Correction for rotation of the primary beam
Posted: Wed May 17, 2017 10:17 pm
In most sources of information on the primary beam for the ATCA, it is assumed that the primary beam has rotational symmetry.
For example, http://www.atnf.csiro.au/observers/memos/d97f7b~1.pdf .
In practice, this is not quite true. This can cause a problem with sources at the edge of the primary beam having amplitude variation with time.
This there a way to correct for this within MIRIAD or CASA? This would be quite useful, especially for bright sources at the edge of the beam.
For example, http://www.atnf.csiro.au/observers/memos/d97f7b~1.pdf .
In practice, this is not quite true. This can cause a problem with sources at the edge of the primary beam having amplitude variation with time.
This there a way to correct for this within MIRIAD or CASA? This would be quite useful, especially for bright sources at the edge of the beam.