GjincBeam

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This page documents the gjincBeam function of the Python module analysisUtils.

This function calls the gjinc class to compute the effective restoring beam obtained from the casa command sd_imaging when using the GJINC gridding kernel assuming the GJINC specific parameters are left at their default values. It returns the value in arc seconds.

Usage

au.gjincBeam(frequency, pixelsize=10, diameter=12.0, samplingFactor=2.5)

   frequency: floating point number in GHz (no units)
   pixelsize: floating point number in arcseconds (no units)
   diameter: the diameter of the single dish antenna in meters (no units)
   samplingFactor: the number of sampled points per telescope FWHM 

Example

# In CASA
CASA <3>: import analysisUtils as au
au.gjincBeam(115.27)
Theoretical primary beam FWHP = 52.3039 arcsec
Expected effective restoring beam = 55.6189 arcsec
  Out[3]: 55.61890766200338