CABB data at 16cm for polarization calibration, so that gpcal can run its course. Is this correct, and if so, could you explain in a few lines why this is?
cheers,
Dominic
I've heard that we still need to split up the wide-bandwidth CABB data at 16cm for polarization calibration, so that gpcal can run its course. Is this correct, and if so, could you explain in a few lines why this is?
cheers,
Dominic
- Tue Nov 30, 2010 4:33 pm
- Forum: Information
- Topic: Information in the ATCA user guides
- Replies: 0
- Views: 44411
Information in the ATCA user guides
Hi, I saw that the user guides on http://www.atnf.csiro.au/observers/docs/ca_obs_guide/ca_obs_guide.html" onclick="window.open(this.href);return false; and http://www.narrabri.atnf.csiro.au/observing/users_guide/users_guide.html" onclick="window.open(this.href);return false; have...