ATCA Millimetre Baseline Corrections
For various reasons, including atmosphere and wrap dependent phase terms, the standard baseline solution determined at 6cm is sometimes not optimal for 3mm, 7mm and 15mm. Unless you can self-calibrate on your source, you will find phase errors resulting from use of the default (6cm) antenna positions, which are especially severe at 3mm. This page lists updates to the baseline solution produced using mm baseline solutions. Lately we've been doing a mm baseline solution straight after the 6cm one, so we are usually able to produce a correction file. This is not usually done though, unless specifically requested. If you'd like to have the mm correction file for a specific configuration, please email Narrabri staff with your request.
Click on the name of the array configuration to see the recommended baseline correction, which can be applied in MIRIAD using atfix dantpos=@file or uvedit dantpos=@file, after saving the link as a text file.
2020
27-AUG-2020, 750B2019
1-MAY-2019, 1.5B17-JAN-2019, H75
2015
20-JUL-2015, H752014
15-SEP-2014, H2147-JUL-2014, H75
23-JUN-2014, H168
13-MAR-2014, H168
2013
11-SEP-2013, H21413-AUG-2013, H168
13-MAR-2013, H214
2012
9-SEP-2012, H21419-JUL-2012, H75
2011
15-SEP-2011, H7517-JUL-2011, EW352
4-JUL-2011, H214
5-MAY-2011, 1.5B
2010
5-OCT-2010, H21414-SEP-2010, H75
4-MAY-2010, H214
2008
9-JUL-2008, H214 (Thanks again to Maxim for the data reduction on this and other 2008 dantpos files.)8-JUN-2008, 1.5B
19-MAY-2008, EW352
19-MAR-2008, H168
The weather on the evening of 3rd January was poor, and the baseline
solution generated for the 6A array config was not good. Therefore,
another cm baseline solution was generated on the 15th January. To
use this solution, apply the data in a manner similar to that recommended
for the mm solutions. An attempt to generate a mm solution will be made
on either 18th or 20th January.
15-JAN-2008, 6A (better cm solution for 3rd - 14th January)
2007
13-AUG-2007, H168 (Thanks to Maxim Voronkov for the reduction on this.)2006
08-AUG-2006, SPLIT26-APR-2006, H214C
2005
12-OCT-2005, H168C04-OCT-2005, EW214
15-AUG-2005, H214C
29-JUN-2005, H75C
04-MAY-2005, H168D
2004
15-DEC-2004, 1.5D15-OCT-2004, H214C
29-SEP-2004, H214C
2003
23-SEP-2003, EW352B09-SEP-2003, 750F
06-AUG-2003, EW367B
15-JUL-2003, 6D
30-JUN-2003, EW214
11-JUN-2003, 750C
26-MAY-2003, H75B
08-MAR-2003, EW352
2002
14-OCT-2002, 750A01-OCT-2002, H168B
18-SEP-2002, EW367B
12-AUG-2002, H75B
29-JUL-2002, 750F
19-JUN-2002, EW214B
Original: Mark Wieringa (13-Jul-2006)
Updated: Robin Wark (7-Aug-2008)