Feed Polarisation

The RPFITS files also do not contain any information as to the feed polarisation. ASAP will set a default based on the antenna, but this will often be wrong the data has been read, the default can be changed using the set_feedtype function with an argument of 'linear' or 'circular'.

E.g:

  ASAP>scans = scantable('2004-11-23_1841-P484.rpf')
  ASAP>scans.set_feedtype('circular')